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Improve VPN setup

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- Refactor VPN setup scripts into functions
- Cleanup
This commit is contained in:
hwdsl2 2021-08-19 02:01:34 -05:00
parent fc33e1c451
commit 9336c1c2c2
3 changed files with 1061 additions and 859 deletions
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158
vpnsetup_amzn.sh
View File

@ -46,17 +46,20 @@ check_ip() {
printf '%s' "$1" | tr -d '\n' | grep -Eq "$IP_REGEX" printf '%s' "$1" | tr -d '\n' | grep -Eq "$IP_REGEX"
} }
vpnsetup() { check_root() {
if [ "$(id -u)" != 0 ]; then
exiterr "Script must be run as root. Try 'sudo sh $0'"
fi
}
check_os() {
os_arch=$(uname -m | tr -dc 'A-Za-z0-9_-') os_arch=$(uname -m | tr -dc 'A-Za-z0-9_-')
if ! grep -qs "Amazon Linux release 2" /etc/system-release; then if ! grep -qs "Amazon Linux release 2" /etc/system-release; then
exiterr "This script only supports Amazon Linux 2." exiterr "This script only supports Amazon Linux 2."
fi fi
}
if [ "$(id -u)" != 0 ]; then check_iface() {
exiterr "Script must be run as root. Try 'sudo sh $0'"
fi
def_iface=$(route 2>/dev/null | grep -m 1 '^default' | grep -o '[^ ]*$') def_iface=$(route 2>/dev/null | grep -m 1 '^default' | grep -o '[^ ]*$')
[ -z "$def_iface" ] && def_iface=$(ip -4 route list 0/0 2>/dev/null | grep -m 1 -Po '(?<=dev )(\S+)') [ -z "$def_iface" ] && def_iface=$(ip -4 route list 0/0 2>/dev/null | grep -m 1 -Po '(?<=dev )(\S+)')
def_state=$(cat "/sys/class/net/$def_iface/operstate" 2>/dev/null) def_state=$(cat "/sys/class/net/$def_iface/operstate" 2>/dev/null)
@ -74,7 +77,9 @@ else
fi fi
NET_IFACE=eth0 NET_IFACE=eth0
fi fi
}
check_creds() {
[ -n "$YOUR_IPSEC_PSK" ] && VPN_IPSEC_PSK="$YOUR_IPSEC_PSK" [ -n "$YOUR_IPSEC_PSK" ] && VPN_IPSEC_PSK="$YOUR_IPSEC_PSK"
[ -n "$YOUR_USERNAME" ] && VPN_USER="$YOUR_USERNAME" [ -n "$YOUR_USERNAME" ] && VPN_USER="$YOUR_USERNAME"
[ -n "$YOUR_PASSWORD" ] && VPN_PASSWORD="$YOUR_PASSWORD" [ -n "$YOUR_PASSWORD" ] && VPN_PASSWORD="$YOUR_PASSWORD"
@ -99,41 +104,51 @@ case "$VPN_IPSEC_PSK $VPN_USER $VPN_PASSWORD" in
exiterr "VPN credentials must not contain these special characters: \\ \" '" exiterr "VPN credentials must not contain these special characters: \\ \" '"
;; ;;
esac esac
}
check_dns() {
if { [ -n "$VPN_DNS_SRV1" ] && ! check_ip "$VPN_DNS_SRV1"; } \ if { [ -n "$VPN_DNS_SRV1" ] && ! check_ip "$VPN_DNS_SRV1"; } \
|| { [ -n "$VPN_DNS_SRV2" ] && ! check_ip "$VPN_DNS_SRV2"; } then || { [ -n "$VPN_DNS_SRV2" ] && ! check_ip "$VPN_DNS_SRV2"; } then
exiterr "The DNS server specified is invalid." exiterr "The DNS server specified is invalid."
fi fi
}
# shellcheck disable=SC2154,SC2039,SC3047
start_setup() {
bigecho "VPN setup in progress... Please be patient." bigecho "VPN setup in progress... Please be patient."
trap 'dlo=$dl;dl=$LINENO' DEBUG 2>/dev/null
trap 'finish $? $((dlo+1))' EXIT
mkdir -p /opt/src mkdir -p /opt/src
cd /opt/src || exit 1 cd /opt/src || exit 1
}
install_setup_pkgs() {
bigecho "Installing packages required for setup..." bigecho "Installing packages required for setup..."
( (
set -x set -x
yum -y -q install wget bind-utils openssl tar \ yum -y -q install wget bind-utils openssl tar \
iptables iproute gawk grep sed net-tools >/dev/null iptables iproute gawk grep sed net-tools >/dev/null
) || exiterr2 ) || exiterr2
}
detect_ip() {
bigecho "Trying to auto discover IP of this server..." bigecho "Trying to auto discover IP of this server..."
public_ip=${VPN_PUBLIC_IP:-''} 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=$(dig @resolver1.opendns.com -t A -4 myip.opendns.com +short)
check_ip "$public_ip" || public_ip=$(wget -t 3 -T 15 -qO- http://ipv4.icanhazip.com) check_ip "$public_ip" || 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." check_ip "$public_ip" || exiterr "Cannot detect this server's public IP. Define it as variable 'VPN_PUBLIC_IP' and re-run this script."
}
add_epel_repo() {
bigecho "Adding the EPEL repository..." bigecho "Adding the EPEL repository..."
( (
set -x set -x
amazon-linux-extras install epel -y >/dev/null amazon-linux-extras install epel -y >/dev/null
) || exiterr2 ) || exiterr2
}
install_vpn_pkgs_1() {
bigecho "Installing packages required for the VPN..." bigecho "Installing packages required for the VPN..."
( (
set -x set -x
yum -y -q install nss-devel nspr-devel pkgconfig pam-devel \ yum -y -q install nss-devel nspr-devel pkgconfig pam-devel \
@ -142,29 +157,35 @@ bigecho "Installing packages required for the VPN..."
systemd-devel iptables-services \ systemd-devel iptables-services \
libevent-devel fipscheck-devel >/dev/null libevent-devel fipscheck-devel >/dev/null
) || exiterr2 ) || exiterr2
}
install_vpn_pkgs_2() {
( (
set -x set -x
yum --enablerepo=epel -y -q install xl2tpd >/dev/null 2>&1 yum --enablerepo=epel -y -q install xl2tpd >/dev/null 2>&1
) || exiterr2 ) || exiterr2
}
install_fail2ban() {
bigecho "Installing Fail2Ban to protect SSH..." bigecho "Installing Fail2Ban to protect SSH..."
( (
set -x set -x
yum --enablerepo=epel -y -q install fail2ban >/dev/null yum --enablerepo=epel -y -q install fail2ban >/dev/null
) || exiterr2 ) || exiterr2
}
get_ikev2_script() {
bigecho "Downloading IKEv2 script..." bigecho "Downloading IKEv2 script..."
ikev2_url="https://github.com/hwdsl2/setup-ipsec-vpn/raw/master/extras/ikev2setup.sh" ikev2_url="https://github.com/hwdsl2/setup-ipsec-vpn/raw/master/extras/ikev2setup.sh"
( (
set -x set -x
wget -t 3 -T 30 -q -O ikev2.sh "$ikev2_url" wget -t 3 -T 30 -q -O ikev2.sh "$ikev2_url"
) || /bin/rm -f ikev2.sh ) || /bin/rm -f ikev2.sh
[ -s ikev2.sh ] && chmod +x ikev2.sh && ln -s /opt/src/ikev2.sh /usr/bin 2>/dev/null [ -s ikev2.sh ] && chmod +x ikev2.sh && ln -s /opt/src/ikev2.sh /usr/bin 2>/dev/null
}
get_libreswan() {
bigecho "Downloading Libreswan..." bigecho "Downloading Libreswan..."
SWAN_VER=4.4 SWAN_VER=4.4
swan_file="libreswan-$SWAN_VER.tar.gz" swan_file="libreswan-$SWAN_VER.tar.gz"
swan_url1="https://github.com/libreswan/libreswan/archive/v$SWAN_VER.tar.gz" swan_url1="https://github.com/libreswan/libreswan/archive/v$SWAN_VER.tar.gz"
@ -175,9 +196,10 @@ swan_url2="https://download.libreswan.org/$swan_file"
) || exit 1 ) || exit 1
/bin/rm -rf "/opt/src/libreswan-$SWAN_VER" /bin/rm -rf "/opt/src/libreswan-$SWAN_VER"
tar xzf "$swan_file" && /bin/rm -f "$swan_file" tar xzf "$swan_file" && /bin/rm -f "$swan_file"
}
install_libreswan() {
bigecho "Compiling and installing Libreswan, please wait..." bigecho "Compiling and installing Libreswan, please wait..."
cd "libreswan-$SWAN_VER" || exit 1 cd "libreswan-$SWAN_VER" || exit 1
cat > Makefile.inc.local <<'EOF' cat > Makefile.inc.local <<'EOF'
WERROR_CFLAGS=-w -s WERROR_CFLAGS=-w -s
@ -201,7 +223,9 @@ cd /opt/src || exit 1
if ! /usr/local/sbin/ipsec --version 2>/dev/null | grep -qF "$SWAN_VER"; then if ! /usr/local/sbin/ipsec --version 2>/dev/null | grep -qF "$SWAN_VER"; then
exiterr "Libreswan $SWAN_VER failed to build." exiterr "Libreswan $SWAN_VER failed to build."
fi fi
}
create_vpn_config() {
bigecho "Creating VPN configuration..." bigecho "Creating VPN configuration..."
L2TP_NET=${VPN_L2TP_NET:-'192.168.42.0/24'} L2TP_NET=${VPN_L2TP_NET:-'192.168.42.0/24'}
@ -322,9 +346,24 @@ VPN_PASSWORD_ENC=$(openssl passwd -1 "$VPN_PASSWORD")
cat > /etc/ipsec.d/passwd <<EOF cat > /etc/ipsec.d/passwd <<EOF
$VPN_USER:$VPN_PASSWORD_ENC:xauth-psk $VPN_USER:$VPN_PASSWORD_ENC:xauth-psk
EOF EOF
}
create_f2b_config() {
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
}
update_sysctl() {
bigecho "Updating sysctl settings..." bigecho "Updating sysctl settings..."
if ! grep -qs "hwdsl2 VPN script" /etc/sysctl.conf; then if ! grep -qs "hwdsl2 VPN script" /etc/sysctl.conf; then
conf_bk "/etc/sysctl.conf" conf_bk "/etc/sysctl.conf"
cat >> /etc/sysctl.conf <<EOF cat >> /etc/sysctl.conf <<EOF
@ -349,21 +388,10 @@ net.ipv4.tcp_rmem = 10240 87380 12582912
net.ipv4.tcp_wmem = 10240 87380 12582912 net.ipv4.tcp_wmem = 10240 87380 12582912
EOF EOF
fi fi
}
F2B_FILE=/etc/fail2ban/jail.local update_iptables() {
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..." bigecho "Updating IPTables rules..."
IPT_FILE=/etc/sysconfig/iptables IPT_FILE=/etc/sysconfig/iptables
ipt_flag=0 ipt_flag=0
if ! grep -qs "hwdsl2 VPN script" "$IPT_FILE"; then if ! grep -qs "hwdsl2 VPN script" "$IPT_FILE"; then
@ -396,9 +424,10 @@ if [ "$ipt_flag" = "1" ]; then
echo "# Modified by hwdsl2 VPN script" > "$IPT_FILE" echo "# Modified by hwdsl2 VPN script" > "$IPT_FILE"
iptables-save >> "$IPT_FILE" iptables-save >> "$IPT_FILE"
fi fi
}
enable_on_boot() {
bigecho "Enabling services on boot..." bigecho "Enabling services on boot..."
systemctl --now mask firewalld 2>/dev/null systemctl --now mask firewalld 2>/dev/null
systemctl enable iptables fail2ban 2>/dev/null systemctl enable iptables fail2ban 2>/dev/null
@ -417,18 +446,19 @@ service xl2tpd restart
echo 1 > /proc/sys/net/ipv4/ip_forward)& echo 1 > /proc/sys/net/ipv4/ip_forward)&
EOF EOF
fi fi
}
start_services() {
bigecho "Starting services..." bigecho "Starting services..."
restorecon /etc/ipsec.d/*db 2>/dev/null
restorecon /usr/local/sbin -Rv 2>/dev/null
restorecon /usr/local/libexec/ipsec -Rv 2>/dev/null
sysctl -e -q -p sysctl -e -q -p
chmod +x /etc/rc.local chmod +x /etc/rc.local
chmod 600 /etc/ipsec.secrets* /etc/ppp/chap-secrets* /etc/ipsec.d/passwd* chmod 600 /etc/ipsec.secrets* /etc/ppp/chap-secrets* /etc/ipsec.d/passwd*
restorecon /etc/ipsec.d/*db 2>/dev/null
restorecon /usr/local/sbin -Rv 2>/dev/null
restorecon /usr/local/libexec/ipsec -Rv 2>/dev/null
iptables-restore < "$IPT_FILE" iptables-restore < "$IPT_FILE"
# Fix xl2tpd if l2tp_ppp is unavailable # Fix xl2tpd if l2tp_ppp is unavailable
@ -441,20 +471,9 @@ mkdir -p /run/pluto
service fail2ban restart 2>/dev/null service fail2ban restart 2>/dev/null
service ipsec restart 2>/dev/null service ipsec restart 2>/dev/null
service xl2tpd restart 2>/dev/null service xl2tpd restart 2>/dev/null
}
swan_ver_url="https://dl.ls20.com/v1/amzn/2/swanver?arch=$os_arch&ver=$SWAN_VER" show_vpn_info() {
swan_ver_latest=$(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}$' \
&& [ -n "$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 ($swan_ver_latest) is available.
To update, run:
wget https://git.io/vpnupgrade -O vpnup.sh && sudo sh vpnup.sh
EOF
fi
cat <<EOF cat <<EOF
================================================ ================================================
@ -477,7 +496,52 @@ IKEv2 guide: https://git.io/ikev2
================================================ ================================================
EOF EOF
}
check_swan_ver() {
swan_ver_url="https://dl.ls20.com/v1/amzn/2/swanver?arch=$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_os
check_iface
check_creds
check_dns
start_setup
install_setup_pkgs
detect_ip
add_epel_repo
install_vpn_pkgs_1
install_vpn_pkgs_2
install_fail2ban
get_ikev2_script
get_libreswan
install_libreswan
create_vpn_config
create_f2b_config
update_sysctl
update_iptables
enable_on_boot
start_services
show_vpn_info
} }
## Defer setup until we have the complete script ## Defer setup until we have the complete script

192
vpnsetup_centos.sh
View File

@ -47,8 +47,19 @@ check_ip() {
printf '%s' "$1" | tr -d '\n' | grep -Eq "$IP_REGEX" printf '%s' "$1" | tr -d '\n' | grep -Eq "$IP_REGEX"
} }
vpnsetup() { check_root() {
if [ "$(id -u)" != 0 ]; then
exiterr "Script must be run as root. Try 'sudo sh $0'"
fi
}
check_vz() {
if [ -f /proc/user_beancounters ]; then
exiterr "OpenVZ VPS is not supported."
fi
}
check_os() {
os_type=centos os_type=centos
os_arch=$(uname -m | tr -dc 'A-Za-z0-9_-') os_arch=$(uname -m | tr -dc 'A-Za-z0-9_-')
rh_file="/etc/redhat-release" rh_file="/etc/redhat-release"
@ -65,15 +76,9 @@ elif grep -qs "release 8" "$rh_file"; then
else else
exiterr "This script only supports CentOS/RHEL 7 and 8." exiterr "This script only supports CentOS/RHEL 7 and 8."
fi fi
}
if [ -f /proc/user_beancounters ]; then check_iface() {
exiterr "OpenVZ VPS is not supported."
fi
if [ "$(id -u)" != 0 ]; then
exiterr "Script must be run as root. Try 'sudo sh $0'"
fi
def_iface=$(route 2>/dev/null | grep -m 1 '^default' | grep -o '[^ ]*$') def_iface=$(route 2>/dev/null | grep -m 1 '^default' | grep -o '[^ ]*$')
[ -z "$def_iface" ] && def_iface=$(ip -4 route list 0/0 2>/dev/null | grep -m 1 -Po '(?<=dev )(\S+)') [ -z "$def_iface" ] && def_iface=$(ip -4 route list 0/0 2>/dev/null | grep -m 1 -Po '(?<=dev )(\S+)')
def_state=$(cat "/sys/class/net/$def_iface/operstate" 2>/dev/null) def_state=$(cat "/sys/class/net/$def_iface/operstate" 2>/dev/null)
@ -91,7 +96,9 @@ else
fi fi
NET_IFACE=eth0 NET_IFACE=eth0
fi fi
}
check_creds() {
[ -n "$YOUR_IPSEC_PSK" ] && VPN_IPSEC_PSK="$YOUR_IPSEC_PSK" [ -n "$YOUR_IPSEC_PSK" ] && VPN_IPSEC_PSK="$YOUR_IPSEC_PSK"
[ -n "$YOUR_USERNAME" ] && VPN_USER="$YOUR_USERNAME" [ -n "$YOUR_USERNAME" ] && VPN_USER="$YOUR_USERNAME"
[ -n "$YOUR_PASSWORD" ] && VPN_PASSWORD="$YOUR_PASSWORD" [ -n "$YOUR_PASSWORD" ] && VPN_PASSWORD="$YOUR_PASSWORD"
@ -116,42 +123,52 @@ case "$VPN_IPSEC_PSK $VPN_USER $VPN_PASSWORD" in
exiterr "VPN credentials must not contain these special characters: \\ \" '" exiterr "VPN credentials must not contain these special characters: \\ \" '"
;; ;;
esac esac
}
check_dns() {
if { [ -n "$VPN_DNS_SRV1" ] && ! check_ip "$VPN_DNS_SRV1"; } \ if { [ -n "$VPN_DNS_SRV1" ] && ! check_ip "$VPN_DNS_SRV1"; } \
|| { [ -n "$VPN_DNS_SRV2" ] && ! check_ip "$VPN_DNS_SRV2"; } then || { [ -n "$VPN_DNS_SRV2" ] && ! check_ip "$VPN_DNS_SRV2"; } then
exiterr "The DNS server specified is invalid." exiterr "The DNS server specified is invalid."
fi fi
}
# shellcheck disable=SC2154,SC2039,SC3047
start_setup() {
bigecho "VPN setup in progress... Please be patient." bigecho "VPN setup in progress... Please be patient."
trap 'dlo=$dl;dl=$LINENO' DEBUG 2>/dev/null
trap 'finish $? $((dlo+1))' EXIT
mkdir -p /opt/src mkdir -p /opt/src
cd /opt/src || exit 1 cd /opt/src || exit 1
}
install_setup_pkgs() {
bigecho "Installing packages required for setup..." bigecho "Installing packages required for setup..."
( (
set -x set -x
yum -y -q install wget bind-utils openssl tar \ yum -y -q install wget bind-utils openssl tar \
iptables iproute gawk grep sed net-tools >/dev/null iptables iproute gawk grep sed net-tools >/dev/null
) || exiterr2 ) || exiterr2
}
detect_ip() {
bigecho "Trying to auto discover IP of this server..." bigecho "Trying to auto discover IP of this server..."
public_ip=${VPN_PUBLIC_IP:-''} 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=$(dig @resolver1.opendns.com -t A -4 myip.opendns.com +short)
check_ip "$public_ip" || public_ip=$(wget -t 3 -T 15 -qO- http://ipv4.icanhazip.com) check_ip "$public_ip" || 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." check_ip "$public_ip" || exiterr "Cannot detect this server's public IP. Define it as variable 'VPN_PUBLIC_IP' and re-run this script."
}
add_epel_repo() {
bigecho "Adding the EPEL repository..." bigecho "Adding the EPEL repository..."
epel_url="https://dl.fedoraproject.org/pub/epel/epel-release-latest-$(rpm -E '%{rhel}').noarch.rpm" epel_url="https://dl.fedoraproject.org/pub/epel/epel-release-latest-$(rpm -E '%{rhel}').noarch.rpm"
( (
set -x set -x
yum -y -q install epel-release >/dev/null 2>&1 || yum -y -q install "$epel_url" >/dev/null yum -y -q install epel-release >/dev/null 2>&1 || yum -y -q install "$epel_url" >/dev/null
) || exiterr2 ) || exiterr2
}
install_vpn_pkgs_1() {
bigecho "Installing packages required for the VPN..." bigecho "Installing packages required for the VPN..."
erp="--enablerepo" erp="--enablerepo"
rp1="$erp=epel" rp1="$erp=epel"
rp2="$erp=*server-*optional*" rp2="$erp=*server-*optional*"
@ -165,11 +182,16 @@ rp4="$erp=[Pp]ower[Tt]ools"
libcap-ng-devel libselinux-devel curl-devel nss-tools \ libcap-ng-devel libselinux-devel curl-devel nss-tools \
flex bison gcc make util-linux ppp >/dev/null flex bison gcc make util-linux ppp >/dev/null
) || exiterr2 ) || exiterr2
}
install_vpn_pkgs_2() {
( (
set -x set -x
yum "$rp1" -y -q install xl2tpd >/dev/null 2>&1 yum "$rp1" -y -q install xl2tpd >/dev/null 2>&1
) || exiterr2 ) || exiterr2
}
install_vpn_pkgs_3() {
use_nft=0 use_nft=0
p1=systemd-devel p1=systemd-devel
p2=libevent-devel p2=libevent-devel
@ -196,25 +218,28 @@ else
yum -y -q install $p4 >/dev/null yum -y -q install $p4 >/dev/null
) || exiterr2 ) || exiterr2
fi fi
}
install_fail2ban() {
bigecho "Installing Fail2Ban to protect SSH..." bigecho "Installing Fail2Ban to protect SSH..."
( (
set -x set -x
yum "$rp1" -y -q install fail2ban >/dev/null yum "$rp1" -y -q install fail2ban >/dev/null
) || exiterr2 ) || exiterr2
}
get_ikev2_script() {
bigecho "Downloading IKEv2 script..." bigecho "Downloading IKEv2 script..."
ikev2_url="https://github.com/hwdsl2/setup-ipsec-vpn/raw/master/extras/ikev2setup.sh" ikev2_url="https://github.com/hwdsl2/setup-ipsec-vpn/raw/master/extras/ikev2setup.sh"
( (
set -x set -x
wget -t 3 -T 30 -q -O ikev2.sh "$ikev2_url" wget -t 3 -T 30 -q -O ikev2.sh "$ikev2_url"
) || /bin/rm -f ikev2.sh ) || /bin/rm -f ikev2.sh
[ -s ikev2.sh ] && chmod +x ikev2.sh && ln -s /opt/src/ikev2.sh /usr/bin 2>/dev/null [ -s ikev2.sh ] && chmod +x ikev2.sh && ln -s /opt/src/ikev2.sh /usr/bin 2>/dev/null
}
get_libreswan() {
bigecho "Downloading Libreswan..." bigecho "Downloading Libreswan..."
SWAN_VER=4.4 SWAN_VER=4.4
swan_file="libreswan-$SWAN_VER.tar.gz" swan_file="libreswan-$SWAN_VER.tar.gz"
swan_url1="https://github.com/libreswan/libreswan/archive/v$SWAN_VER.tar.gz" swan_url1="https://github.com/libreswan/libreswan/archive/v$SWAN_VER.tar.gz"
@ -225,9 +250,10 @@ swan_url2="https://download.libreswan.org/$swan_file"
) || exit 1 ) || exit 1
/bin/rm -rf "/opt/src/libreswan-$SWAN_VER" /bin/rm -rf "/opt/src/libreswan-$SWAN_VER"
tar xzf "$swan_file" && /bin/rm -f "$swan_file" tar xzf "$swan_file" && /bin/rm -f "$swan_file"
}
install_libreswan() {
bigecho "Compiling and installing Libreswan, please wait..." bigecho "Compiling and installing Libreswan, please wait..."
cd "libreswan-$SWAN_VER" || exit 1 cd "libreswan-$SWAN_VER" || exit 1
cat > Makefile.inc.local <<'EOF' cat > Makefile.inc.local <<'EOF'
WERROR_CFLAGS=-w -s WERROR_CFLAGS=-w -s
@ -251,7 +277,9 @@ cd /opt/src || exit 1
if ! /usr/local/sbin/ipsec --version 2>/dev/null | grep -qF "$SWAN_VER"; then if ! /usr/local/sbin/ipsec --version 2>/dev/null | grep -qF "$SWAN_VER"; then
exiterr "Libreswan $SWAN_VER failed to build." exiterr "Libreswan $SWAN_VER failed to build."
fi fi
}
create_vpn_config() {
bigecho "Creating VPN configuration..." bigecho "Creating VPN configuration..."
L2TP_NET=${VPN_L2TP_NET:-'192.168.42.0/24'} L2TP_NET=${VPN_L2TP_NET:-'192.168.42.0/24'}
@ -372,9 +400,34 @@ VPN_PASSWORD_ENC=$(openssl passwd -1 "$VPN_PASSWORD")
cat > /etc/ipsec.d/passwd <<EOF cat > /etc/ipsec.d/passwd <<EOF
$VPN_USER:$VPN_PASSWORD_ENC:xauth-psk $VPN_USER:$VPN_PASSWORD_ENC:xauth-psk
EOF EOF
}
create_f2b_config() {
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
EOF
if [ "$use_nft" = "1" ]; then
cat >> "$F2B_FILE" <<'EOF'
port = ssh
banaction = nftables-multiport[blocktype=drop]
EOF
else
cat >> "$F2B_FILE" <<'EOF'
action = iptables[name=SSH, port=ssh, protocol=tcp]
EOF
fi
fi
}
update_sysctl() {
bigecho "Updating sysctl settings..." bigecho "Updating sysctl settings..."
if ! grep -qs "hwdsl2 VPN script" /etc/sysctl.conf; then if ! grep -qs "hwdsl2 VPN script" /etc/sysctl.conf; then
conf_bk "/etc/sysctl.conf" conf_bk "/etc/sysctl.conf"
cat >> /etc/sysctl.conf <<EOF cat >> /etc/sysctl.conf <<EOF
@ -399,31 +452,10 @@ net.ipv4.tcp_rmem = 10240 87380 12582912
net.ipv4.tcp_wmem = 10240 87380 12582912 net.ipv4.tcp_wmem = 10240 87380 12582912
EOF EOF
fi fi
}
F2B_FILE=/etc/fail2ban/jail.local update_iptables() {
if [ ! -f "$F2B_FILE" ]; then
bigecho "Creating basic Fail2Ban rules..."
cat > "$F2B_FILE" <<'EOF'
[ssh-iptables]
enabled = true
filter = sshd
logpath = /var/log/secure
EOF
if [ "$use_nft" = "1" ]; then
cat >> "$F2B_FILE" <<'EOF'
port = ssh
banaction = nftables-multiport[blocktype=drop]
EOF
else
cat >> "$F2B_FILE" <<'EOF'
action = iptables[name=SSH, port=ssh, protocol=tcp]
EOF
fi
fi
bigecho "Updating IPTables rules..." bigecho "Updating IPTables rules..."
IPT_FILE=/etc/sysconfig/iptables IPT_FILE=/etc/sysconfig/iptables
[ "$use_nft" = "1" ] && IPT_FILE=/etc/sysconfig/nftables.conf [ "$use_nft" = "1" ] && IPT_FILE=/etc/sysconfig/nftables.conf
ipt_flag=0 ipt_flag=0
@ -479,9 +511,10 @@ if [ "$ipt_flag" = "1" ]; then
iptables-save >> "$IPT_FILE" iptables-save >> "$IPT_FILE"
fi fi
fi fi
}
enable_on_boot() {
bigecho "Enabling services on boot..." bigecho "Enabling services on boot..."
systemctl --now mask firewalld 2>/dev/null systemctl --now mask firewalld 2>/dev/null
if [ "$use_nft" = "1" ]; then if [ "$use_nft" = "1" ]; then
systemctl enable nftables fail2ban 2>/dev/null systemctl enable nftables fail2ban 2>/dev/null
@ -504,18 +537,19 @@ service xl2tpd restart
echo 1 > /proc/sys/net/ipv4/ip_forward)& echo 1 > /proc/sys/net/ipv4/ip_forward)&
EOF EOF
fi fi
}
start_services() {
bigecho "Starting services..." bigecho "Starting services..."
restorecon /etc/ipsec.d/*db 2>/dev/null
restorecon /usr/local/sbin -Rv 2>/dev/null
restorecon /usr/local/libexec/ipsec -Rv 2>/dev/null
sysctl -e -q -p sysctl -e -q -p
chmod +x /etc/rc.local chmod +x /etc/rc.local
chmod 600 /etc/ipsec.secrets* /etc/ppp/chap-secrets* /etc/ipsec.d/passwd* chmod 600 /etc/ipsec.secrets* /etc/ppp/chap-secrets* /etc/ipsec.d/passwd*
restorecon /etc/ipsec.d/*db 2>/dev/null
restorecon /usr/local/sbin -Rv 2>/dev/null
restorecon /usr/local/libexec/ipsec -Rv 2>/dev/null
if [ "$use_nft" = "1" ]; then if [ "$use_nft" = "1" ]; then
nft -f "$IPT_FILE" nft -f "$IPT_FILE"
else else
@ -532,20 +566,9 @@ mkdir -p /run/pluto
service fail2ban restart 2>/dev/null service fail2ban restart 2>/dev/null
service ipsec restart 2>/dev/null service ipsec restart 2>/dev/null
service xl2tpd restart 2>/dev/null service xl2tpd restart 2>/dev/null
}
swan_ver_url="https://dl.ls20.com/v1/$os_type/$os_ver/swanver?arch=$os_arch&ver=$SWAN_VER" show_vpn_info() {
swan_ver_latest=$(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}$' \
&& [ -n "$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 ($swan_ver_latest) is available.
To update, run:
wget https://git.io/vpnupgrade -O vpnup.sh && sudo sh vpnup.sh
EOF
fi
cat <<EOF cat <<EOF
================================================ ================================================
@ -568,7 +591,54 @@ IKEv2 guide: https://git.io/ikev2
================================================ ================================================
EOF EOF
}
check_swan_ver() {
swan_ver_url="https://dl.ls20.com/v1/$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
add_epel_repo
install_vpn_pkgs_1
install_vpn_pkgs_2
install_vpn_pkgs_3
install_fail2ban
get_ikev2_script
get_libreswan
install_libreswan
create_vpn_config
create_f2b_config
update_sysctl
update_iptables
enable_on_boot
start_services
show_vpn_info
} }
## Defer setup until we have the complete script ## Defer setup until we have the complete script

142
vpnsetup_ubuntu.sh
View File

@ -47,8 +47,19 @@ check_ip() {
printf '%s' "$1" | tr -d '\n' | grep -Eq "$IP_REGEX" printf '%s' "$1" | tr -d '\n' | grep -Eq "$IP_REGEX"
} }
vpnsetup() { check_root() {
if [ "$(id -u)" != 0 ]; then
exiterr "Script must be run as root. Try 'sudo sh $0'"
fi
}
check_vz() {
if [ -f /proc/user_beancounters ]; then
exiterr "OpenVZ VPS is not supported."
fi
}
check_os() {
os_type=$(lsb_release -si 2>/dev/null) os_type=$(lsb_release -si 2>/dev/null)
os_arch=$(uname -m | tr -dc 'A-Za-z0-9_-') 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") [ -z "$os_type" ] && [ -f /etc/os-release ] && os_type=$(. /etc/os-release && printf '%s' "$ID")
@ -74,15 +85,9 @@ fi
if { [ "$os_ver" = "10" ] || [ "$os_ver" = "11" ]; } && [ ! -e /dev/ppp ]; then if { [ "$os_ver" = "10" ] || [ "$os_ver" = "11" ]; } && [ ! -e /dev/ppp ]; then
exiterr "/dev/ppp is missing. Debian 11 or 10 users, see: https://git.io/vpndebian10" exiterr "/dev/ppp is missing. Debian 11 or 10 users, see: https://git.io/vpndebian10"
fi fi
}
if [ -f /proc/user_beancounters ]; then check_iface() {
exiterr "OpenVZ VPS is not supported."
fi
if [ "$(id -u)" != 0 ]; then
exiterr "Script must be run as root. Try 'sudo sh $0'"
fi
def_iface=$(route 2>/dev/null | grep -m 1 '^default' | grep -o '[^ ]*$') def_iface=$(route 2>/dev/null | grep -m 1 '^default' | grep -o '[^ ]*$')
[ -z "$def_iface" ] && def_iface=$(ip -4 route list 0/0 2>/dev/null | grep -m 1 -Po '(?<=dev )(\S+)') [ -z "$def_iface" ] && def_iface=$(ip -4 route list 0/0 2>/dev/null | grep -m 1 -Po '(?<=dev )(\S+)')
def_state=$(cat "/sys/class/net/$def_iface/operstate" 2>/dev/null) def_state=$(cat "/sys/class/net/$def_iface/operstate" 2>/dev/null)
@ -102,7 +107,9 @@ else
fi fi
NET_IFACE=eth0 NET_IFACE=eth0
fi fi
}
check_creds() {
[ -n "$YOUR_IPSEC_PSK" ] && VPN_IPSEC_PSK="$YOUR_IPSEC_PSK" [ -n "$YOUR_IPSEC_PSK" ] && VPN_IPSEC_PSK="$YOUR_IPSEC_PSK"
[ -n "$YOUR_USERNAME" ] && VPN_USER="$YOUR_USERNAME" [ -n "$YOUR_USERNAME" ] && VPN_USER="$YOUR_USERNAME"
[ -n "$YOUR_PASSWORD" ] && VPN_PASSWORD="$YOUR_PASSWORD" [ -n "$YOUR_PASSWORD" ] && VPN_PASSWORD="$YOUR_PASSWORD"
@ -127,55 +134,71 @@ case "$VPN_IPSEC_PSK $VPN_USER $VPN_PASSWORD" in
exiterr "VPN credentials must not contain these special characters: \\ \" '" exiterr "VPN credentials must not contain these special characters: \\ \" '"
;; ;;
esac esac
}
check_dns() {
if { [ -n "$VPN_DNS_SRV1" ] && ! check_ip "$VPN_DNS_SRV1"; } \ if { [ -n "$VPN_DNS_SRV1" ] && ! check_ip "$VPN_DNS_SRV1"; } \
|| { [ -n "$VPN_DNS_SRV2" ] && ! check_ip "$VPN_DNS_SRV2"; } then || { [ -n "$VPN_DNS_SRV2" ] && ! check_ip "$VPN_DNS_SRV2"; } then
exiterr "The DNS server specified is invalid." exiterr "The DNS server specified is invalid."
fi fi
}
check_iptables() {
if [ -x /sbin/iptables ] && ! iptables -nL INPUT >/dev/null 2>&1; then if [ -x /sbin/iptables ] && ! iptables -nL INPUT >/dev/null 2>&1; then
exiterr "IPTables check failed. Reboot and re-run this script." exiterr "IPTables check failed. Reboot and re-run this script."
fi fi
}
# shellcheck disable=SC2154,SC2039,SC3047
start_setup() {
bigecho "VPN setup in progress... Please be patient." bigecho "VPN setup in progress... Please be patient."
trap 'dlo=$dl;dl=$LINENO' DEBUG 2>/dev/null
trap 'finish $? $((dlo+1))' EXIT
mkdir -p /opt/src
cd /opt/src || exit 1
}
wait_for_apt() {
count=0 count=0
apt_lk=/var/lib/apt/lists/lock apt_lk=/var/lib/apt/lists/lock
pkg_lk=/var/lib/dpkg/lock pkg_lk=/var/lib/dpkg/lock
while fuser "$apt_lk" "$pkg_lk" >/dev/null 2>&1 \ while fuser "$apt_lk" "$pkg_lk" >/dev/null 2>&1 \
|| lsof "$apt_lk" >/dev/null 2>&1 || lsof "$pkg_lk" >/dev/null 2>&1; do || lsof "$apt_lk" >/dev/null 2>&1 || lsof "$pkg_lk" >/dev/null 2>&1; do
[ "$count" = "0" ] && bigecho "Waiting for apt to be available..." [ "$count" = "0" ] && echo "## Waiting for apt to be available..."
[ "$count" -ge "100" ] && exiterr "Could not get apt/dpkg lock." [ "$count" -ge "100" ] && exiterr "Could not get apt/dpkg lock."
count=$((count+1)) count=$((count+1))
printf '%s' '.' printf '%s' '.'
sleep 3 sleep 3
done done
}
mkdir -p /opt/src install_setup_pkgs_1() {
cd /opt/src || exit 1
bigecho "Installing packages required for setup..." bigecho "Installing packages required for setup..."
export DEBIAN_FRONTEND=noninteractive export DEBIAN_FRONTEND=noninteractive
( (
set -x set -x
apt-get -yqq update apt-get -yqq update
) || exiterr "'apt-get update' failed." ) || exiterr "'apt-get update' failed."
}
install_setup_pkgs_2() {
( (
set -x set -x
apt-get -yqq install wget dnsutils openssl \ apt-get -yqq install wget dnsutils openssl \
iptables iproute2 gawk grep sed net-tools >/dev/null iptables iproute2 gawk grep sed net-tools >/dev/null
) || exiterr2 ) || exiterr2
}
detect_ip() {
bigecho "Trying to auto discover IP of this server..." bigecho "Trying to auto discover IP of this server..."
public_ip=${VPN_PUBLIC_IP:-''} 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=$(dig @resolver1.opendns.com -t A -4 myip.opendns.com +short)
check_ip "$public_ip" || public_ip=$(wget -t 3 -T 15 -qO- http://ipv4.icanhazip.com) check_ip "$public_ip" || 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." check_ip "$public_ip" || exiterr "Cannot detect this server's public IP. Define it as variable 'VPN_PUBLIC_IP' and re-run this script."
}
install_vpn_pkgs() {
bigecho "Installing packages required for the VPN..." bigecho "Installing packages required for the VPN..."
( (
set -x set -x
apt-get -yqq install libnss3-dev libnspr4-dev pkg-config \ apt-get -yqq install libnss3-dev libnspr4-dev pkg-config \
@ -183,25 +206,28 @@ bigecho "Installing packages required for the VPN..."
libcurl4-nss-dev flex bison gcc make libnss3-tools \ libcurl4-nss-dev flex bison gcc make libnss3-tools \
libevent-dev libsystemd-dev uuid-runtime ppp xl2tpd >/dev/null libevent-dev libsystemd-dev uuid-runtime ppp xl2tpd >/dev/null
) || exiterr2 ) || exiterr2
}
install_fail2ban() {
bigecho "Installing Fail2Ban to protect SSH..." bigecho "Installing Fail2Ban to protect SSH..."
( (
set -x set -x
apt-get -yqq install fail2ban >/dev/null apt-get -yqq install fail2ban >/dev/null
) || exiterr2 ) || exiterr2
}
get_ikev2_script() {
bigecho "Downloading IKEv2 script..." bigecho "Downloading IKEv2 script..."
ikev2_url="https://github.com/hwdsl2/setup-ipsec-vpn/raw/master/extras/ikev2setup.sh" ikev2_url="https://github.com/hwdsl2/setup-ipsec-vpn/raw/master/extras/ikev2setup.sh"
( (
set -x set -x
wget -t 3 -T 30 -q -O ikev2.sh "$ikev2_url" wget -t 3 -T 30 -q -O ikev2.sh "$ikev2_url"
) || /bin/rm -f ikev2.sh ) || /bin/rm -f ikev2.sh
[ -s ikev2.sh ] && chmod +x ikev2.sh && ln -s /opt/src/ikev2.sh /usr/bin 2>/dev/null [ -s ikev2.sh ] && chmod +x ikev2.sh && ln -s /opt/src/ikev2.sh /usr/bin 2>/dev/null
}
get_libreswan() {
bigecho "Downloading Libreswan..." bigecho "Downloading Libreswan..."
SWAN_VER=4.4 SWAN_VER=4.4
swan_file="libreswan-$SWAN_VER.tar.gz" swan_file="libreswan-$SWAN_VER.tar.gz"
swan_url1="https://github.com/libreswan/libreswan/archive/v$SWAN_VER.tar.gz" swan_url1="https://github.com/libreswan/libreswan/archive/v$SWAN_VER.tar.gz"
@ -212,9 +238,10 @@ swan_url2="https://download.libreswan.org/$swan_file"
) || exit 1 ) || exit 1
/bin/rm -rf "/opt/src/libreswan-$SWAN_VER" /bin/rm -rf "/opt/src/libreswan-$SWAN_VER"
tar xzf "$swan_file" && /bin/rm -f "$swan_file" tar xzf "$swan_file" && /bin/rm -f "$swan_file"
}
install_libreswan() {
bigecho "Compiling and installing Libreswan, please wait..." bigecho "Compiling and installing Libreswan, please wait..."
cd "libreswan-$SWAN_VER" || exit 1 cd "libreswan-$SWAN_VER" || exit 1
cat > Makefile.inc.local <<'EOF' cat > Makefile.inc.local <<'EOF'
WERROR_CFLAGS=-w -s WERROR_CFLAGS=-w -s
@ -246,7 +273,9 @@ cd /opt/src || exit 1
if ! /usr/local/sbin/ipsec --version 2>/dev/null | grep -qF "$SWAN_VER"; then if ! /usr/local/sbin/ipsec --version 2>/dev/null | grep -qF "$SWAN_VER"; then
exiterr "Libreswan $SWAN_VER failed to build." exiterr "Libreswan $SWAN_VER failed to build."
fi fi
}
create_vpn_config() {
bigecho "Creating VPN configuration..." bigecho "Creating VPN configuration..."
L2TP_NET=${VPN_L2TP_NET:-'192.168.42.0/24'} L2TP_NET=${VPN_L2TP_NET:-'192.168.42.0/24'}
@ -373,9 +402,10 @@ VPN_PASSWORD_ENC=$(openssl passwd -1 "$VPN_PASSWORD")
cat > /etc/ipsec.d/passwd <<EOF cat > /etc/ipsec.d/passwd <<EOF
$VPN_USER:$VPN_PASSWORD_ENC:xauth-psk $VPN_USER:$VPN_PASSWORD_ENC:xauth-psk
EOF EOF
}
update_sysctl() {
bigecho "Updating sysctl settings..." bigecho "Updating sysctl settings..."
if ! grep -qs "hwdsl2 VPN script" /etc/sysctl.conf; then if ! grep -qs "hwdsl2 VPN script" /etc/sysctl.conf; then
conf_bk "/etc/sysctl.conf" conf_bk "/etc/sysctl.conf"
cat >> /etc/sysctl.conf <<EOF cat >> /etc/sysctl.conf <<EOF
@ -400,9 +430,10 @@ net.ipv4.tcp_rmem = 10240 87380 12582912
net.ipv4.tcp_wmem = 10240 87380 12582912 net.ipv4.tcp_wmem = 10240 87380 12582912
EOF EOF
fi fi
}
update_iptables() {
bigecho "Updating IPTables rules..." bigecho "Updating IPTables rules..."
IPT_FILE=/etc/iptables.rules IPT_FILE=/etc/iptables.rules
IPT_FILE2=/etc/iptables/rules.v4 IPT_FILE2=/etc/iptables/rules.v4
ipt_flag=0 ipt_flag=0
@ -441,9 +472,10 @@ if [ "$ipt_flag" = "1" ]; then
/bin/cp -f "$IPT_FILE" "$IPT_FILE2" /bin/cp -f "$IPT_FILE" "$IPT_FILE2"
fi fi
fi fi
}
enable_on_boot() {
bigecho "Enabling services on boot..." bigecho "Enabling services on boot..."
IPT_PST=/etc/init.d/iptables-persistent IPT_PST=/etc/init.d/iptables-persistent
IPT_PST2=/usr/share/netfilter-persistent/plugins.d/15-ip4tables IPT_PST2=/usr/share/netfilter-persistent/plugins.d/15-ip4tables
ipt_load=1 ipt_load=1
@ -506,9 +538,10 @@ echo 1 > /proc/sys/net/ipv4/ip_forward)&
exit 0 exit 0
EOF EOF
fi fi
}
start_services() {
bigecho "Starting services..." bigecho "Starting services..."
sysctl -e -q -p sysctl -e -q -p
chmod +x /etc/rc.local chmod +x /etc/rc.local
@ -518,20 +551,9 @@ mkdir -p /run/pluto
service fail2ban restart 2>/dev/null service fail2ban restart 2>/dev/null
service ipsec restart 2>/dev/null service ipsec restart 2>/dev/null
service xl2tpd restart 2>/dev/null service xl2tpd restart 2>/dev/null
}
swan_ver_url="https://dl.ls20.com/v1/$os_type/$os_ver/swanver?arch=$os_arch&ver=$SWAN_VER" show_vpn_info() {
swan_ver_latest=$(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}$' \
&& [ -n "$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 ($swan_ver_latest) is available.
To update, run:
wget https://git.io/vpnupgrade -O vpnup.sh && sudo sh vpnup.sh
EOF
fi
cat <<EOF cat <<EOF
================================================ ================================================
@ -554,7 +576,53 @@ IKEv2 guide: https://git.io/ikev2
================================================ ================================================
EOF EOF
}
check_swan_ver() {
swan_ver_url="https://dl.ls20.com/v1/$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
check_iptables
start_setup
wait_for_apt
install_setup_pkgs_1
install_setup_pkgs_2
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 ## Defer setup until we have the complete script