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#!/bin/bash
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#
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# Script for automatic setup of an IPsec VPN server on CentOS/RHEL,
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# Rocky Linux and AlmaLinux
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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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#
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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) 2015-2021 Lin Song <linsongui@gmail.com>
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# Based on the work of Thomas Sarlandie (Copyright 2012)
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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 "## $1"; }
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check_ip() {
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IP_REGEX='^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$'
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printf '%s' "$1" | tr -d '\n' | grep -Eq "$IP_REGEX"
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}
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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 $0'"
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fi
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}
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check_vz() {
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if [ -f /proc/user_beancounters ]; then
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exiterr "OpenVZ VPS is not supported."
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fi
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}
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check_os() {
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os_type=centos
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os_arch=$(uname -m | tr -dc 'A-Za-z0-9_-')
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rh_file="/etc/redhat-release"
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if grep -qs "Red Hat" "$rh_file"; then
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os_type=rhel
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fi
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if grep -qs "release 7" "$rh_file"; then
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os_ver=7
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elif grep -qs "release 8" "$rh_file"; then
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os_ver=8
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grep -qi stream "$rh_file" && os_ver=8s
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grep -qi rocky "$rh_file" && os_type=rocky
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grep -qi alma "$rh_file" && os_type=alma
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else
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exiterr "This script only supports CentOS/RHEL 7/8, Rocky Linux and AlmaLinux."
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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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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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}
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check_creds() {
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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 2>/dev/null | head -c 20)
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VPN_USER=vpnuser
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VPN_PASSWORD=$(LC_CTYPE=C tr -dc 'A-HJ-NPR-Za-km-z2-9' </dev/urandom 2>/dev/null | head -c 16)
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fi
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if [ -z "$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 $VPN_PASSWORD" in
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*[\\\"\']*)
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exiterr "VPN credentials must not contain these special characters: \\ \" '"
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;;
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esac
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}
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check_dns() {
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if { [ -n "$VPN_DNS_SRV1" ] && ! check_ip "$VPN_DNS_SRV1"; } \
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|| { [ -n "$VPN_DNS_SRV2" ] && ! check_ip "$VPN_DNS_SRV2"; } then
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exiterr "The DNS server specified is invalid."
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fi
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}
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start_setup() {
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bigecho "VPN setup in progress... Please be patient."
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# shellcheck disable=SC2154
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trap 'dlo=$dl;dl=$LINENO' DEBUG 2>/dev/null
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trap 'finish $? $((dlo+1))' EXIT
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mkdir -p /opt/src
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cd /opt/src || exit 1
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}
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install_setup_pkgs() {
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bigecho "Installing packages required for setup..."
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(
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set -x
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yum -y -q install wget bind-utils openssl tar \
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iptables iproute gawk grep sed net-tools >/dev/null
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) || exiterr2
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}
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detect_ip() {
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bigecho "Trying to auto discover IP of this server..."
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public_ip=${VPN_PUBLIC_IP:-''}
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check_ip "$public_ip" || public_ip=$(dig @resolver1.opendns.com -t A -4 myip.opendns.com +short)
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check_ip "$public_ip" || public_ip=$(wget -t 3 -T 15 -qO- http://ipv4.icanhazip.com)
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check_ip "$public_ip" || exiterr "Cannot detect this server's public IP. Define it as variable 'VPN_PUBLIC_IP' and re-run this script."
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}
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add_epel_repo() {
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bigecho "Adding the EPEL repository..."
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epel_url="https://dl.fedoraproject.org/pub/epel/epel-release-latest-$(rpm -E '%{rhel}').noarch.rpm"
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(
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set -x
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yum -y -q install epel-release >/dev/null 2>&1 || yum -y -q install "$epel_url" >/dev/null
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) || exiterr2
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}
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install_vpn_pkgs_1() {
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bigecho "Installing packages required for the VPN..."
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erp="--enablerepo"
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rp1="$erp=epel"
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rp2="$erp=*server-*optional*"
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rp3="$erp=*releases-optional*"
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rp4="$erp=[Pp]ower[Tt]ools"
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[ "$os_type" = "rhel" ] && rp4="$erp=codeready-builder-for-rhel-8-*"
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(
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set -x
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yum -y -q install nss-devel nspr-devel pkgconfig pam-devel \
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libcap-ng-devel libselinux-devel curl-devel nss-tools \
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flex bison gcc make util-linux ppp >/dev/null
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) || exiterr2
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}
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install_vpn_pkgs_2() {
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(
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set -x
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yum "$rp1" -y -q install xl2tpd >/dev/null 2>&1
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) || exiterr2
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}
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install_vpn_pkgs_3() {
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use_nft=0
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p1=systemd-devel
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p2=libevent-devel
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p3=fipscheck-devel
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p4=iptables-services
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if [ "$os_ver" = "7" ]; then
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(
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set -x
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yum "$rp2" "$rp3" -y -q install $p1 $p2 $p3 $p4 >/dev/null
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) || exiterr2
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else
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(
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set -x
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yum "$rp4" -y -q install $p1 $p2 $p3 >/dev/null
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) || exiterr2
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if systemctl is-active --quiet firewalld \
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|| systemctl is-active --quiet nftables \
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|| grep -qs "hwdsl2 VPN script" /etc/sysconfig/nftables.conf; then
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use_nft=1
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p4=nftables
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fi
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(
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set -x
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yum -y -q install $p4 >/dev/null
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) || exiterr2
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fi
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}
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install_fail2ban() {
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bigecho "Installing Fail2Ban to protect SSH..."
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(
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set -x
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yum "$rp1" -y -q install fail2ban >/dev/null
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) || exiterr2
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}
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get_ikev2_script() {
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bigecho "Downloading IKEv2 script..."
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ikev2_url="https://github.com/hwdsl2/setup-ipsec-vpn/raw/master/extras/ikev2setup.sh"
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(
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set -x
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wget -t 3 -T 30 -q -O ikev2.sh "$ikev2_url"
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) || /bin/rm -f ikev2.sh
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[ -s ikev2.sh ] && chmod +x ikev2.sh && ln -s /opt/src/ikev2.sh /usr/bin 2>/dev/null
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}
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check_libreswan() {
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SWAN_VER=4.5
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ipsec_ver=$(/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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[ "$swan_ver_old" = "$SWAN_VER" ]
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}
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get_libreswan() {
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if ! check_libreswan; then
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bigecho "Downloading 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/$swan_file"
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(
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set -x
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wget -t 3 -T 30 -q -O "$swan_file" "$swan_url1" || wget -t 3 -T 30 -q -O "$swan_file" "$swan_url2"
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) || exit 1
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/bin/rm -rf "/opt/src/libreswan-$SWAN_VER"
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tar xzf "$swan_file" && /bin/rm -f "$swan_file"
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else
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bigecho "Libreswan $SWAN_VER is already installed, skipping..."
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fi
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}
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install_libreswan() {
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if ! check_libreswan; then
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bigecho "Compiling and installing Libreswan, please wait..."
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cd "libreswan-$SWAN_VER" || exit 1
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cat > Makefile.inc.local <<'EOF'
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WERROR_CFLAGS=-w -s
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USE_DNSSEC=false
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USE_DH2=true
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USE_NSS_KDF=false
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FINALNSSDIR=/etc/ipsec.d
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EOF
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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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NPROCS=$(grep -c ^processor /proc/cpuinfo)
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[ -z "$NPROCS" ] && NPROCS=1
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(
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set -x
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make "-j$((NPROCS+1))" -s base >/dev/null && make -s install-base >/dev/null
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)
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cd /opt/src || exit 1
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/bin/rm -rf "/opt/src/libreswan-$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 $SWAN_VER failed to build."
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fi
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fi
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}
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create_vpn_config() {
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bigecho "Creating VPN configuration..."
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L2TP_NET=${VPN_L2TP_NET:-'192.168.42.0/24'}
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L2TP_LOCAL=${VPN_L2TP_LOCAL:-'192.168.42.1'}
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L2TP_POOL=${VPN_L2TP_POOL:-'192.168.42.10-192.168.42.250'}
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XAUTH_NET=${VPN_XAUTH_NET:-'192.168.43.0/24'}
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XAUTH_POOL=${VPN_XAUTH_POOL:-'192.168.43.10-192.168.43.250'}
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DNS_SRV1=${VPN_DNS_SRV1:-'8.8.8.8'}
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DNS_SRV2=${VPN_DNS_SRV2:-'8.8.4.4'}
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DNS_SRVS="\"$DNS_SRV1 $DNS_SRV2\""
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[ -n "$VPN_DNS_SRV1" ] && [ -z "$VPN_DNS_SRV2" ] && DNS_SRVS="$DNS_SRV1"
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# Create IPsec config
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conf_bk "/etc/ipsec.conf"
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cat > /etc/ipsec.conf <<EOF
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version 2.0
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config setup
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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
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uniqueids=no
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conn shared
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left=%defaultroute
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leftid=$public_ip
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right=%any
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encapsulation=yes
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authby=secret
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pfs=no
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rekey=no
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keyingtries=5
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dpddelay=30
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dpdtimeout=120
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dpdaction=clear
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ikev2=never
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ike=aes256-sha2,aes128-sha2,aes256-sha1,aes128-sha1,aes256-sha2;modp1024,aes128-sha1;modp1024
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phase2alg=aes_gcm-null,aes128-sha1,aes256-sha1,aes256-sha2_512,aes128-sha2,aes256-sha2
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ikelifetime=24h
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salifetime=24h
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sha2-truncbug=no
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conn l2tp-psk
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auto=add
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leftprotoport=17/1701
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rightprotoport=17/%any
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type=transport
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also=shared
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conn xauth-psk
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auto=add
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leftsubnet=0.0.0.0/0
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rightaddresspool=$XAUTH_POOL
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modecfgdns=$DNS_SRVS
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leftxauthserver=yes
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rightxauthclient=yes
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leftmodecfgserver=yes
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rightmodecfgclient=yes
|
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modecfgpull=yes
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cisco-unity=yes
|
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also=shared
|
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|
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include /etc/ipsec.d/*.conf
|
||||
EOF
|
||||
|
||||
# Specify IPsec PSK
|
||||
conf_bk "/etc/ipsec.secrets"
|
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cat > /etc/ipsec.secrets <<EOF
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%any %any : PSK "$VPN_IPSEC_PSK"
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EOF
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||||
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# Create xl2tpd config
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conf_bk "/etc/xl2tpd/xl2tpd.conf"
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cat > /etc/xl2tpd/xl2tpd.conf <<EOF
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[global]
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port = 1701
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||||
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||||
[lns default]
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ip range = $L2TP_POOL
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local ip = $L2TP_LOCAL
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require chap = yes
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refuse pap = yes
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require authentication = yes
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name = l2tpd
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pppoptfile = /etc/ppp/options.xl2tpd
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length bit = yes
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EOF
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# Set xl2tpd options
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conf_bk "/etc/ppp/options.xl2tpd"
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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
|
||||
}
|
||||
|
||||
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 >> "$F2B_FILE" <<'EOF'
|
||||
action = iptables[name=SSH, port=ssh, protocol=tcp]
|
||||
EOF
|
||||
fi
|
||||
fi
|
||||
}
|
||||
|
||||
update_sysctl() {
|
||||
bigecho "Updating sysctl settings..."
|
||||
if ! grep -qs "hwdsl2 VPN script" /etc/sysctl.conf; then
|
||||
conf_bk "/etc/sysctl.conf"
|
||||
cat >> /etc/sysctl.conf <<EOF
|
||||
|
||||
# Added by hwdsl2 VPN script
|
||||
kernel.msgmnb = 65536
|
||||
kernel.msgmax = 65536
|
||||
|
||||
net.ipv4.ip_forward = 1
|
||||
net.ipv4.conf.all.accept_redirects = 0
|
||||
net.ipv4.conf.all.send_redirects = 0
|
||||
net.ipv4.conf.all.rp_filter = 0
|
||||
net.ipv4.conf.default.accept_redirects = 0
|
||||
net.ipv4.conf.default.send_redirects = 0
|
||||
net.ipv4.conf.default.rp_filter = 0
|
||||
net.ipv4.conf.$NET_IFACE.send_redirects = 0
|
||||
net.ipv4.conf.$NET_IFACE.rp_filter = 0
|
||||
|
||||
net.core.wmem_max = 12582912
|
||||
net.core.rmem_max = 12582912
|
||||
net.ipv4.tcp_rmem = 10240 87380 12582912
|
||||
net.ipv4.tcp_wmem = 10240 87380 12582912
|
||||
EOF
|
||||
fi
|
||||
}
|
||||
|
||||
update_iptables() {
|
||||
bigecho "Updating IPTables rules..."
|
||||
IPT_FILE=/etc/sysconfig/iptables
|
||||
[ "$use_nft" = "1" ] && IPT_FILE=/etc/sysconfig/nftables.conf
|
||||
ipt_flag=0
|
||||
if ! grep -qs "hwdsl2 VPN script" "$IPT_FILE"; then
|
||||
ipt_flag=1
|
||||
fi
|
||||
|
||||
ipi='iptables -I INPUT'
|
||||
ipf='iptables -I FORWARD'
|
||||
ipp='iptables -t nat -I POSTROUTING'
|
||||
res='RELATED,ESTABLISHED'
|
||||
nff='nft insert rule inet firewalld'
|
||||
nfn='nft insert rule inet nftables_svc'
|
||||
if [ "$ipt_flag" = "1" ]; then
|
||||
service fail2ban stop >/dev/null 2>&1
|
||||
if [ "$use_nft" = "1" ]; then
|
||||
nft list ruleset > "$IPT_FILE.old-$SYS_DT"
|
||||
chmod 600 "$IPT_FILE.old-$SYS_DT"
|
||||
else
|
||||
iptables-save > "$IPT_FILE.old-$SYS_DT"
|
||||
fi
|
||||
$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"
|
||||
if [ "$use_nft" = "1" ]; then
|
||||
for vport in 500 4500 1701; do
|
||||
$nff filter_INPUT udp dport "$vport" accept 2>/dev/null
|
||||
$nfn allow udp dport "$vport" accept 2>/dev/null
|
||||
done
|
||||
for vnet in "$L2TP_NET" "$XAUTH_NET"; do
|
||||
for vdir in saddr daddr; do
|
||||
$nff filter_FORWARD ip "$vdir" "$vnet" accept 2>/dev/null
|
||||
$nfn FORWARD ip "$vdir" "$vnet" accept 2>/dev/null
|
||||
done
|
||||
done
|
||||
echo "flush ruleset" >> "$IPT_FILE"
|
||||
nft list ruleset >> "$IPT_FILE"
|
||||
else
|
||||
iptables-save >> "$IPT_FILE"
|
||||
fi
|
||||
fi
|
||||
}
|
||||
|
||||
enable_on_boot() {
|
||||
bigecho "Enabling services on boot..."
|
||||
systemctl --now mask firewalld 2>/dev/null
|
||||
if [ "$use_nft" = "1" ]; then
|
||||
systemctl enable nftables fail2ban 2>/dev/null
|
||||
else
|
||||
systemctl enable iptables fail2ban 2>/dev/null
|
||||
fi
|
||||
|
||||
if ! grep -qs "hwdsl2 VPN script" /etc/rc.local; then
|
||||
if [ -f /etc/rc.local ]; then
|
||||
conf_bk "/etc/rc.local"
|
||||
else
|
||||
echo '#!/bin/sh' > /etc/rc.local
|
||||
fi
|
||||
cat >> /etc/rc.local <<'EOF'
|
||||
|
||||
# Added by hwdsl2 VPN script
|
||||
(sleep 15
|
||||
service ipsec restart
|
||||
service xl2tpd restart
|
||||
echo 1 > /proc/sys/net/ipv4/ip_forward)&
|
||||
EOF
|
||||
fi
|
||||
}
|
||||
|
||||
start_services() {
|
||||
bigecho "Starting services..."
|
||||
sysctl -e -q -p
|
||||
|
||||
chmod +x /etc/rc.local
|
||||
chmod 600 /etc/ipsec.secrets* /etc/ppp/chap-secrets* /etc/ipsec.d/passwd*
|
||||
|
||||
restorecon /etc/ipsec.d/*db 2>/dev/null
|
||||
restorecon /usr/local/sbin -Rv 2>/dev/null
|
||||
restorecon /usr/local/libexec/ipsec -Rv 2>/dev/null
|
||||
|
||||
if [ "$use_nft" = "1" ]; then
|
||||
nft -f "$IPT_FILE"
|
||||
else
|
||||
iptables-restore < "$IPT_FILE"
|
||||
fi
|
||||
|
||||
# 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
|
||||
}
|
||||
|
||||
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 "$1"
|
||||
}
|
||||
|
||||
vpnsetup() {
|
||||
check_root
|
||||
check_vz
|
||||
check_os
|
||||
check_iface
|
||||
check_creds
|
||||
check_dns
|
||||
start_setup
|
||||
install_setup_pkgs
|
||||
detect_ip
|
||||
add_epel_repo
|
||||
install_vpn_pkgs_1
|
||||
install_vpn_pkgs_2
|
||||
install_vpn_pkgs_3
|
||||
install_fail2ban
|
||||
get_ikev2_script
|
||||
get_libreswan
|
||||
install_libreswan
|
||||
create_vpn_config
|
||||
create_f2b_config
|
||||
update_sysctl
|
||||
update_iptables
|
||||
enable_on_boot
|
||||
start_services
|
||||
show_vpn_info
|
||||
}
|
||||
|
||||
## Defer setup until we have the complete script
|
||||
vpnsetup "$@"
|
||||
|
||||
exit 0
|
||||
Loading…
Add table
Reference in a new issue