Add Alpine Linux
This commit is contained in:
hwdsl2
parent
e2a9c4a0c3
commit
3c557c7f22
@ -67,14 +67,19 @@ check_os() {
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;;
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[Aa]lpine)
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os_type=alpine
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[ "$in_container" != "1" ] && exiterr "This script only supports Alpine Linux in a Docker container."
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;;
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*)
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exiterr "This script only supports Ubuntu, Debian, CentOS/RHEL 7/8 and Amazon Linux 2."
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echo "Error: This script only supports one of the following OS:" >&2
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echo " Ubuntu, Debian, CentOS/RHEL, Rocky Linux, AlmaLinux," >&2
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echo " Amazon Linux 2 and Alpine Linux" >&2
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exit 1
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;;
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esac
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if [ "$os_type" = "alpine" ]; then
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os_ver=$(. /etc/os-release && printf '%s' "$VERSION_ID")
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os_ver=$(. /etc/os-release && printf '%s' "$VERSION_ID" | cut -d '.' -f 1,2)
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if [ "$os_ver" != "3.14" ]; then
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exiterr "This script only supports Alpine Linux 3.14."
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fi
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else
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os_ver=$(sed 's/\..*//' /etc/debian_version | tr -dc 'A-Za-z0-9')
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fi
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@ -1,6 +1,7 @@
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#!/bin/sh
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#
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# Quick start script to set up an IPsec VPN server with IPsec/L2TP, Cisco IPsec and IKEv2
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# Quick start script to set up an IPsec VPN server on Ubuntu, Debian,
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# CentOS/RHEL, Rocky Linux, AlmaLinux, Amazon Linux 2 and Alpine Linux
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# Works on any dedicated server or virtual private server (VPS)
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#
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# DO NOT RUN THIS SCRIPT ON YOUR PC OR MAC!
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@ -61,23 +62,38 @@ check_os() {
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[Rr]aspbian)
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os_type=raspbian
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;;
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[Aa]lpine)
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os_type=alpine
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;;
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*)
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exiterr "This script only supports Ubuntu, Debian, CentOS/RHEL 7/8 and Amazon Linux 2."
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echo "Error: This script only supports one of the following OS:" >&2
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echo " Ubuntu, Debian, CentOS/RHEL, Rocky Linux, AlmaLinux," >&2
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echo " Amazon Linux 2 and Alpine Linux" >&2
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exit 1
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;;
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esac
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os_ver=$(sed 's/\..*//' /etc/debian_version | tr -dc 'A-Za-z0-9')
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if [ "$os_ver" = "8" ] || [ "$os_ver" = "jessiesid" ]; then
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exiterr "Debian 8 or Ubuntu < 16.04 is not supported."
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fi
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if { [ "$os_ver" = "10" ] || [ "$os_ver" = "11" ]; } && [ ! -e /dev/ppp ]; then
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exiterr "/dev/ppp is missing. Debian 11 or 10 users, see: https://git.io/vpndebian10"
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if [ "$os_type" = "alpine" ]; then
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os_ver=$(. /etc/os-release && printf '%s' "$VERSION_ID" | cut -d '.' -f 1,2)
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if [ "$os_ver" != "3.14" ]; then
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exiterr "This script only supports Alpine Linux 3.14."
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fi
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else
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os_ver=$(sed 's/\..*//' /etc/debian_version | tr -dc 'A-Za-z0-9')
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if [ "$os_ver" = "8" ] || [ "$os_ver" = "jessiesid" ]; then
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exiterr "Debian 8 or Ubuntu < 16.04 is not supported."
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fi
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if { [ "$os_ver" = "10" ] || [ "$os_ver" = "11" ]; } && [ ! -e /dev/ppp ]; then
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exiterr "/dev/ppp is missing. Debian 11 or 10 users, see: https://git.io/vpndebian10"
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fi
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fi
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fi
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}
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check_iface() {
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def_iface=$(route 2>/dev/null | grep -m 1 '^default' | grep -o '[^ ]*$')
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[ -z "$def_iface" ] && def_iface=$(ip -4 route list 0/0 2>/dev/null | grep -m 1 -Po '(?<=dev )(\S+)')
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if [ "$os_type" != "alpine" ]; then
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[ -z "$def_iface" ] && def_iface=$(ip -4 route list 0/0 2>/dev/null | grep -m 1 -Po '(?<=dev )(\S+)')
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fi
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def_state=$(cat "/sys/class/net/$def_iface/operstate" 2>/dev/null)
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check_wl=0
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if [ -n "$def_state" ] && [ "$def_state" != "down" ]; then
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@ -120,7 +136,7 @@ wait_for_apt() {
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done
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}
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install_wget() {
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install_pkgs() {
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if ! command -v wget >/dev/null 2>&1; then
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if [ "$os_type" = "ubuntu" ] || [ "$os_type" = "debian" ] || [ "$os_type" = "raspbian" ]; then
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wait_for_apt
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@ -133,13 +149,19 @@ install_wget() {
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set -x
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apt-get -yqq install wget >/dev/null
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) || exiterr "'apt-get install wget' failed."
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else
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elif [ "$os_type" != "alpine" ]; then
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(
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set -x
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yum -y -q install wget >/dev/null
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) || exiterr "'yum install wget' failed."
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fi
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fi
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if [ "$os_type" = "alpine" ]; then
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(
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set -x
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apk add -U -q bash net-tools wget sed grep
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) || exiterr "'apk add' failed."
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fi
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}
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get_setup_url() {
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@ -149,6 +171,8 @@ get_setup_url() {
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sh_file="vpnsetup_centos.sh"
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elif [ "$os_type" = "amzn" ]; then
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sh_file="vpnsetup_amzn.sh"
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elif [ "$os_type" = "alpine" ]; then
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sh_file="vpnsetup_alpine.sh"
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fi
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setup_url="$base_url/$sh_file"
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}
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@ -183,7 +207,7 @@ quickstart() {
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check_os
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check_iface
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check_iptables
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install_wget
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install_pkgs
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get_setup_url
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run_setup
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}
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@ -1,7 +1,7 @@
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#!/bin/bash
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#
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# Script to uninstall IPsec VPN on Ubuntu, Debian, CentOS/RHEL,
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# Rocky Linux, AlmaLinux and Amazon Linux 2
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# Rocky Linux, AlmaLinux, Amazon Linux 2 and Alpine Linux
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#
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# DO NOT RUN THIS SCRIPT ON YOUR PC OR MAC!
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#
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@ -53,8 +53,14 @@ check_os() {
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[Rr]aspbian)
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os_type=raspbian
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;;
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[Aa]lpine)
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os_type=alpine
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;;
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*)
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exiterr "This script only supports Ubuntu, Debian, CentOS/RHEL 7/8 and Amazon Linux 2."
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echo "Error: This script only supports one of the following OS:" >&2
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echo " Ubuntu, Debian, CentOS/RHEL, Rocky Linux, AlmaLinux," >&2
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echo " Amazon Linux 2 and Alpine Linux" >&2
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exit 1
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;;
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esac
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fi
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@ -70,7 +76,9 @@ check_libreswan() {
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check_iface() {
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def_iface=$(route 2>/dev/null | grep -m 1 '^default' | grep -o '[^ ]*$')
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[ -z "$def_iface" ] && def_iface=$(ip -4 route list 0/0 2>/dev/null | grep -m 1 -Po '(?<=dev )(\S+)')
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if [ "$os_type" != "alpine" ]; then
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[ -z "$def_iface" ] && def_iface=$(ip -4 route list 0/0 2>/dev/null | grep -m 1 -Po '(?<=dev )(\S+)')
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fi
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def_state=$(cat "/sys/class/net/$def_iface/operstate" 2>/dev/null)
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if [ -n "$def_state" ] && [ "$def_state" != "down" ]; then
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check_wl=0
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@ -146,6 +154,8 @@ remove_xl2tpd() {
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if [ "$os_type" = "ubuntu" ] || [ "$os_type" = "debian" ] || [ "$os_type" = "raspbian" ]; then
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export DEBIAN_FRONTEND=noninteractive
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apt-get -yqq purge xl2tpd >/dev/null
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elif [ "$os_type" = "alpine" ]; then
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apk del -q xl2tpd
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else
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yum -y -q remove xl2tpd >/dev/null
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fi
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@ -155,7 +165,11 @@ update_sysctl() {
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if grep -qs "hwdsl2 VPN script" /etc/sysctl.conf; then
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bigecho "Updating sysctl settings..."
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conf_bk "/etc/sysctl.conf"
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sed --follow-symlinks -i '/# Added by hwdsl2 VPN script/,+17d' /etc/sysctl.conf
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if [ "$os_type" = "alpine" ]; then
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sed -i '/# Added by hwdsl2 VPN script/,+17d' /etc/sysctl.conf
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else
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sed --follow-symlinks -i '/# Added by hwdsl2 VPN script/,+17d' /etc/sysctl.conf
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fi
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echo 0 > /proc/sys/net/ipv4/ip_forward
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fi
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}
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@ -164,13 +178,18 @@ update_rclocal() {
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if grep -qs "hwdsl2 VPN script" /etc/rc.local; then
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bigecho "Updating rc.local..."
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conf_bk "/etc/rc.local"
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sed --follow-symlinks -i '/# Added by hwdsl2 VPN script/,+4d' /etc/rc.local
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if [ "$os_type" = "alpine" ]; then
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sed -i '/# Added by hwdsl2 VPN script/,+4d' /etc/rc.local
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else
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sed --follow-symlinks -i '/# Added by hwdsl2 VPN script/,+4d' /etc/rc.local
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fi
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fi
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}
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update_iptables_rules() {
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use_nft=0
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if [ "$os_type" = "ubuntu" ] || [ "$os_type" = "debian" ] || [ "$os_type" = "raspbian" ]; then
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if [ "$os_type" = "ubuntu" ] || [ "$os_type" = "debian" ] || [ "$os_type" = "raspbian" ] \
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|| [ "$os_type" = "alpine" ]; then
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IPT_FILE=/etc/iptables.rules
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IPT_FILE2=/etc/iptables/rules.v4
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else
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@ -1,7 +1,7 @@
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#!/bin/sh
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#
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# Script to update Libreswan on Ubuntu, Debian, CentOS/RHEL, Rocky Linux,
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# AlmaLinux and Amazon Linux 2
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# AlmaLinux, Amazon Linux 2 and Alpine Linux
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#
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# The latest version of this script is available at:
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# https://github.com/hwdsl2/setup-ipsec-vpn
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@ -64,31 +64,59 @@ check_os() {
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[Rr]aspbian)
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os_type=raspbian
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;;
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[Aa]lpine)
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os_type=alpine
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;;
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*)
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exiterr "This script only supports Ubuntu, Debian, CentOS/RHEL 7/8 and Amazon Linux 2."
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echo "Error: This script only supports one of the following OS:" >&2
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echo " Ubuntu, Debian, CentOS/RHEL, Rocky Linux, AlmaLinux," >&2
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echo " Amazon Linux 2 and Alpine Linux" >&2
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exit 1
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;;
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esac
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os_ver=$(sed 's/\..*//' /etc/debian_version | tr -dc 'A-Za-z0-9')
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if [ "$os_ver" = "8" ] || [ "$os_ver" = "jessiesid" ]; then
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exiterr "Debian 8 or Ubuntu < 16.04 is not supported."
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if [ "$os_type" = "alpine" ]; then
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os_ver=$(. /etc/os-release && printf '%s' "$VERSION_ID" | cut -d '.' -f 1,2)
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if [ "$os_ver" != "3.14" ]; then
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exiterr "This script only supports Alpine Linux 3.14."
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fi
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else
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os_ver=$(sed 's/\..*//' /etc/debian_version | tr -dc 'A-Za-z0-9')
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if [ "$os_ver" = "8" ] || [ "$os_ver" = "jessiesid" ]; then
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exiterr "Debian 8 or Ubuntu < 16.04 is not supported."
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fi
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fi
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fi
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}
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check_libreswan() {
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case $SWAN_VER in
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3.32|4.[1-5])
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true
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;;
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*)
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if [ "$os_type" != "alpine" ]; then
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case $SWAN_VER in
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3.32|4.[1-5])
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true
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;;
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*)
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cat 1>&2 <<EOF
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Error: Libreswan version '$SWAN_VER' is not supported.
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This script can install one of these versions:
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3.32, 4.1-4.4 or 4.5
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EOF
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exit 1
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;;
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esac
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exit 1
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;;
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esac
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else
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case $SWAN_VER in
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4.5)
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true
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;;
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*)
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cat 1>&2 <<EOF
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Error: Libreswan version '$SWAN_VER' is not supported.
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This script can install Libreswan 4.5.
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EOF
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exit 1
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;;
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esac
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fi
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if [ "$SWAN_VER" = "3.32" ] && [ "$os_ver" = "11" ]; then
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exiterr "Libreswan 3.32 is not supported on Debian 11."
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@ -104,7 +132,7 @@ EOF
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fi
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}
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install_wget() {
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install_pkgs() {
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if ! command -v wget >/dev/null 2>&1; then
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if [ "$os_type" = "ubuntu" ] || [ "$os_type" = "debian" ] || [ "$os_type" = "raspbian" ]; then
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export DEBIAN_FRONTEND=noninteractive
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@ -116,13 +144,19 @@ install_wget() {
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set -x
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apt-get -yqq install wget >/dev/null
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) || exiterr "'apt-get install wget' failed."
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else
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elif [ "$os_type" != "alpine" ]; then
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(
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set -x
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yum -y -q install wget >/dev/null
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) || exiterr "'yum install wget' failed."
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fi
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fi
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if [ "$os_type" = "alpine" ]; then
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(
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set -x
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apk add -U -q bash wget sed grep
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) || exiterr "'apk add' failed."
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fi
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}
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get_setup_url() {
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@ -132,6 +166,8 @@ get_setup_url() {
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sh_file="vpnupgrade_centos.sh"
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elif [ "$os_type" = "amzn" ]; then
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sh_file="vpnupgrade_amzn.sh"
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elif [ "$os_type" = "alpine" ]; then
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sh_file="vpnupgrade_alpine.sh"
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fi
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setup_url="$base_url/$sh_file"
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}
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@ -158,7 +194,7 @@ vpnupgrade() {
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check_vz
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check_os
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check_libreswan
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install_wget
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install_pkgs
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get_setup_url
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run_setup
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}
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311
extras/vpnupgrade_alpine.sh
Executable file
311
extras/vpnupgrade_alpine.sh
Executable file
@ -0,0 +1,311 @@
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#!/bin/bash
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#
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# Script to update Libreswan on Alpine Linux
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#
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# The latest version of this script is available at:
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# https://github.com/hwdsl2/setup-ipsec-vpn
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#
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# Copyright (C) 2021 Lin Song <linsongui@gmail.com>
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#
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# This work is licensed under the Creative Commons Attribution-ShareAlike 3.0
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# Unported License: http://creativecommons.org/licenses/by-sa/3.0/
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#
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# Attribution required: please include my name in any derivative and let me
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# know how you have improved it!
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# Specify which Libreswan version to install. See: https://libreswan.org
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SWAN_VER=4.5
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### DO NOT edit below this line ###
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export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
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[ -n "$VPN_UPDATE_SWAN_VER" ] && SWAN_VER="$VPN_UPDATE_SWAN_VER"
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exiterr() { echo "Error: $1" >&2; exit 1; }
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exiterr2() { exiterr "'apk add' failed."; }
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bigecho() { echo "## $1"; }
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check_root() {
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if [ "$(id -u)" != 0 ]; then
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exiterr "Script must be run as root. Try 'sudo bash $0'"
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fi
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}
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check_vz() {
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if [ -f /proc/user_beancounters ]; then
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exiterr "OpenVZ VPS is not supported."
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fi
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}
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check_os() {
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os_type=$(lsb_release -si 2>/dev/null)
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os_arch=$(uname -m | tr -dc 'A-Za-z0-9_-')
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[ -z "$os_type" ] && [ -f /etc/os-release ] && os_type=$(. /etc/os-release && printf '%s' "$ID")
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case $os_type in
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[Aa]lpine)
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os_type=alpine
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;;
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*)
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exiterr "This script only supports Alpine Linux."
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;;
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esac
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os_ver=$(. /etc/os-release && printf '%s' "$VERSION_ID" | cut -d '.' -f 1,2)
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if [ "$os_ver" != "3.14" ]; then
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exiterr "This script only supports Alpine Linux 3.14."
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fi
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}
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check_libreswan() {
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case $SWAN_VER in
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4.5)
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true
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;;
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*)
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cat 1>&2 <<EOF
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Error: Libreswan version '$SWAN_VER' is not supported.
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This script can install Libreswan 4.5.
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EOF
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exit 1
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;;
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esac
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ipsec_ver=$(/usr/local/sbin/ipsec --version 2>/dev/null)
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swan_ver_old=$(printf '%s' "$ipsec_ver" | sed -e 's/.*Libreswan U\?//' -e 's/\( (\|\/K\).*//')
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if ! printf '%s' "$ipsec_ver" | grep -q "Libreswan"; then
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cat 1>&2 <<'EOF'
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Error: This script requires Libreswan already installed.
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See: https://github.com/hwdsl2/setup-ipsec-vpn
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EOF
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exit 1
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fi
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if [ "$swan_ver_old" = "$SWAN_VER" ]; then
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cat <<EOF
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You already have Libreswan version $SWAN_VER installed!
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If you continue, the same version will be re-installed.
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EOF
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printf "Do you want to continue anyway? [y/N] "
|
||||
read -r response
|
||||
case $response in
|
||||
[yY][eE][sS]|[yY])
|
||||
echo
|
||||
;;
|
||||
*)
|
||||
echo "Abort. No changes were made."
|
||||
exit 1
|
||||
;;
|
||||
esac
|
||||
fi
|
||||
}
|
||||
|
||||
show_setup_info() {
|
||||
cat <<EOF
|
||||
|
||||
Welcome! Use this script to update Libreswan on your IPsec VPN server.
|
||||
|
||||
Current version: Libreswan $swan_ver_old
|
||||
Version to install: Libreswan $SWAN_VER
|
||||
|
||||
Note: This script will make the following changes to your VPN configuration:
|
||||
- Fix obsolete ipsec.conf and/or ikev2.conf options
|
||||
- Optimize VPN ciphers
|
||||
Your other VPN config files will not be modified.
|
||||
|
||||
EOF
|
||||
|
||||
if [ "$SWAN_VER" != "4.5" ]; then
|
||||
cat <<'EOF'
|
||||
WARNING: Older versions of Libreswan could contain known security vulnerabilities.
|
||||
See https://libreswan.org/security/ for more information.
|
||||
Are you sure you want to install an older version?
|
||||
|
||||
EOF
|
||||
fi
|
||||
|
||||
printf "Do you want to continue? [y/N] "
|
||||
read -r response
|
||||
case $response in
|
||||
[yY][eE][sS]|[yY])
|
||||
echo
|
||||
;;
|
||||
*)
|
||||
echo "Abort. No changes were made."
|
||||
exit 1
|
||||
;;
|
||||
esac
|
||||
}
|
||||
|
||||
start_setup() {
|
||||
# shellcheck disable=SC2154
|
||||
trap 'dlo=$dl;dl=$LINENO' DEBUG 2>/dev/null
|
||||
trap 'finish $? $((dlo+1))' EXIT
|
||||
mkdir -p /opt/src
|
||||
cd /opt/src || exit 1
|
||||
}
|
||||
|
||||
install_pkgs() {
|
||||
bigecho "Installing required packages..."
|
||||
(
|
||||
set -x
|
||||
apk add -U -q bash bind-tools coreutils openssl wget iproute2 sed grep \
|
||||
libcap-ng libcurl libevent linux-pam musl nspr nss nss-tools \
|
||||
bison flex gcc make libc-dev bsd-compat-headers linux-pam-dev nss-dev \
|
||||
libcap-ng-dev libevent-dev curl-dev nspr-dev uuidgen openrc
|
||||
) || exiterr2
|
||||
}
|
||||
|
||||
get_libreswan() {
|
||||
bigecho "Downloading Libreswan..."
|
||||
swan_file="libreswan-$SWAN_VER.tar.gz"
|
||||
swan_url1="https://github.com/libreswan/libreswan/archive/v$SWAN_VER.tar.gz"
|
||||
swan_url2="https://download.libreswan.org/$swan_file"
|
||||
(
|
||||
set -x
|
||||
wget -t 3 -T 30 -q -O "$swan_file" "$swan_url1" || wget -t 3 -T 30 -q -O "$swan_file" "$swan_url2"
|
||||
) || exit 1
|
||||
/bin/rm -rf "/opt/src/libreswan-$SWAN_VER"
|
||||
tar xzf "$swan_file" && /bin/rm -f "$swan_file"
|
||||
}
|
||||
|
||||
install_libreswan() {
|
||||
bigecho "Compiling and installing Libreswan, please wait..."
|
||||
cd "libreswan-$SWAN_VER" || exit 1
|
||||
sed -i '28s/stdlib\.h/sys\/types.h/' include/fd.h
|
||||
cat > Makefile.inc.local <<'EOF'
|
||||
WERROR_CFLAGS=-w -s
|
||||
USE_DNSSEC=false
|
||||
USE_DH2=true
|
||||
FINALNSSDIR=/etc/ipsec.d
|
||||
USE_GLIBC_KERN_FLIP_HEADERS=true
|
||||
EOF
|
||||
NPROCS=$(grep -c ^processor /proc/cpuinfo)
|
||||
[ -z "$NPROCS" ] && NPROCS=1
|
||||
(
|
||||
set -x
|
||||
make "-j$((NPROCS+1))" -s base >/dev/null && make -s install-base >/dev/null
|
||||
)
|
||||
|
||||
cd /opt/src || exit 1
|
||||
/bin/rm -rf "/opt/src/libreswan-$SWAN_VER"
|
||||
if ! /usr/local/sbin/ipsec --version 2>/dev/null | grep -qF "$SWAN_VER"; then
|
||||
exiterr "Libreswan $SWAN_VER failed to build."
|
||||
fi
|
||||
}
|
||||
|
||||
update_config() {
|
||||
bigecho "Updating VPN configuration..."
|
||||
IKE_NEW=" ike=aes256-sha2,aes128-sha2,aes256-sha1,aes128-sha1,aes256-sha2;modp1024,aes128-sha1;modp1024"
|
||||
PHASE2_NEW=" phase2alg=aes_gcm-null,aes128-sha1,aes256-sha1,aes256-sha2_512,aes128-sha2,aes256-sha2"
|
||||
|
||||
if uname -m | grep -qi '^arm'; then
|
||||
if ! modprobe -q sha512; then
|
||||
PHASE2_NEW=" phase2alg=aes_gcm-null,aes128-sha1,aes256-sha1,aes128-sha2,aes256-sha2"
|
||||
fi
|
||||
fi
|
||||
|
||||
dns_state=0
|
||||
DNS_SRV1=$(grep "modecfgdns1=" /etc/ipsec.conf | head -n 1 | cut -d '=' -f 2)
|
||||
DNS_SRV2=$(grep "modecfgdns2=" /etc/ipsec.conf | head -n 1 | cut -d '=' -f 2)
|
||||
[ -n "$DNS_SRV1" ] && dns_state=2
|
||||
[ -n "$DNS_SRV1" ] && [ -n "$DNS_SRV2" ] && dns_state=1
|
||||
[ "$(grep -c "modecfgdns1=" /etc/ipsec.conf)" -gt "1" ] && dns_state=3
|
||||
|
||||
sed -i".old-$(date +%F-%T)" \
|
||||
-e "s/^[[:space:]]\+auth=/ phase2=/" \
|
||||
-e "s/^[[:space:]]\+forceencaps=/ encapsulation=/" \
|
||||
-e "s/^[[:space:]]\+ike-frag=/ fragmentation=/" \
|
||||
-e "s/^[[:space:]]\+sha2_truncbug=/ sha2-truncbug=/" \
|
||||
-e "s/^[[:space:]]\+sha2-truncbug=yes/ sha2-truncbug=no/" \
|
||||
-e "s/^[[:space:]]\+ike=.\+/$IKE_NEW/" \
|
||||
-e "s/^[[:space:]]\+phase2alg=.\+/$PHASE2_NEW/" /etc/ipsec.conf
|
||||
|
||||
if [ "$dns_state" = "1" ]; then
|
||||
sed -i -e "s/^[[:space:]]\+modecfgdns1=.\+/ modecfgdns=\"$DNS_SRV1 $DNS_SRV2\"/" \
|
||||
-e "/modecfgdns2=/d" /etc/ipsec.conf
|
||||
elif [ "$dns_state" = "2" ]; then
|
||||
sed -i "s/^[[:space:]]\+modecfgdns1=.\+/ modecfgdns=$DNS_SRV1/" /etc/ipsec.conf
|
||||
fi
|
||||
|
||||
sed -i "/ikev2=never/d" /etc/ipsec.conf
|
||||
sed -i "/conn shared/a \ ikev2=never" /etc/ipsec.conf
|
||||
|
||||
if grep -qs ike-frag /etc/ipsec.d/ikev2.conf; then
|
||||
sed -i 's/^[[:space:]]\+ike-frag=/ fragmentation=/' /etc/ipsec.d/ikev2.conf
|
||||
fi
|
||||
}
|
||||
|
||||
restart_ipsec() {
|
||||
bigecho "Restarting IPsec service..."
|
||||
mkdir -p /run/pluto
|
||||
service ipsec restart >/dev/null 2>&1
|
||||
}
|
||||
|
||||
show_setup_complete() {
|
||||
cat <<EOF
|
||||
|
||||
================================================
|
||||
|
||||
Libreswan $SWAN_VER has been successfully installed!
|
||||
|
||||
================================================
|
||||
|
||||
EOF
|
||||
|
||||
if [ "$dns_state" = "3" ]; then
|
||||
cat <<'EOF'
|
||||
IMPORTANT: You must edit /etc/ipsec.conf and replace
|
||||
all occurrences of these two lines:
|
||||
modecfgdns1=DNS_SERVER_1
|
||||
modecfgdns2=DNS_SERVER_2
|
||||
|
||||
with a single line like this:
|
||||
modecfgdns="DNS_SERVER_1 DNS_SERVER_2"
|
||||
|
||||
Then run "sudo service ipsec restart".
|
||||
|
||||
EOF
|
||||
fi
|
||||
}
|
||||
|
||||
check_swan_ver() {
|
||||
swan_ver_cur=4.5
|
||||
swan_ver_url="https://dl.ls20.com/v1/$os_type/$os_ver/swanverupg?arch=$os_arch&ver1=$swan_ver_old&ver2=$SWAN_VER"
|
||||
[ "$1" != "0" ] && swan_ver_url="$swan_ver_url&e=$2"
|
||||
swan_ver_latest=$(wget -t 3 -T 15 -qO- "$swan_ver_url")
|
||||
if printf '%s' "$swan_ver_latest" | grep -Eq '^([3-9]|[1-9][0-9]{1,2})(\.([0-9]|[1-9][0-9]{1,2})){1,2}$' \
|
||||
&& [ "$1" = "0" ] && [ "$swan_ver_cur" != "$swan_ver_latest" ] \
|
||||
&& printf '%s\n%s' "$swan_ver_cur" "$swan_ver_latest" | sort -C -V; then
|
||||
cat <<EOF
|
||||
Note: A newer version of Libreswan ($swan_ver_latest) is available.
|
||||
To update, run:
|
||||
wget https://git.io/vpnupgrade -O vpnup.sh && sudo sh vpnup.sh
|
||||
|
||||
EOF
|
||||
fi
|
||||
}
|
||||
|
||||
finish() {
|
||||
check_swan_ver "$1" "$2"
|
||||
exit "$1"
|
||||
}
|
||||
|
||||
vpnupgrade() {
|
||||
check_root
|
||||
check_vz
|
||||
check_os
|
||||
check_libreswan
|
||||
show_setup_info
|
||||
start_setup
|
||||
install_pkgs
|
||||
get_libreswan
|
||||
install_libreswan
|
||||
update_config
|
||||
restart_ipsec
|
||||
show_setup_complete
|
||||
}
|
||||
|
||||
## Defer setup until we have the complete script
|
||||
vpnupgrade "$@"
|
||||
|
||||
exit 0
|
||||
47
vpnsetup.sh
47
vpnsetup.sh
@ -1,7 +1,7 @@
|
||||
#!/bin/sh
|
||||
#
|
||||
# Script for automatic setup of an IPsec VPN server on Ubuntu, Debian,
|
||||
# CentOS/RHEL, Rocky Linux, AlmaLinux and Amazon Linux 2
|
||||
# CentOS/RHEL, Rocky Linux, AlmaLinux, Amazon Linux 2 and Alpine Linux
|
||||
# Works on any dedicated server or virtual private server (VPS)
|
||||
#
|
||||
# DO NOT RUN THIS SCRIPT ON YOUR PC OR MAC!
|
||||
@ -84,23 +84,38 @@ check_os() {
|
||||
[Rr]aspbian)
|
||||
os_type=raspbian
|
||||
;;
|
||||
[Aa]lpine)
|
||||
os_type=alpine
|
||||
;;
|
||||
*)
|
||||
exiterr "This script only supports Ubuntu, Debian, CentOS/RHEL 7/8 and Amazon Linux 2."
|
||||
echo "Error: This script only supports one of the following OS:" >&2
|
||||
echo " Ubuntu, Debian, CentOS/RHEL, Rocky Linux, AlmaLinux," >&2
|
||||
echo " Amazon Linux 2 and Alpine Linux" >&2
|
||||
exit 1
|
||||
;;
|
||||
esac
|
||||
os_ver=$(sed 's/\..*//' /etc/debian_version | tr -dc 'A-Za-z0-9')
|
||||
if [ "$os_ver" = "8" ] || [ "$os_ver" = "jessiesid" ]; then
|
||||
exiterr "Debian 8 or Ubuntu < 16.04 is not supported."
|
||||
fi
|
||||
if { [ "$os_ver" = "10" ] || [ "$os_ver" = "11" ]; } && [ ! -e /dev/ppp ]; then
|
||||
exiterr "/dev/ppp is missing. Debian 11 or 10 users, see: https://git.io/vpndebian10"
|
||||
if [ "$os_type" = "alpine" ]; then
|
||||
os_ver=$(. /etc/os-release && printf '%s' "$VERSION_ID" | cut -d '.' -f 1,2)
|
||||
if [ "$os_ver" != "3.14" ]; then
|
||||
exiterr "This script only supports Alpine Linux 3.14."
|
||||
fi
|
||||
else
|
||||
os_ver=$(sed 's/\..*//' /etc/debian_version | tr -dc 'A-Za-z0-9')
|
||||
if [ "$os_ver" = "8" ] || [ "$os_ver" = "jessiesid" ]; then
|
||||
exiterr "Debian 8 or Ubuntu < 16.04 is not supported."
|
||||
fi
|
||||
if { [ "$os_ver" = "10" ] || [ "$os_ver" = "11" ]; } && [ ! -e /dev/ppp ]; then
|
||||
exiterr "/dev/ppp is missing. Debian 11 or 10 users, see: https://git.io/vpndebian10"
|
||||
fi
|
||||
fi
|
||||
fi
|
||||
}
|
||||
|
||||
check_iface() {
|
||||
def_iface=$(route 2>/dev/null | grep -m 1 '^default' | grep -o '[^ ]*$')
|
||||
[ -z "$def_iface" ] && def_iface=$(ip -4 route list 0/0 2>/dev/null | grep -m 1 -Po '(?<=dev )(\S+)')
|
||||
if [ "$os_type" != "alpine" ]; then
|
||||
[ -z "$def_iface" ] && def_iface=$(ip -4 route list 0/0 2>/dev/null | grep -m 1 -Po '(?<=dev )(\S+)')
|
||||
fi
|
||||
def_state=$(cat "/sys/class/net/$def_iface/operstate" 2>/dev/null)
|
||||
check_wl=0
|
||||
if [ -n "$def_state" ] && [ "$def_state" != "down" ]; then
|
||||
@ -174,7 +189,7 @@ wait_for_apt() {
|
||||
done
|
||||
}
|
||||
|
||||
install_wget() {
|
||||
install_pkgs() {
|
||||
if ! command -v wget >/dev/null 2>&1; then
|
||||
if [ "$os_type" = "ubuntu" ] || [ "$os_type" = "debian" ] || [ "$os_type" = "raspbian" ]; then
|
||||
wait_for_apt
|
||||
@ -187,13 +202,19 @@ install_wget() {
|
||||
set -x
|
||||
apt-get -yqq install wget >/dev/null
|
||||
) || exiterr "'apt-get install wget' failed."
|
||||
else
|
||||
elif [ "$os_type" != "alpine" ]; then
|
||||
(
|
||||
set -x
|
||||
yum -y -q install wget >/dev/null
|
||||
) || exiterr "'yum install wget' failed."
|
||||
fi
|
||||
fi
|
||||
if [ "$os_type" = "alpine" ]; then
|
||||
(
|
||||
set -x
|
||||
apk add -U -q bash net-tools wget sed grep
|
||||
) || exiterr "'apk add' failed."
|
||||
fi
|
||||
}
|
||||
|
||||
get_setup_url() {
|
||||
@ -203,6 +224,8 @@ get_setup_url() {
|
||||
sh_file="vpnsetup_centos.sh"
|
||||
elif [ "$os_type" = "amzn" ]; then
|
||||
sh_file="vpnsetup_amzn.sh"
|
||||
elif [ "$os_type" = "alpine" ]; then
|
||||
sh_file="vpnsetup_alpine.sh"
|
||||
fi
|
||||
setup_url="$base_url/$sh_file"
|
||||
}
|
||||
@ -237,7 +260,7 @@ vpnsetup() {
|
||||
check_creds
|
||||
check_dns
|
||||
check_iptables
|
||||
install_wget
|
||||
install_pkgs
|
||||
get_setup_url
|
||||
run_setup
|
||||
}
|
||||
|
||||
546
vpnsetup_alpine.sh
Executable file
546
vpnsetup_alpine.sh
Executable file
@ -0,0 +1,546 @@
|
||||
#!/bin/bash
|
||||
#
|
||||
# Script for automatic setup of an IPsec VPN server on Alpine Linux
|
||||
#
|
||||
# DO NOT RUN THIS SCRIPT ON YOUR PC OR MAC!
|
||||
#
|
||||
# The latest version of this script is available at:
|
||||
# https://github.com/hwdsl2/setup-ipsec-vpn
|
||||
#
|
||||
# Copyright (C) 2021 Lin Song <linsongui@gmail.com>
|
||||
#
|
||||
# This work is licensed under the Creative Commons Attribution-ShareAlike 3.0
|
||||
# Unported License: http://creativecommons.org/licenses/by-sa/3.0/
|
||||
#
|
||||
# Attribution required: please include my name in any derivative and let me
|
||||
# know how you have improved it!
|
||||
|
||||
# =====================================================
|
||||
|
||||
# Define your own values for these variables
|
||||
# - IPsec pre-shared key, VPN username and password
|
||||
# - All values MUST be placed inside 'single quotes'
|
||||
# - DO NOT use these special characters within values: \ " '
|
||||
|
||||
YOUR_IPSEC_PSK=''
|
||||
YOUR_USERNAME=''
|
||||
YOUR_PASSWORD=''
|
||||
|
||||
# Important notes: https://git.io/vpnnotes
|
||||
# Setup VPN clients: https://git.io/vpnclients
|
||||
# IKEv2 guide: https://git.io/ikev2
|
||||
|
||||
# =====================================================
|
||||
|
||||
export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
|
||||
SYS_DT=$(date +%F-%T | tr ':' '_')
|
||||
|
||||
exiterr() { echo "Error: $1" >&2; exit 1; }
|
||||
exiterr2() { exiterr "'apk add' failed."; }
|
||||
conf_bk() { /bin/cp -f "$1" "$1.old-$SYS_DT" 2>/dev/null; }
|
||||
bigecho() { echo "## $1"; }
|
||||
|
||||
check_ip() {
|
||||
IP_REGEX='^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$'
|
||||
printf '%s' "$1" | tr -d '\n' | grep -Eq "$IP_REGEX"
|
||||
}
|
||||
|
||||
check_root() {
|
||||
if [ "$(id -u)" != 0 ]; then
|
||||
exiterr "Script must be run as root. Try 'sudo bash $0'"
|
||||
fi
|
||||
}
|
||||
|
||||
check_vz() {
|
||||
if [ -f /proc/user_beancounters ]; then
|
||||
exiterr "OpenVZ VPS is not supported."
|
||||
fi
|
||||
}
|
||||
|
||||
check_os() {
|
||||
os_type=$(lsb_release -si 2>/dev/null)
|
||||
os_arch=$(uname -m | tr -dc 'A-Za-z0-9_-')
|
||||
[ -z "$os_type" ] && [ -f /etc/os-release ] && os_type=$(. /etc/os-release && printf '%s' "$ID")
|
||||
case $os_type in
|
||||
[Aa]lpine)
|
||||
os_type=alpine
|
||||
;;
|
||||
*)
|
||||
exiterr "This script only supports Alpine Linux."
|
||||
;;
|
||||
esac
|
||||
os_ver=$(. /etc/os-release && printf '%s' "$VERSION_ID" | cut -d '.' -f 1,2)
|
||||
if [ "$os_ver" != "3.14" ]; then
|
||||
exiterr "This script only supports Alpine Linux 3.14."
|
||||
fi
|
||||
}
|
||||
|
||||
check_iface() {
|
||||
def_iface=$(route 2>/dev/null | grep -m 1 '^default' | grep -o '[^ ]*$')
|
||||
def_state=$(cat "/sys/class/net/$def_iface/operstate" 2>/dev/null)
|
||||
if [ -n "$def_state" ] && [ "$def_state" != "down" ]; then
|
||||
if ! uname -m | grep -qi -e '^arm' -e '^aarch64'; then
|
||||
case $def_iface in
|
||||
wl*)
|
||||
exiterr "Wireless interface '$def_iface' detected. DO NOT run this script on your PC or Mac!"
|
||||
;;
|
||||
esac
|
||||
fi
|
||||
NET_IFACE="$def_iface"
|
||||
else
|
||||
eth0_state=$(cat "/sys/class/net/eth0/operstate" 2>/dev/null)
|
||||
if [ -z "$eth0_state" ] || [ "$eth0_state" = "down" ]; then
|
||||
exiterr "Could not detect the default network interface."
|
||||
fi
|
||||
NET_IFACE=eth0
|
||||
fi
|
||||
}
|
||||
|
||||
check_creds() {
|
||||
[ -n "$YOUR_IPSEC_PSK" ] && VPN_IPSEC_PSK="$YOUR_IPSEC_PSK"
|
||||
[ -n "$YOUR_USERNAME" ] && VPN_USER="$YOUR_USERNAME"
|
||||
[ -n "$YOUR_PASSWORD" ] && VPN_PASSWORD="$YOUR_PASSWORD"
|
||||
|
||||
if [ -z "$VPN_IPSEC_PSK" ] && [ -z "$VPN_USER" ] && [ -z "$VPN_PASSWORD" ]; then
|
||||
bigecho "VPN credentials not set by user. Generating random PSK and password..."
|
||||
VPN_IPSEC_PSK=$(LC_CTYPE=C tr -dc 'A-HJ-NPR-Za-km-z2-9' </dev/urandom 2>/dev/null | head -c 20)
|
||||
VPN_USER=vpnuser
|
||||
VPN_PASSWORD=$(LC_CTYPE=C tr -dc 'A-HJ-NPR-Za-km-z2-9' </dev/urandom 2>/dev/null | head -c 16)
|
||||
fi
|
||||
|
||||
if [ -z "$VPN_IPSEC_PSK" ] || [ -z "$VPN_USER" ] || [ -z "$VPN_PASSWORD" ]; then
|
||||
exiterr "All VPN credentials must be specified. Edit the script and re-enter them."
|
||||
fi
|
||||
|
||||
if printf '%s' "$VPN_IPSEC_PSK $VPN_USER $VPN_PASSWORD" | LC_ALL=C grep -q '[^ -~]\+'; then
|
||||
exiterr "VPN credentials must not contain non-ASCII characters."
|
||||
fi
|
||||
|
||||
case "$VPN_IPSEC_PSK $VPN_USER $VPN_PASSWORD" in
|
||||
*[\\\"\']*)
|
||||
exiterr "VPN credentials must not contain these special characters: \\ \" '"
|
||||
;;
|
||||
esac
|
||||
}
|
||||
|
||||
check_dns() {
|
||||
if { [ -n "$VPN_DNS_SRV1" ] && ! check_ip "$VPN_DNS_SRV1"; } \
|
||||
|| { [ -n "$VPN_DNS_SRV2" ] && ! check_ip "$VPN_DNS_SRV2"; } then
|
||||
exiterr "The DNS server specified is invalid."
|
||||
fi
|
||||
}
|
||||
|
||||
start_setup() {
|
||||
bigecho "VPN setup in progress... Please be patient."
|
||||
# shellcheck disable=SC2154
|
||||
trap 'dlo=$dl;dl=$LINENO' DEBUG 2>/dev/null
|
||||
trap 'finish $? $((dlo+1))' EXIT
|
||||
mkdir -p /opt/src
|
||||
cd /opt/src || exit 1
|
||||
}
|
||||
|
||||
install_setup_pkgs() {
|
||||
bigecho "Installing packages required for setup..."
|
||||
(
|
||||
set -x
|
||||
apk add -U -q bash bind-tools coreutils openssl wget iproute2 sed grep
|
||||
) || exiterr2
|
||||
}
|
||||
|
||||
detect_ip() {
|
||||
bigecho "Trying to auto discover IP of this server..."
|
||||
public_ip=${VPN_PUBLIC_IP:-''}
|
||||
check_ip "$public_ip" || public_ip=$(dig @resolver1.opendns.com -t A -4 myip.opendns.com +short)
|
||||
check_ip "$public_ip" || public_ip=$(wget -t 3 -T 15 -qO- http://ipv4.icanhazip.com)
|
||||
check_ip "$public_ip" || exiterr "Cannot detect this server's public IP. Define it as variable 'VPN_PUBLIC_IP' and re-run this script."
|
||||
}
|
||||
|
||||
install_vpn_pkgs() {
|
||||
bigecho "Installing packages required for the VPN..."
|
||||
(
|
||||
set -x
|
||||
apk add -U -q libcap-ng libcurl libevent linux-pam musl nspr nss nss-tools \
|
||||
bison flex gcc make libc-dev bsd-compat-headers linux-pam-dev nss-dev \
|
||||
libcap-ng-dev libevent-dev curl-dev nspr-dev uuidgen openrc xl2tpd
|
||||
) || exiterr2
|
||||
}
|
||||
|
||||
install_fail2ban() {
|
||||
bigecho "Installing Fail2Ban to protect SSH..."
|
||||
(
|
||||
set -x
|
||||
apk add -U -q fail2ban
|
||||
) || exiterr2
|
||||
}
|
||||
|
||||
get_ikev2_script() {
|
||||
bigecho "Downloading IKEv2 script..."
|
||||
ikev2_url="https://github.com/hwdsl2/setup-ipsec-vpn/raw/master/extras/ikev2setup.sh"
|
||||
(
|
||||
set -x
|
||||
wget -t 3 -T 30 -q -O ikev2.sh "$ikev2_url"
|
||||
) || /bin/rm -f ikev2.sh
|
||||
[ -s ikev2.sh ] && chmod +x ikev2.sh && ln -s /opt/src/ikev2.sh /usr/bin 2>/dev/null
|
||||
}
|
||||
|
||||
check_libreswan() {
|
||||
SWAN_VER=4.5
|
||||
ipsec_ver=$(/usr/local/sbin/ipsec --version 2>/dev/null)
|
||||
swan_ver_old=$(printf '%s' "$ipsec_ver" | sed -e 's/.*Libreswan U\?//' -e 's/\( (\|\/K\).*//')
|
||||
[ "$swan_ver_old" = "$SWAN_VER" ]
|
||||
}
|
||||
|
||||
get_libreswan() {
|
||||
if ! check_libreswan; then
|
||||
bigecho "Downloading Libreswan..."
|
||||
swan_file="libreswan-$SWAN_VER.tar.gz"
|
||||
swan_url1="https://github.com/libreswan/libreswan/archive/v$SWAN_VER.tar.gz"
|
||||
swan_url2="https://download.libreswan.org/$swan_file"
|
||||
(
|
||||
set -x
|
||||
wget -t 3 -T 30 -q -O "$swan_file" "$swan_url1" || wget -t 3 -T 30 -q -O "$swan_file" "$swan_url2"
|
||||
) || exit 1
|
||||
/bin/rm -rf "/opt/src/libreswan-$SWAN_VER"
|
||||
tar xzf "$swan_file" && /bin/rm -f "$swan_file"
|
||||
else
|
||||
bigecho "Libreswan $SWAN_VER is already installed, skipping..."
|
||||
fi
|
||||
}
|
||||
|
||||
install_libreswan() {
|
||||
if ! check_libreswan; then
|
||||
bigecho "Compiling and installing Libreswan, please wait..."
|
||||
cd "libreswan-$SWAN_VER" || exit 1
|
||||
sed -i '28s/stdlib\.h/sys\/types.h/' include/fd.h
|
||||
cat > Makefile.inc.local <<'EOF'
|
||||
WERROR_CFLAGS=-w -s
|
||||
USE_DNSSEC=false
|
||||
USE_DH2=true
|
||||
FINALNSSDIR=/etc/ipsec.d
|
||||
USE_GLIBC_KERN_FLIP_HEADERS=true
|
||||
EOF
|
||||
NPROCS=$(grep -c ^processor /proc/cpuinfo)
|
||||
[ -z "$NPROCS" ] && NPROCS=1
|
||||
(
|
||||
set -x
|
||||
make "-j$((NPROCS+1))" -s base >/dev/null && make -s install-base >/dev/null
|
||||
)
|
||||
|
||||
cd /opt/src || exit 1
|
||||
/bin/rm -rf "/opt/src/libreswan-$SWAN_VER"
|
||||
if ! /usr/local/sbin/ipsec --version 2>/dev/null | grep -qF "$SWAN_VER"; then
|
||||
exiterr "Libreswan $SWAN_VER failed to build."
|
||||
fi
|
||||
fi
|
||||
}
|
||||
|
||||
create_vpn_config() {
|
||||
bigecho "Creating VPN configuration..."
|
||||
|
||||
L2TP_NET=${VPN_L2TP_NET:-'192.168.42.0/24'}
|
||||
L2TP_LOCAL=${VPN_L2TP_LOCAL:-'192.168.42.1'}
|
||||
L2TP_POOL=${VPN_L2TP_POOL:-'192.168.42.10-192.168.42.250'}
|
||||
XAUTH_NET=${VPN_XAUTH_NET:-'192.168.43.0/24'}
|
||||
XAUTH_POOL=${VPN_XAUTH_POOL:-'192.168.43.10-192.168.43.250'}
|
||||
DNS_SRV1=${VPN_DNS_SRV1:-'8.8.8.8'}
|
||||
DNS_SRV2=${VPN_DNS_SRV2:-'8.8.4.4'}
|
||||
DNS_SRVS="\"$DNS_SRV1 $DNS_SRV2\""
|
||||
[ -n "$VPN_DNS_SRV1" ] && [ -z "$VPN_DNS_SRV2" ] && DNS_SRVS="$DNS_SRV1"
|
||||
|
||||
# Create IPsec config
|
||||
conf_bk "/etc/ipsec.conf"
|
||||
cat > /etc/ipsec.conf <<EOF
|
||||
version 2.0
|
||||
|
||||
config setup
|
||||
virtual-private=%v4:10.0.0.0/8,%v4:192.168.0.0/16,%v4:172.16.0.0/12,%v4:!$L2TP_NET,%v4:!$XAUTH_NET
|
||||
uniqueids=no
|
||||
|
||||
conn shared
|
||||
left=%defaultroute
|
||||
leftid=$public_ip
|
||||
right=%any
|
||||
encapsulation=yes
|
||||
authby=secret
|
||||
pfs=no
|
||||
rekey=no
|
||||
keyingtries=5
|
||||
dpddelay=30
|
||||
dpdtimeout=120
|
||||
dpdaction=clear
|
||||
ikev2=never
|
||||
ike=aes256-sha2,aes128-sha2,aes256-sha1,aes128-sha1,aes256-sha2;modp1024,aes128-sha1;modp1024
|
||||
phase2alg=aes_gcm-null,aes128-sha1,aes256-sha1,aes256-sha2_512,aes128-sha2,aes256-sha2
|
||||
ikelifetime=24h
|
||||
salifetime=24h
|
||||
sha2-truncbug=no
|
||||
|
||||
conn l2tp-psk
|
||||
auto=add
|
||||
leftprotoport=17/1701
|
||||
rightprotoport=17/%any
|
||||
type=transport
|
||||
also=shared
|
||||
|
||||
conn xauth-psk
|
||||
auto=add
|
||||
leftsubnet=0.0.0.0/0
|
||||
rightaddresspool=$XAUTH_POOL
|
||||
modecfgdns=$DNS_SRVS
|
||||
leftxauthserver=yes
|
||||
rightxauthclient=yes
|
||||
leftmodecfgserver=yes
|
||||
rightmodecfgclient=yes
|
||||
modecfgpull=yes
|
||||
cisco-unity=yes
|
||||
also=shared
|
||||
|
||||
include /etc/ipsec.d/*.conf
|
||||
EOF
|
||||
|
||||
if uname -m | grep -qi '^arm'; then
|
||||
if ! modprobe -q sha512; then
|
||||
sed -i '/phase2alg/s/,aes256-sha2_512//' /etc/ipsec.conf
|
||||
fi
|
||||
fi
|
||||
|
||||
# Specify IPsec PSK
|
||||
conf_bk "/etc/ipsec.secrets"
|
||||
cat > /etc/ipsec.secrets <<EOF
|
||||
%any %any : PSK "$VPN_IPSEC_PSK"
|
||||
EOF
|
||||
|
||||
# Create xl2tpd config
|
||||
conf_bk "/etc/xl2tpd/xl2tpd.conf"
|
||||
cat > /etc/xl2tpd/xl2tpd.conf <<EOF
|
||||
[global]
|
||||
port = 1701
|
||||
|
||||
[lns default]
|
||||
ip range = $L2TP_POOL
|
||||
local ip = $L2TP_LOCAL
|
||||
require chap = yes
|
||||
refuse pap = yes
|
||||
require authentication = yes
|
||||
name = l2tpd
|
||||
pppoptfile = /etc/ppp/options.xl2tpd
|
||||
length bit = yes
|
||||
EOF
|
||||
|
||||
# Set xl2tpd options
|
||||
conf_bk "/etc/ppp/options.xl2tpd"
|
||||
cat > /etc/ppp/options.xl2tpd <<EOF
|
||||
+mschap-v2
|
||||
ipcp-accept-local
|
||||
ipcp-accept-remote
|
||||
noccp
|
||||
auth
|
||||
mtu 1280
|
||||
mru 1280
|
||||
proxyarp
|
||||
lcp-echo-failure 4
|
||||
lcp-echo-interval 30
|
||||
connect-delay 5000
|
||||
ms-dns $DNS_SRV1
|
||||
EOF
|
||||
|
||||
if [ -z "$VPN_DNS_SRV1" ] || [ -n "$VPN_DNS_SRV2" ]; then
|
||||
cat >> /etc/ppp/options.xl2tpd <<EOF
|
||||
ms-dns $DNS_SRV2
|
||||
EOF
|
||||
fi
|
||||
|
||||
# Create VPN credentials
|
||||
conf_bk "/etc/ppp/chap-secrets"
|
||||
cat > /etc/ppp/chap-secrets <<EOF
|
||||
"$VPN_USER" l2tpd "$VPN_PASSWORD" *
|
||||
EOF
|
||||
|
||||
conf_bk "/etc/ipsec.d/passwd"
|
||||
VPN_PASSWORD_ENC=$(openssl passwd -1 "$VPN_PASSWORD")
|
||||
cat > /etc/ipsec.d/passwd <<EOF
|
||||
$VPN_USER:$VPN_PASSWORD_ENC:xauth-psk
|
||||
EOF
|
||||
}
|
||||
|
||||
update_sysctl() {
|
||||
bigecho "Updating sysctl settings..."
|
||||
if ! grep -qs "hwdsl2 VPN script" /etc/sysctl.conf; then
|
||||
conf_bk "/etc/sysctl.conf"
|
||||
cat >> /etc/sysctl.conf <<EOF
|
||||
|
||||
# Added by hwdsl2 VPN script
|
||||
kernel.msgmnb = 65536
|
||||
kernel.msgmax = 65536
|
||||
|
||||
net.ipv4.ip_forward = 1
|
||||
net.ipv4.conf.all.accept_redirects = 0
|
||||
net.ipv4.conf.all.send_redirects = 0
|
||||
net.ipv4.conf.all.rp_filter = 0
|
||||
net.ipv4.conf.default.accept_redirects = 0
|
||||
net.ipv4.conf.default.send_redirects = 0
|
||||
net.ipv4.conf.default.rp_filter = 0
|
||||
net.ipv4.conf.$NET_IFACE.send_redirects = 0
|
||||
net.ipv4.conf.$NET_IFACE.rp_filter = 0
|
||||
|
||||
net.core.wmem_max = 12582912
|
||||
net.core.rmem_max = 12582912
|
||||
net.ipv4.tcp_rmem = 10240 87380 12582912
|
||||
net.ipv4.tcp_wmem = 10240 87380 12582912
|
||||
EOF
|
||||
fi
|
||||
}
|
||||
|
||||
update_iptables() {
|
||||
bigecho "Updating IPTables rules..."
|
||||
IPT_FILE=/etc/iptables.rules
|
||||
ipt_flag=0
|
||||
if ! grep -qs "hwdsl2 VPN script" "$IPT_FILE"; then
|
||||
ipt_flag=1
|
||||
fi
|
||||
|
||||
ipi='iptables -I INPUT'
|
||||
ipf='iptables -I FORWARD'
|
||||
ipp='iptables -t nat -I POSTROUTING'
|
||||
res='RELATED,ESTABLISHED'
|
||||
if [ "$ipt_flag" = "1" ]; then
|
||||
service fail2ban stop >/dev/null 2>&1
|
||||
iptables-save > "$IPT_FILE.old-$SYS_DT"
|
||||
$ipi 1 -p udp --dport 1701 -m policy --dir in --pol none -j DROP
|
||||
$ipi 2 -m conntrack --ctstate INVALID -j DROP
|
||||
$ipi 3 -m conntrack --ctstate "$res" -j ACCEPT
|
||||
$ipi 4 -p udp -m multiport --dports 500,4500 -j ACCEPT
|
||||
$ipi 5 -p udp --dport 1701 -m policy --dir in --pol ipsec -j ACCEPT
|
||||
$ipi 6 -p udp --dport 1701 -j DROP
|
||||
$ipf 1 -m conntrack --ctstate INVALID -j DROP
|
||||
$ipf 2 -i "$NET_IFACE" -o ppp+ -m conntrack --ctstate "$res" -j ACCEPT
|
||||
$ipf 3 -i ppp+ -o "$NET_IFACE" -j ACCEPT
|
||||
$ipf 4 -i ppp+ -o ppp+ -j ACCEPT
|
||||
$ipf 5 -i "$NET_IFACE" -d "$XAUTH_NET" -m conntrack --ctstate "$res" -j ACCEPT
|
||||
$ipf 6 -s "$XAUTH_NET" -o "$NET_IFACE" -j ACCEPT
|
||||
$ipf 7 -s "$XAUTH_NET" -o ppp+ -j ACCEPT
|
||||
iptables -A FORWARD -j DROP
|
||||
$ipp -s "$XAUTH_NET" -o "$NET_IFACE" -m policy --dir out --pol none -j MASQUERADE
|
||||
$ipp -s "$L2TP_NET" -o "$NET_IFACE" -j MASQUERADE
|
||||
echo "# Modified by hwdsl2 VPN script" > "$IPT_FILE"
|
||||
iptables-save >> "$IPT_FILE"
|
||||
fi
|
||||
}
|
||||
|
||||
enable_on_boot() {
|
||||
bigecho "Enabling services on boot..."
|
||||
mkdir -p /etc/network/if-pre-up.d
|
||||
cat > /etc/network/if-pre-up.d/iptablesload <<'EOF'
|
||||
#!/bin/sh
|
||||
iptables-restore < /etc/iptables.rules
|
||||
exit 0
|
||||
EOF
|
||||
chmod +x /etc/network/if-pre-up.d/iptablesload
|
||||
|
||||
for svc in fail2ban ipsec xl2tpd; do
|
||||
rc-update add "$svc" >/dev/null
|
||||
done
|
||||
|
||||
if ! grep -qs "hwdsl2 VPN script" /etc/rc.local; then
|
||||
if [ -f /etc/rc.local ]; then
|
||||
conf_bk "/etc/rc.local"
|
||||
else
|
||||
echo '#!/bin/sh' > /etc/rc.local
|
||||
fi
|
||||
cat >> /etc/rc.local <<'EOF'
|
||||
|
||||
# Added by hwdsl2 VPN script
|
||||
(sleep 15
|
||||
service ipsec restart
|
||||
service xl2tpd restart
|
||||
echo 1 > /proc/sys/net/ipv4/ip_forward)&
|
||||
EOF
|
||||
fi
|
||||
}
|
||||
|
||||
start_services() {
|
||||
bigecho "Starting services..."
|
||||
sysctl -e -q -p
|
||||
|
||||
chmod +x /etc/rc.local
|
||||
chmod 600 /etc/ipsec.secrets* /etc/ppp/chap-secrets* /etc/ipsec.d/passwd*
|
||||
|
||||
mkdir -p /run/pluto
|
||||
service fail2ban restart >/dev/null 2>&1
|
||||
service ipsec restart >/dev/null 2>&1
|
||||
service xl2tpd restart >/dev/null 2>&1
|
||||
}
|
||||
|
||||
show_vpn_info() {
|
||||
cat <<EOF
|
||||
|
||||
================================================
|
||||
|
||||
IPsec VPN server is now ready for use!
|
||||
|
||||
Connect to your new VPN with these details:
|
||||
|
||||
Server IP: $public_ip
|
||||
IPsec PSK: $VPN_IPSEC_PSK
|
||||
Username: $VPN_USER
|
||||
Password: $VPN_PASSWORD
|
||||
|
||||
Write these down. You'll need them to connect!
|
||||
|
||||
Important notes: https://git.io/vpnnotes
|
||||
Setup VPN clients: https://git.io/vpnclients
|
||||
IKEv2 guide: https://git.io/ikev2
|
||||
|
||||
================================================
|
||||
|
||||
EOF
|
||||
}
|
||||
|
||||
check_swan_ver() {
|
||||
swan_ver_url="https://dl.ls20.com/v1/$os_type/$os_ver/swanver?arch=$os_arch&ver=$SWAN_VER"
|
||||
[ "$1" != "0" ] && swan_ver_url="$swan_ver_url&e=$2"
|
||||
swan_ver_latest=$(wget -t 3 -T 15 -qO- "$swan_ver_url")
|
||||
if printf '%s' "$swan_ver_latest" | grep -Eq '^([3-9]|[1-9][0-9]{1,2})(\.([0-9]|[1-9][0-9]{1,2})){1,2}$' \
|
||||
&& [ "$1" = "0" ] && [ -n "$SWAN_VER" ] && [ "$SWAN_VER" != "$swan_ver_latest" ] \
|
||||
&& printf '%s\n%s' "$SWAN_VER" "$swan_ver_latest" | sort -C -V; then
|
||||
cat <<EOF
|
||||
Note: A newer version of Libreswan ($swan_ver_latest) is available.
|
||||
To update, run:
|
||||
wget https://git.io/vpnupgrade -O vpnup.sh && sudo sh vpnup.sh
|
||||
|
||||
EOF
|
||||
fi
|
||||
}
|
||||
|
||||
finish() {
|
||||
check_swan_ver "$1" "$2"
|
||||
exit "$1"
|
||||
}
|
||||
|
||||
vpnsetup() {
|
||||
check_root
|
||||
check_vz
|
||||
check_os
|
||||
check_iface
|
||||
check_creds
|
||||
check_dns
|
||||
start_setup
|
||||
install_setup_pkgs
|
||||
detect_ip
|
||||
install_vpn_pkgs
|
||||
install_fail2ban
|
||||
get_ikev2_script
|
||||
get_libreswan
|
||||
install_libreswan
|
||||
create_vpn_config
|
||||
update_sysctl
|
||||
update_iptables
|
||||
enable_on_boot
|
||||
start_services
|
||||
show_vpn_info
|
||||
}
|
||||
|
||||
## Defer setup until we have the complete script
|
||||
vpnsetup "$@"
|
||||
|
||||
exit 0
|
||||
Loading…
Reference in New Issue
Block a user