hwdsl2 / setup-ipsec-vpn

Scripts to build your own IPsec VPN server, with IPsec/L2TP, Cisco IPsec and IKEv2
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TPLINK企业级路由器无法建立VPN连接 #1589

Closed gavingy33 closed 2 months ago

gavingy33 commented 2 months ago

问题描述 windows系统可正常连接,用tplink路由器无法正常连接,咨询售后抓包后说路由器不支持IKEV2协议。

日志

2024-08-14T05:52:06.069252+00:00 ubuntu-s-1vcpu-512mb-10gb-sgp1-01 pluto[12319]: "l2tp-psk"[2] 113.122.133.110 #3: received Delete SA payload: self-deleting ISAKMP State #3
2024-08-14T05:52:06.069423+00:00 ubuntu-s-1vcpu-512mb-10gb-sgp1-01 pluto[12319]: "l2tp-psk"[2] 113.122.133.110 #3: deleting ISAKMP SA (MAIN_R3) aged 87.632953s and NOT sending notification
2024-08-14T05:52:12.438032+00:00 ubuntu-s-1vcpu-512mb-10gb-sgp1-01 pluto[12319]: "l2tp-psk"[2] 113.122.133.110 #5: responding to Main Mode from unknown peer 113.122.133.110:49593
2024-08-14T05:52:12.438186+00:00 ubuntu-s-1vcpu-512mb-10gb-sgp1-01 pluto[12319]: "l2tp-psk"[2] 113.122.133.110 #5: Oakley Transform [3DES_CBC (192), HMAC_MD5, MODP1024] refused
2024-08-14T05:52:12.438235+00:00 ubuntu-s-1vcpu-512mb-10gb-sgp1-01 pluto[12319]: "l2tp-psk"[2] 113.122.133.110 #5: Oakley Transform [3DES_CBC (192), HMAC_SHA1, MODP1024] refused
2024-08-14T05:52:12.438279+00:00 ubuntu-s-1vcpu-512mb-10gb-sgp1-01 pluto[12319]: "l2tp-psk"[2] 113.122.133.110 #5: Oakley Transform [AES_CBC (128), HMAC_MD5, MODP1024] refused
2024-08-14T05:52:12.438307+00:00 ubuntu-s-1vcpu-512mb-10gb-sgp1-01 pluto[12319]: "l2tp-psk"[2] 113.122.133.110 #5: sent Main Mode R1
2024-08-14T05:52:20.818666+00:00 ubuntu-s-1vcpu-512mb-10gb-sgp1-01 pluto[12319]: "l2tp-psk"[2] 113.122.133.110 #5: retransmitting in response to duplicate packet; already STATE_MAIN_R1
2024-08-14T05:52:25.646625+00:00 ubuntu-s-1vcpu-512mb-10gb-sgp1-01 pluto[12319]: "l2tp-psk"[2] 113.122.133.110 #5: retransmitting in response to duplicate packet; already STATE_MAIN_R1
2024-08-14T05:52:45.939873+00:00 ubuntu-s-1vcpu-512mb-10gb-sgp1-01 pluto[12319]: "l2tp-psk"[2] 113.122.133.110 #6: responding to Main Mode from unknown peer 113.122.133.110:49593
2024-08-14T05:52:45.940157+00:00 ubuntu-s-1vcpu-512mb-10gb-sgp1-01 pluto[12319]: "l2tp-psk"[2] 113.122.133.110 #6: Oakley Transform [3DES_CBC (192), HMAC_MD5, MODP1024] refused
2024-08-14T05:52:45.940202+00:00 ubuntu-s-1vcpu-512mb-10gb-sgp1-01 pluto[12319]: "l2tp-psk"[2] 113.122.133.110 #6: Oakley Transform [3DES_CBC (192), HMAC_SHA1, MODP1024] refused
2024-08-14T05:52:45.940230+00:00 ubuntu-s-1vcpu-512mb-10gb-sgp1-01 pluto[12319]: "l2tp-psk"[2] 113.122.133.110 #6: Oakley Transform [AES_CBC (128), HMAC_MD5, MODP1024] refused
2024-08-14T05:52:45.940259+00:00 ubuntu-s-1vcpu-512mb-10gb-sgp1-01 pluto[12319]: "l2tp-psk"[2] 113.122.133.110 #6: sent Main Mode R1
2024-08-14T05:52:50.142129+00:00 ubuntu-s-1vcpu-512mb-10gb-sgp1-01 pluto[12319]: "l2tp-psk"[2] 113.122.133.110 #6: sent Main Mode R2
2024-08-14T05:52:50.348246+00:00 ubuntu-s-1vcpu-512mb-10gb-sgp1-01 pluto[12319]: "l2tp-psk"[2] 113.122.133.110 #6: Peer ID is ID_IPV4_ADDR: '192.168.1.3'
2024-08-14T05:52:50.348364+00:00 ubuntu-s-1vcpu-512mb-10gb-sgp1-01 pluto[12319]: "l2tp-psk"[2] 113.122.133.110 #6: ISAKMP SA established {auth=PRESHARED_KEY cipher=AES_CBC_128 integ=HMAC_SHA1 group=MODP1024}
2024-08-14T05:52:54.345605+00:00 ubuntu-s-1vcpu-512mb-10gb-sgp1-01 pluto[12319]: "l2tp-psk"[2] 113.122.133.110 #6: retransmitting in response to duplicate packet; already STATE_MAIN_R3
2024-08-14T05:52:58.531304+00:00 ubuntu-s-1vcpu-512mb-10gb-sgp1-01 pluto[12319]: "l2tp-psk"[2] 113.122.133.110 #6: the peer proposed: 128.199.205.178/32/UDP/1701===192.168.1.3/32/UDP/1701
2024-08-14T05:52:58.532514+00:00 ubuntu-s-1vcpu-512mb-10gb-sgp1-01 pluto[12319]: |   checking hostpair 128.199.205.178/32:1701 -> 113.122.133.110/32:1701
2024-08-14T05:52:58.532894+00:00 ubuntu-s-1vcpu-512mb-10gb-sgp1-01 pluto[12319]: "l2tp-psk"[2] 113.122.133.110 #6: NAT-Traversal: received 2 NAT-OA. Using first; ignoring others
2024-08-14T05:52:58.533071+00:00 ubuntu-s-1vcpu-512mb-10gb-sgp1-01 pluto[12319]: "l2tp-psk"[2] 113.122.133.110 #7: responding to Quick Mode proposal {msgid:295e1197}
2024-08-14T05:52:58.533111+00:00 ubuntu-s-1vcpu-512mb-10gb-sgp1-01 pluto[12319]: "l2tp-psk"[2] 113.122.133.110 #7:     us: 128.199.205.178/32/UDP/1701===128.199.205.178  them: 113.122.133.110[192.168.1.3]===113.122.133.110/32/UDP/1701
2024-08-14T05:52:58.533138+00:00 ubuntu-s-1vcpu-512mb-10gb-sgp1-01 pluto[12319]: "l2tp-psk"[2] 113.122.133.110 #7: sent Quick Mode reply, inbound IPsec SA installed, expecting confirmation transport mode {ESPinUDP=>0xc1181388 <0x8fd02c0e xfrm=AES_CBC_128-HMAC_SHA1_96 NATOA=192.168.1.3 NATD=113.122.133.110:49674 DPD=active}
2024-08-14T05:52:58.954715+00:00 ubuntu-s-1vcpu-512mb-10gb-sgp1-01 pluto[12319]: "l2tp-psk"[2] 113.122.133.110 #7: IPsec SA established transport mode {ESPinUDP=>0xc1181388 <0x8fd02c0e xfrm=AES_CBC_128-HMAC_SHA1_96 NATOA=192.168.1.3 NATD=113.122.133.110:49674 DPD=active}
2024-08-14T05:53:12.440763+00:00 ubuntu-s-1vcpu-512mb-10gb-sgp1-01 pluto[12319]: "l2tp-psk"[2] 113.122.133.110 #5: deleting incomplete state after 60 seconds
2024-08-14T05:53:12.440920+00:00 ubuntu-s-1vcpu-512mb-10gb-sgp1-01 pluto[12319]: "l2tp-psk"[2] 113.122.133.110 #5: deleting ISAKMP SA (MAIN_R1) aged 60.002631s and NOT sending notification

其它信息 请问我这边应该如何修改配置以兼容路由器内置配置

hwdsl2 commented 2 months ago

@gavingy33 你好!目前本项目不支持 tplink 路由器作为客户端,你可以另外尝试其他解决方案。

gavingy33 commented 2 months ago

您好,使用之前某个版本的安装脚本在centos7上可以支持,但是用最新的脚本及centos9却不行

#!/bin/sh
#
# Script for automatic setup of an IPsec VPN server on CentOS/RHEL 6 and 7.
# Works on any dedicated server or virtual private server (VPS) except OpenVZ.
#
# DO NOT RUN THIS SCRIPT ON YOUR PC OR MAC!
#
# The latest version of this script is available at:
# https://github.com/hwdsl2/setup-ipsec-vpn
#
# Copyright (C) 2015-2019 Lin Song <linsongui@gmail.com>
# Based on the work of Thomas Sarlandie (Copyright 2012)
#
# This work is licensed under the Creative Commons Attribution-ShareAlike 3.0
# Unported License: http://creativecommons.org/licenses/by-sa/3.0/
#
# Attribution required: please include my name in any derivative and let me
# know how you have improved it!

# =====================================================

# Define your own values for these variables
# - IPsec pre-shared key, VPN username and password
# - All values MUST be placed inside 'single quotes'
# - DO NOT use these special characters within values: \ " '

YOUR_IPSEC_PSK=''
YOUR_USERNAME=''
YOUR_PASSWORD=''

# Important notes:   https://git.io/vpnnotes
# Setup VPN clients: https://git.io/vpnclients

# =====================================================

export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
SYS_DT=$(date +%F-%T)

exiterr()  { echo "Error: $1" >&2; exit 1; }
exiterr2() { exiterr "'yum install' failed."; }
conf_bk() { /bin/cp -f "$1" "$1.old-$SYS_DT" 2>/dev/null; }
bigecho() { echo; echo "## $1"; echo; }

check_ip() {
  IP_REGEX='^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$'
  printf '%s' "$1" | tr -d '\n' | grep -Eq "$IP_REGEX"
}

vpnsetup() {

if ! grep -qs -e "release 6" -e "release 7" /etc/redhat-release; then
  exiterr "This script only supports CentOS/RHEL 6 and 7."
fi

if [ -f /proc/user_beancounters ]; then
  exiterr "OpenVZ VPS is not supported. Try OpenVPN: github.com/Nyr/openvpn-install"
fi

if [ "$(id -u)" != 0 ]; then
  exiterr "Script must be run as root. Try 'sudo sh $0'"
fi

def_iface=$(route 2>/dev/null | grep -m 1 '^default' | grep -o '[^ ]*$')
[ -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)
if [ -n "$def_state" ] && [ "$def_state" != "down" ]; then
  case "$def_iface" in
    wl*)
      exiterr "Wireless interface '$def_iface' detected. DO NOT run this script on your PC or Mac!"
      ;;
  esac
  NET_IFACE="$def_iface"
else
  eth0_state=$(cat "/sys/class/net/eth0/operstate" 2>/dev/null)
  if [ -z "$eth0_state" ] || [ "$eth0_state" = "down" ]; then
    exiterr "Could not detect the default network interface."
  fi
  NET_IFACE=eth0
fi

[ -n "$YOUR_IPSEC_PSK" ] && VPN_IPSEC_PSK="$YOUR_IPSEC_PSK"
[ -n "$YOUR_USERNAME" ] && VPN_USER="$YOUR_USERNAME"
[ -n "$YOUR_PASSWORD" ] && VPN_PASSWORD="$YOUR_PASSWORD"

if [ -z "$VPN_IPSEC_PSK" ] && [ -z "$VPN_USER" ] && [ -z "$VPN_PASSWORD" ]; then
  bigecho "VPN credentials not set by user. Generating random PSK and password..."
  VPN_IPSEC_PSK=$(LC_CTYPE=C tr -dc 'A-HJ-NPR-Za-km-z2-9' < /dev/urandom | head -c 20)
  VPN_USER=vpnuser
  VPN_PASSWORD=$(LC_CTYPE=C tr -dc 'A-HJ-NPR-Za-km-z2-9' < /dev/urandom | head -c 16)
fi

if [ -z "$VPN_IPSEC_PSK" ] || [ -z "$VPN_USER" ] || [ -z "$VPN_PASSWORD" ]; then
  exiterr "All VPN credentials must be specified. Edit the script and re-enter them."
fi

if printf '%s' "$VPN_IPSEC_PSK $VPN_USER $VPN_PASSWORD" | LC_ALL=C grep -q '[^ -~]\+'; then
  exiterr "VPN credentials must not contain non-ASCII characters."
fi

case "$VPN_IPSEC_PSK $VPN_USER $VPN_PASSWORD" in
  *[\\\"\']*)
    exiterr "VPN credentials must not contain these special characters: \\ \" '"
    ;;
esac

bigecho "VPN setup in progress... Please be patient."

# Create and change to working dir
mkdir -p /opt/src
cd /opt/src || exit 1

bigecho "Installing packages required for setup..."

yum -y install wget bind-utils openssl \
  iptables iproute gawk grep sed net-tools || exiterr2

bigecho "Trying to auto discover IP of this server..."

cat <<'EOF'
In case the script hangs here for more than a few minutes,
press Ctrl-C to abort. Then edit it and manually enter IP.
EOF

# 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..."

epel_url="https://dl.fedoraproject.org/pub/epel/epel-release-latest-$(rpm -E '%{rhel}').noarch.rpm"
yum -y install epel-release || yum -y install "$epel_url" || exiterr2

bigecho "Installing packages required for the VPN..."

REPO1='--enablerepo=epel'
REPO2='--enablerepo=*server-optional*'
REPO3='--enablerepo=*releases-optional*'

yum -y install nss-devel nspr-devel pkgconfig pam-devel \
  libcap-ng-devel libselinux-devel curl-devel \
  flex bison gcc make ppp || exiterr2

yum "$REPO1" -y install xl2tpd || exiterr2

if grep -qs "release 6" /etc/redhat-release; then
  yum -y remove libevent-devel
  yum "$REPO2" "$REPO3" -y install libevent2-devel fipscheck-devel || exiterr2
else
  yum -y install systemd-devel iptables-services || exiterr2
  yum "$REPO2" "$REPO3" -y install libevent-devel fipscheck-devel || exiterr2
fi

bigecho "Installing Fail2Ban to protect SSH..."

yum "$REPO1" -y install fail2ban || exiterr2

bigecho "Compiling and installing Libreswan..."

SWAN_VER=3.29
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-$SWAN_VER" || exit 1
cat > Makefile.inc.local <<'EOF'
WERROR_CFLAGS =
USE_DNSSEC = false
USE_DH31 = false
USE_NSS_AVA_COPY = true
USE_NSS_IPSEC_PROFILE = false
USE_GLIBC_KERN_FLIP_HEADERS = true
EOF
NPROCS=$(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
  ike-frag=yes
  cisco-unity=yes
  also=shared
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"
  if [ "$(getconf LONG_BIT)" = "64" ]; then
    SHM_MAX=68719476736
    SHM_ALL=4294967296
  else
    SHM_MAX=4294967295
    SHM_ALL=268435456
  fi
cat >> /etc/sysctl.conf <<EOF

# Added by hwdsl2 VPN script
kernel.msgmnb = 65536
kernel.msgmax = 65536
kernel.shmmax = $SHM_MAX
kernel.shmall = $SHM_ALL

net.ipv4.ip_forward = 1
net.ipv4.conf.all.accept_source_route = 0
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_source_route = 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

bigecho "Updating IPTables rules..."

# Check if rules need updating
ipt_flag=0
IPT_FILE="/etc/sysconfig/iptables"
if ! grep -qs "hwdsl2 VPN script" "$IPT_FILE" \
   || ! iptables -t nat -C POSTROUTING -s "$L2TP_NET" -o "$NET_IFACE" -j MASQUERADE 2>/dev/null \
   || ! iptables -t nat -C POSTROUTING -s "$XAUTH_NET" -o "$NET_IFACE" -m policy --dir out --pol none -j MASQUERADE 2>/dev/null; then
  ipt_flag=1
fi

# Add IPTables rules for VPN
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 "$NET_IFACE" -j ACCEPT
  # Uncomment if you wish to disallow traffic between VPN clients themselves
  # iptables -I FORWARD 2 -i ppp+ -o ppp+ -s "$L2TP_NET" -d "$L2TP_NET" -j DROP
  # iptables -I FORWARD 3 -s "$XAUTH_NET" -d "$XAUTH_NET" -j DROP
  iptables -A FORWARD -j DROP
  iptables -t nat -I POSTROUTING -s "$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-save >> "$IPT_FILE"
fi

bigecho "Creating basic Fail2Ban rules..."

if [ ! -f /etc/fail2ban/jail.local ] ; then
cat > /etc/fail2ban/jail.local <<'EOF'
[ssh-iptables]
enabled  = true
filter   = sshd
action   = iptables[name=SSH, port=ssh, protocol=tcp]
logpath  = /var/log/secure
EOF
fi

bigecho "Enabling services on boot..."

if grep -qs "release 6" /etc/redhat-release; then
  chkconfig iptables on
  chkconfig fail2ban on
else
  systemctl --now mask firewalld 2>/dev/null
  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
modprobe -q pppol2tp
service ipsec restart
service xl2tpd restart
echo 1 > /proc/sys/net/ipv4/ip_forward)&
EOF
fi

bigecho "Starting services..."

# Restore SELinux contexts
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

# Reload sysctl.conf
sysctl -e -q -p

# Update file attributes
chmod +x /etc/rc.local
chmod 600 /etc/ipsec.secrets* /etc/ppp/chap-secrets* /etc/ipsec.d/passwd*

# Apply new IPTables rules
iptables-restore < "$IPT_FILE"

# Fix xl2tpd on CentOS 7, if kernel module "l2tp_ppp" is unavailable
if grep -qs "release 7" /etc/redhat-release; then
  if ! modprobe -q l2tp_ppp; then
    sed -i '/^ExecStartPre/s/^/#/' /usr/lib/systemd/system/xl2tpd.service
    systemctl daemon-reload
  fi
fi

# Restart services
mkdir -p /run/pluto
modprobe -q pppol2tp
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

================================================

EOF

}

## Defer setup until we have the complete script
vpnsetup "$@"

exit 0
hwdsl2 commented 2 months ago

@gavingy33 你好!你所说的脚本大概是2019年左右的版本 (Libreswan 3.29)。该 Libreswan 版本较旧,可能存在漏洞,不建议使用。本项目在那之后进行了一些优化和改进,如果最新版不适用于你的用例,建议你尝试其他解决方案比如 OpenVPN 等。