Add Amazon Linux 2
This commit is contained in:
hwdsl2
parent
74b2c4885e
commit
e7bbb50670
@ -1,6 +1,6 @@
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#!/bin/bash
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#
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# Script to set up IKEv2 on Ubuntu, Debian and CentOS/RHEL
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# Script to set up IKEv2 on Ubuntu, Debian, CentOS/RHEL and Amazon Linux 2
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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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@ -341,6 +341,7 @@ if [ "$mobike_support" = "1" ]; then
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[ "$os_type" = "ubuntu" ] && os_type=Ubuntu
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fi
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[ -z "$os_type" ] && [ -f /etc/redhat-release ] && os_type=CentOS/RHEL
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grep -qs "Amazon Linux release 2" /etc/system-release && os_type=Amzn
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# Linux kernels on Ubuntu do not support MOBIKE
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if [ -z "$os_type" ] || [ "$os_type" = "Ubuntu" ]; then
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mobike_support=0
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262
extras/vpnupgrade_amzn.sh
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262
extras/vpnupgrade_amzn.sh
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@ -0,0 +1,262 @@
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#!/bin/sh
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#
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# Script to upgrade Libreswan on Amazon Linux 2
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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) 2020 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=4.1
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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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exiterr() { echo "Error: $1" >&2; exit 1; }
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exiterr2() { exiterr "'yum install' failed."; }
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vpnupgrade() {
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if ! grep -qs "Amazon Linux release 2" /etc/system-release; then
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echo "Error: This script only supports Amazon Linux 2." >&2
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echo "For Ubuntu/Debian, use https://git.io/vpnupgrade" >&2
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echo "For CentOS/RHEL, use https://git.io/vpnupgrade-centos" >&2
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exit 1
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fi
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if [ "$(id -u)" != 0 ]; then
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exiterr "Script must be run as root. Try 'sudo sh $0'"
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fi
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case "$SWAN_VER" in
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3.2[679]|3.3[12]|4.1)
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/bin/true
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;;
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*)
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cat 1>&2 <<EOF
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Error: Libreswan version '$SWAN_VER' is not supported.
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This script can install one of the following versions:
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3.26-3.27, 3.29, 3.31-3.32 or 4.1
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EOF
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exit 1
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;;
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esac
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ipsec_ver=$(/usr/local/sbin/ipsec --version 2>/dev/null)
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ipsec_ver_short=$(printf '%s' "$ipsec_ver" | sed -e 's/Linux Libreswan/Libreswan/' -e 's/ (netkey) on .*//')
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swan_ver_old=$(printf '%s' "$ipsec_ver_short" | sed -e 's/Libreswan //')
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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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echo "You already have Libreswan version $SWAN_VER installed! "
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echo "If you continue, the same version will be re-installed."
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echo
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printf "Do you want to continue anyway? [y/N] "
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read -r response
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case $response in
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[yY][eE][sS]|[yY])
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echo
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;;
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*)
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echo "Abort. No changes were made."
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exit 1
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;;
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esac
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fi
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clear
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cat <<EOF
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Welcome! This script will build and install Libreswan on your server.
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Additional packages required for compilation will also be installed.
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It is intended for upgrading servers to a newer Libreswan version.
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Current version: $ipsec_ver_short
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Version to install: Libreswan $SWAN_VER
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EOF
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cat <<'EOF'
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NOTE: This script will make the following changes to your IPsec config:
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- Fix obsolete ipsec.conf and/or ikev2.conf options
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- Optimize VPN ciphers
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Your other VPN configuration files will not be modified.
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EOF
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case "$SWAN_VER" in
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3.2[679]|3.3[12])
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cat <<'EOF'
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WARNING: Older versions of Libreswan could contain known security vulnerabilities.
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See https://libreswan.org/security/ for more information.
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Are you sure you want to install an older version?
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EOF
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;;
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esac
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printf "Do you want to continue? [y/N] "
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read -r response
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case $response in
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[yY][eE][sS]|[yY])
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echo
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echo "Please be patient. Setup is continuing..."
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echo
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;;
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*)
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echo "Abort. No changes were made."
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exit 1
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;;
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esac
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# Create and change to working dir
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mkdir -p /opt/src
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cd /opt/src || exit 1
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# Add the EPEL repository
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amazon-linux-extras install epel -y || exiterr2
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# Install necessary packages
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yum -y install nss-devel nspr-devel pkgconfig pam-devel \
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libcap-ng-devel libselinux-devel curl-devel nss-tools \
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flex bison gcc make wget sed tar \
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systemd-devel libevent-devel fipscheck-devel || exiterr2
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# Compile and install Libreswan
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swan_file="libreswan-$SWAN_VER.tar.gz"
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swan_url1="https://github.com/libreswan/libreswan/archive/v$SWAN_VER.tar.gz"
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swan_url2="https://download.libreswan.org/$swan_file"
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if ! { wget -t 3 -T 30 -nv -O "$swan_file" "$swan_url1" || wget -t 3 -T 30 -nv -O "$swan_file" "$swan_url2"; }; then
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exit 1
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fi
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/bin/rm -rf "/opt/src/libreswan-$SWAN_VER"
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tar xzf "$swan_file" && /bin/rm -f "$swan_file"
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cd "libreswan-$SWAN_VER" || exit 1
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[ "$SWAN_VER" = "3.26" ] && sed -i 's/-lfreebl //' mk/config.mk
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[ "$SWAN_VER" = "3.26" ] && sed -i '/blapi\.h/d' programs/pluto/keys.c
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if [ "$SWAN_VER" = "3.31" ]; then
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sed -i '916iif (!st->st_seen_fragvid) { return FALSE; }' programs/pluto/ikev2.c
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sed -i '1033s/if (/if (LIN(POLICY_IKE_FRAG_ALLOW, sk->ike->sa.st_connection->policy) \&\& sk->ike->sa.st_seen_fragvid \&\& /' \
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programs/pluto/ikev2_message.c
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fi
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[ "$SWAN_VER" = "4.1" ] && sed -i 's/ sysv )/ sysvinit )/' programs/setup/setup.in
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cat > Makefile.inc.local <<'EOF'
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WERROR_CFLAGS=-w
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USE_DNSSEC=false
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EOF
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if [ "$SWAN_VER" = "3.31" ] || [ "$SWAN_VER" = "3.32" ] || [ "$SWAN_VER" = "4.1" ]; then
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echo "USE_DH2=true" >> Makefile.inc.local
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if ! grep -qs IFLA_XFRM_LINK /usr/include/linux/if_link.h; then
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echo "USE_XFRM_INTERFACE_IFLA_HEADER=true" >> Makefile.inc.local
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fi
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fi
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if [ "$SWAN_VER" = "4.1" ]; then
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echo "USE_NSS_KDF=false" >> Makefile.inc.local
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echo "FINALNSSDIR=/etc/ipsec.d" >> Makefile.inc.local
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fi
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NPROCS=$(grep -c ^processor /proc/cpuinfo)
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[ -z "$NPROCS" ] && NPROCS=1
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make "-j$((NPROCS+1))" -s base && make -s install-base
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# Verify the install and clean up
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cd /opt/src || exit 1
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/bin/rm -rf "/opt/src/libreswan-$SWAN_VER"
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if ! /usr/local/sbin/ipsec --version 2>/dev/null | grep -qF "$SWAN_VER"; then
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exiterr "Libreswan $SWAN_VER failed to build."
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fi
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# Restore SELinux contexts
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restorecon /etc/ipsec.d/*db 2>/dev/null
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restorecon /usr/local/sbin -Rv 2>/dev/null
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restorecon /usr/local/libexec/ipsec -Rv 2>/dev/null
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# Update IPsec config
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IKE_NEW=" ike=aes256-sha2,aes128-sha2,aes256-sha1,aes128-sha1,aes256-sha2;modp1024,aes128-sha1;modp1024"
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PHASE2_NEW=" phase2alg=aes_gcm-null,aes128-sha1,aes256-sha1,aes256-sha2_512,aes128-sha2,aes256-sha2"
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dns_state=0
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DNS_SRV1=$(grep "modecfgdns1=" /etc/ipsec.conf | head -n 1 | cut -d '=' -f 2)
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DNS_SRV2=$(grep "modecfgdns2=" /etc/ipsec.conf | head -n 1 | cut -d '=' -f 2)
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[ -n "$DNS_SRV1" ] && dns_state=2
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[ -n "$DNS_SRV1" ] && [ -n "$DNS_SRV2" ] && dns_state=1
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[ "$(grep -c "modecfgdns1=" /etc/ipsec.conf)" -gt "1" ] && dns_state=3
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sed -i".old-$(date +%F-%T)" \
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-e "s/^[[:space:]]\+auth=/ phase2=/" \
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-e "s/^[[:space:]]\+forceencaps=/ encapsulation=/" \
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-e "s/^[[:space:]]\+ike-frag=/ fragmentation=/" \
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-e "s/^[[:space:]]\+sha2_truncbug=/ sha2-truncbug=/" \
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-e "s/^[[:space:]]\+sha2-truncbug=yes/ sha2-truncbug=no/" \
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-e "s/^[[:space:]]\+ike=.\+/$IKE_NEW/" \
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-e "s/^[[:space:]]\+phase2alg=.\+/$PHASE2_NEW/" /etc/ipsec.conf
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if [ "$dns_state" = "1" ]; then
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sed -i -e "s/^[[:space:]]\+modecfgdns1=.\+/ modecfgdns=\"$DNS_SRV1 $DNS_SRV2\"/" \
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-e "/modecfgdns2=/d" /etc/ipsec.conf
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elif [ "$dns_state" = "2" ]; then
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sed -i "s/^[[:space:]]\+modecfgdns1=.\+/ modecfgdns=$DNS_SRV1/" /etc/ipsec.conf
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fi
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case "$SWAN_VER" in
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3.29|3.3[12]|4.1)
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sed -i "/ikev2=never/d" /etc/ipsec.conf
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sed -i "/conn shared/a \ ikev2=never" /etc/ipsec.conf
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;;
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esac
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if grep -qs ike-frag /etc/ipsec.d/ikev2.conf; then
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sed -i 's/^[[:space:]]\+ike-frag=/ fragmentation=/' /etc/ipsec.d/ikev2.conf
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fi
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# Restart IPsec service
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mkdir -p /run/pluto
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service ipsec restart
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cat <<EOF
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================================================
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Libreswan $SWAN_VER has been successfully installed!
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================================================
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EOF
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if [ "$dns_state" = "3" ]; then
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cat <<'EOF'
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IMPORTANT: Users upgrading to Libreswan 3.23 or newer must edit /etc/ipsec.conf
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and replace all occurrences of these two lines:
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modecfgdns1=DNS_SERVER_1
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modecfgdns2=DNS_SERVER_2
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with a single line like this:
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modecfgdns="DNS_SERVER_1 DNS_SERVER_2"
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Then run "sudo service ipsec restart".
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EOF
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fi
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}
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## Defer setup until we have the complete script
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vpnupgrade "$@"
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exit 0
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457
vpnsetup_amzn.sh
Normal file
457
vpnsetup_amzn.sh
Normal file
@ -0,0 +1,457 @@
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#!/bin/sh
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#
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# Script for automatic setup of an IPsec VPN server on Amazon Linux 2.
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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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# 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) 2020 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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# =====================================================
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# Define your own values for these variables
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# - IPsec pre-shared key, VPN username and password
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# - All values MUST be placed inside 'single quotes'
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# - DO NOT use these special characters within values: \ " '
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YOUR_IPSEC_PSK=''
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YOUR_USERNAME=''
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YOUR_PASSWORD=''
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# Important notes: https://git.io/vpnnotes
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# Setup VPN clients: https://git.io/vpnclients
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# IKEv2 guide: https://git.io/ikev2
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# =====================================================
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export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
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SYS_DT=$(date +%F-%T | tr ':' '_')
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exiterr() { echo "Error: $1" >&2; exit 1; }
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exiterr2() { exiterr "'yum install' failed."; }
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conf_bk() { /bin/cp -f "$1" "$1.old-$SYS_DT" 2>/dev/null; }
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bigecho() { echo; echo "## $1"; echo; }
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check_ip() {
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IP_REGEX='^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$'
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printf '%s' "$1" | tr -d '\n' | grep -Eq "$IP_REGEX"
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}
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vpnsetup() {
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if ! grep -qs "Amazon Linux release 2" /etc/system-release; then
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echo "Error: This script only supports Amazon Linux 2." >&2
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echo "For Ubuntu/Debian, use https://git.io/vpnsetup" >&2
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echo "For CentOS/RHEL, use https://git.io/vpnsetup-centos" >&2
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exit 1
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fi
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if [ "$(id -u)" != 0 ]; then
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exiterr "Script must be run as root. Try 'sudo sh $0'"
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fi
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def_iface=$(route 2>/dev/null | grep -m 1 '^default' | grep -o '[^ ]*$')
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[ -z "$def_iface" ] && def_iface=$(ip -4 route list 0/0 2>/dev/null | grep -m 1 -Po '(?<=dev )(\S+)')
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def_state=$(cat "/sys/class/net/$def_iface/operstate" 2>/dev/null)
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if [ -n "$def_state" ] && [ "$def_state" != "down" ]; then
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case "$def_iface" in
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wl*)
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exiterr "Wireless interface '$def_iface' detected. DO NOT run this script on your PC or Mac!"
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;;
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esac
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NET_IFACE="$def_iface"
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else
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eth0_state=$(cat "/sys/class/net/eth0/operstate" 2>/dev/null)
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if [ -z "$eth0_state" ] || [ "$eth0_state" = "down" ]; then
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exiterr "Could not detect the default network interface."
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fi
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NET_IFACE=eth0
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fi
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[ -n "$YOUR_IPSEC_PSK" ] && VPN_IPSEC_PSK="$YOUR_IPSEC_PSK"
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[ -n "$YOUR_USERNAME" ] && VPN_USER="$YOUR_USERNAME"
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[ -n "$YOUR_PASSWORD" ] && VPN_PASSWORD="$YOUR_PASSWORD"
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if [ -z "$VPN_IPSEC_PSK" ] && [ -z "$VPN_USER" ] && [ -z "$VPN_PASSWORD" ]; then
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bigecho "VPN credentials not set by user. Generating random PSK and password..."
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VPN_IPSEC_PSK=$(LC_CTYPE=C tr -dc 'A-HJ-NPR-Za-km-z2-9' < /dev/urandom | head -c 20)
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VPN_USER=vpnuser
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VPN_PASSWORD=$(LC_CTYPE=C tr -dc 'A-HJ-NPR-Za-km-z2-9' < /dev/urandom | head -c 16)
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fi
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if [ -z "$VPN_IPSEC_PSK" ] || [ -z "$VPN_USER" ] || [ -z "$VPN_PASSWORD" ]; then
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exiterr "All VPN credentials must be specified. Edit the script and re-enter them."
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fi
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if printf '%s' "$VPN_IPSEC_PSK $VPN_USER $VPN_PASSWORD" | LC_ALL=C grep -q '[^ -~]\+'; then
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exiterr "VPN credentials must not contain non-ASCII characters."
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fi
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case "$VPN_IPSEC_PSK $VPN_USER $VPN_PASSWORD" in
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*[\\\"\']*)
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exiterr "VPN credentials must not contain these special characters: \\ \" '"
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;;
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esac
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if { [ -n "$VPN_DNS_SRV1" ] && ! check_ip "$VPN_DNS_SRV1"; } \
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|| { [ -n "$VPN_DNS_SRV2" ] && ! check_ip "$VPN_DNS_SRV2"; } then
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exiterr "The DNS server specified is invalid."
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fi
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bigecho "VPN setup in progress... Please be patient."
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# Create and change to working dir
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mkdir -p /opt/src
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cd /opt/src || exit 1
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bigecho "Installing packages required for setup..."
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yum -y install wget bind-utils openssl tar \
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iptables iproute gawk grep sed net-tools || exiterr2
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bigecho "Trying to auto discover IP of this server..."
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cat <<'EOF'
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In case the script hangs here for more than a few minutes,
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press Ctrl-C to abort. Then edit it and manually enter IP.
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EOF
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# In case auto IP discovery fails, enter server's public IP here.
|
||||
PUBLIC_IP=${VPN_PUBLIC_IP:-''}
|
||||
|
||||
[ -z "$PUBLIC_IP" ] && PUBLIC_IP=$(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 "$PUBLIC_IP" || exiterr "Cannot detect this server's public IP. Edit the script and manually enter it."
|
||||
|
||||
bigecho "Adding the EPEL repository..."
|
||||
|
||||
amazon-linux-extras install epel -y || exiterr2
|
||||
|
||||
bigecho "Installing packages required for the VPN..."
|
||||
|
||||
REPO1='--enablerepo=epel'
|
||||
|
||||
yum -y install nss-devel nspr-devel pkgconfig pam-devel \
|
||||
libcap-ng-devel libselinux-devel curl-devel nss-tools \
|
||||
flex bison gcc make ppp \
|
||||
systemd-devel iptables-services \
|
||||
libevent-devel fipscheck-devel || exiterr2
|
||||
|
||||
yum "$REPO1" -y install xl2tpd || exiterr2
|
||||
|
||||
bigecho "Installing Fail2Ban to protect SSH..."
|
||||
|
||||
yum "$REPO1" -y install fail2ban || exiterr2
|
||||
|
||||
bigecho "Compiling and installing Libreswan..."
|
||||
|
||||
SWAN_VER=4.1
|
||||
swan_file="libreswan-$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"
|
||||
if ! { wget -t 3 -T 30 -nv -O "$swan_file" "$swan_url1" || wget -t 3 -T 30 -nv -O "$swan_file" "$swan_url2"; }; then
|
||||
exit 1
|
||||
fi
|
||||
/bin/rm -rf "/opt/src/libreswan-$SWAN_VER"
|
||||
tar xzf "$swan_file" && /bin/rm -f "$swan_file"
|
||||
cd "libreswan-$SWAN_VER" || exit 1
|
||||
sed -i 's/ sysv )/ sysvinit )/' programs/setup/setup.in
|
||||
cat > Makefile.inc.local <<'EOF'
|
||||
WERROR_CFLAGS=-w
|
||||
USE_DNSSEC=false
|
||||
USE_DH2=true
|
||||
USE_NSS_KDF=false
|
||||
FINALNSSDIR=/etc/ipsec.d
|
||||
EOF
|
||||
if ! grep -qs IFLA_XFRM_LINK /usr/include/linux/if_link.h; then
|
||||
echo "USE_XFRM_INTERFACE_IFLA_HEADER=true" >> Makefile.inc.local
|
||||
fi
|
||||
NPROCS=$(grep -c ^processor /proc/cpuinfo)
|
||||
[ -z "$NPROCS" ] && NPROCS=1
|
||||
make "-j$((NPROCS+1))" -s base && make -s install-base
|
||||
|
||||
cd /opt/src || exit 1
|
||||
/bin/rm -rf "/opt/src/libreswan-$SWAN_VER"
|
||||
if ! /usr/local/sbin/ipsec --version 2>/dev/null | grep -qF "$SWAN_VER"; then
|
||||
exiterr "Libreswan $SWAN_VER failed to build."
|
||||
fi
|
||||
|
||||
bigecho "Creating VPN configuration..."
|
||||
|
||||
L2TP_NET=${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
|
||||
protostack=netkey
|
||||
interfaces=%defaultroute
|
||||
uniqueids=no
|
||||
|
||||
conn shared
|
||||
left=%defaultroute
|
||||
leftid=$PUBLIC_IP
|
||||
right=%any
|
||||
encapsulation=yes
|
||||
authby=secret
|
||||
pfs=no
|
||||
rekey=no
|
||||
keyingtries=5
|
||||
dpddelay=30
|
||||
dpdtimeout=120
|
||||
dpdaction=clear
|
||||
ikev2=never
|
||||
ike=aes256-sha2,aes128-sha2,aes256-sha1,aes128-sha1,aes256-sha2;modp1024,aes128-sha1;modp1024
|
||||
phase2alg=aes_gcm-null,aes128-sha1,aes256-sha1,aes256-sha2_512,aes128-sha2,aes256-sha2
|
||||
sha2-truncbug=no
|
||||
|
||||
conn l2tp-psk
|
||||
auto=add
|
||||
leftprotoport=17/1701
|
||||
rightprotoport=17/%any
|
||||
type=transport
|
||||
phase2=esp
|
||||
also=shared
|
||||
|
||||
conn xauth-psk
|
||||
auto=add
|
||||
leftsubnet=0.0.0.0/0
|
||||
rightaddresspool=$XAUTH_POOL
|
||||
modecfgdns=$DNS_SRVS
|
||||
leftxauthserver=yes
|
||||
rightxauthclient=yes
|
||||
leftmodecfgserver=yes
|
||||
rightmodecfgclient=yes
|
||||
modecfgpull=yes
|
||||
xauthby=file
|
||||
fragmentation=yes
|
||||
cisco-unity=yes
|
||||
also=shared
|
||||
|
||||
include /etc/ipsec.d/*.conf
|
||||
EOF
|
||||
|
||||
# Specify IPsec PSK
|
||||
conf_bk "/etc/ipsec.secrets"
|
||||
cat > /etc/ipsec.secrets <<EOF
|
||||
%any %any : PSK "$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
|
||||
|
||||
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
|
||||
|
||||
F2B_FILE=/etc/fail2ban/jail.local
|
||||
if [ ! -f "$F2B_FILE" ]; then
|
||||
bigecho "Creating basic Fail2Ban rules..."
|
||||
cat > "$F2B_FILE" <<'EOF'
|
||||
[ssh-iptables]
|
||||
enabled = true
|
||||
filter = sshd
|
||||
logpath = /var/log/secure
|
||||
action = iptables[name=SSH, port=ssh, protocol=tcp]
|
||||
EOF
|
||||
fi
|
||||
|
||||
bigecho "Updating IPTables rules..."
|
||||
|
||||
IPT_FILE=/etc/sysconfig/iptables
|
||||
ipt_flag=0
|
||||
if ! grep -qs "hwdsl2 VPN script" "$IPT_FILE"; then
|
||||
ipt_flag=1
|
||||
fi
|
||||
|
||||
if [ "$ipt_flag" = "1" ]; then
|
||||
service fail2ban stop >/dev/null 2>&1
|
||||
iptables-save > "$IPT_FILE.old-$SYS_DT"
|
||||
iptables -I INPUT 1 -p udp --dport 1701 -m policy --dir in --pol none -j DROP
|
||||
iptables -I INPUT 2 -m conntrack --ctstate INVALID -j DROP
|
||||
iptables -I INPUT 3 -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
|
||||
iptables -I INPUT 4 -p udp -m multiport --dports 500,4500 -j ACCEPT
|
||||
iptables -I INPUT 5 -p udp --dport 1701 -m policy --dir in --pol ipsec -j ACCEPT
|
||||
iptables -I INPUT 6 -p udp --dport 1701 -j DROP
|
||||
iptables -I FORWARD 1 -m conntrack --ctstate INVALID -j DROP
|
||||
iptables -I FORWARD 2 -i "$NET_IFACE" -o ppp+ -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
|
||||
iptables -I FORWARD 3 -i ppp+ -o "$NET_IFACE" -j ACCEPT
|
||||
iptables -I FORWARD 4 -i ppp+ -o ppp+ -s "$L2TP_NET" -d "$L2TP_NET" -j ACCEPT
|
||||
iptables -I FORWARD 5 -i "$NET_IFACE" -d "$XAUTH_NET" -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
|
||||
iptables -I FORWARD 6 -s "$XAUTH_NET" -o "$NET_IFACE" -j ACCEPT
|
||||
# Uncomment to disallow traffic between VPN clients
|
||||
# iptables -I FORWARD 2 -i ppp+ -o ppp+ -s "$L2TP_NET" -d "$L2TP_NET" -j DROP
|
||||
# iptables -I FORWARD 3 -s "$XAUTH_NET" -d "$XAUTH_NET" -j DROP
|
||||
iptables -t nat -I POSTROUTING -s "$XAUTH_NET" -o "$NET_IFACE" -m policy --dir out --pol none -j MASQUERADE
|
||||
iptables -t nat -I POSTROUTING -s "$L2TP_NET" -o "$NET_IFACE" -j MASQUERADE
|
||||
echo "# Modified by hwdsl2 VPN script" > "$IPT_FILE"
|
||||
iptables -A FORWARD -j DROP
|
||||
iptables-save >> "$IPT_FILE"
|
||||
fi
|
||||
|
||||
bigecho "Enabling services on boot..."
|
||||
|
||||
systemctl --now mask firewalld 2>/dev/null
|
||||
systemctl enable iptables fail2ban 2>/dev/null
|
||||
|
||||
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
|
||||
|
||||
bigecho "Starting services..."
|
||||
|
||||
restorecon /etc/ipsec.d/*db 2>/dev/null
|
||||
restorecon /usr/local/sbin -Rv 2>/dev/null
|
||||
restorecon /usr/local/libexec/ipsec -Rv 2>/dev/null
|
||||
|
||||
sysctl -e -q -p
|
||||
|
||||
chmod +x /etc/rc.local
|
||||
chmod 600 /etc/ipsec.secrets* /etc/ppp/chap-secrets* /etc/ipsec.d/passwd*
|
||||
|
||||
iptables-restore < "$IPT_FILE"
|
||||
|
||||
# Fix xl2tpd if l2tp_ppp is unavailable
|
||||
if ! modprobe -q l2tp_ppp; then
|
||||
sed -i '/^ExecStartPre=\//s/=/=-/' /usr/lib/systemd/system/xl2tpd.service
|
||||
systemctl daemon-reload
|
||||
fi
|
||||
|
||||
mkdir -p /run/pluto
|
||||
service fail2ban restart 2>/dev/null
|
||||
service ipsec restart 2>/dev/null
|
||||
service xl2tpd restart 2>/dev/null
|
||||
|
||||
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: $VPN_PASSWORD
|
||||
|
||||
Write these down. You'll need them to connect!
|
||||
|
||||
Important notes: https://git.io/vpnnotes
|
||||
Setup VPN clients: https://git.io/vpnclients
|
||||
IKEv2 guide: https://git.io/ikev2
|
||||
|
||||
================================================
|
||||
|
||||
EOF
|
||||
|
||||
}
|
||||
|
||||
## Defer setup until we have the complete script
|
||||
vpnsetup "$@"
|
||||
|
||||
exit 0
|
||||
Loading…
Reference in New Issue
Block a user