Debian 7 下搭建 IPSec + L2TP VPN 服务器
因为公司的网络限制，好多资料没办法查到， 遂决定搞个VPN翻墙， 但是国内的VPN实在是不敢恭维， 稳定性那叫一个差~ 正好有朋友推荐了国外的VPS主机， 去看了一下，在日本东京的节点速度很快，果断入手了一个。本着自己动手，丰衣足食的原则 ， 我在建好VPS上的Debian 7系统后，就开始搭建我的VPN服务器， 不得不说， 本来这并不是个难事，但是现在度娘找出来的配置教程，实在是太差了， 写的不明白，乱七八糟的，排版还乱， 所以，今天把我自己配置的过程记录下来，希望能给有同样需求的朋友一些帮助。OK， 进入正题， Let's Go~!
1、安装OpenSWAN
sudo apt-get install openswan
安装过程中如问到: Use an X.509 certificate for this host, 回答NO.
1.1 配置sysctl参数
sudo mv /etc/sysctl.conf /etc/sysctl.conf.bak
sudo vim /etc/sysctl.conf
-----------输入如下内容-------------
net.ipv4.ip_forward = 1
net.ipv4.conf.all.accept_redirects = 0
net.ipv6.conf.all.accept_redirects = 0
net.ipv4.conf.all.send_redirects = 0
1.2 加载sysctl参数
sysctl -p
sudo bash -c 'for each in /proc/sys/net/ipv4/conf/*
do
echo 0 > $each/accept_redirects
echo 0 > $each/send_redirects
done
'
sudo bash -c 'for each in /proc/sys/net/ipv4/conf/*
do
echo 0 > $each/accept_redirects
echo 0 > $each/send_redirects
done
'
1.3 生成iptables配置
sudo mv /etc/rc.local /etc/rc.local.bak
sudo vim /etc/rc.local
-----------输入如下内容-------------
#!/bin/sh -e
iptables -t nat -A POSTROUTING -s 10.1.1.0/24 -o eth0 -j MASQUERADE
exit 0
sudo vim /etc/rc.local
-----------输入如下内容-------------
#!/bin/sh -e
iptables -t nat -A POSTROUTING -s 10.1.1.0/24 -o eth0 -j MASQUERADE
exit 0
#添加执行权限，运行配置
sudo chmod +x /etc/rc.local
sudo /etc/rc.local
sudo chmod +x /etc/rc.local
sudo /etc/rc.local
1.4 配置ipsec.secrets
sudo mv /etc/ipsec.secrets /etc/ipsec.secrets.bak
sudo vim /etc/ipsec.secrets
-----------输入如下内容-------------
# 将IP和密码换成服务器IP和设定的密码
111.222.333.444 %any: PSK "0123456" #此处密码为服务器的共享密钥，连接时时提供
sudo vim /etc/ipsec.secrets
-----------输入如下内容-------------
# 将IP和密码换成服务器IP和设定的密码
111.222.333.444 %any: PSK "0123456" #此处密码为服务器的共享密钥，连接时时提供
1.5 配置ipsec.conf
sudo mv /etc/ipsec.conf /etc/ipsec.conf.bak
sudo vim /etc/ipsec.conf
-----------输入如下内容-------------
version 2.0
config setup
nat_traversal=yes
virtual_private=%v4:10.0.0.0/8,%v4:192.168.0.0/16,%v4:172.16.0.0/12
oe=off
protostack=netkey
conn L2TP-PSK-NAT
rightsubnet=vhost:%priv
also=L2TP-PSK-noNAT
conn L2TP-PSK-noNAT
authby=secret
pfs=no
auto=add
keyingtries=3
rekey=no
ikelifetime=8h
keylife=1h
type=transport
left=111.222.333.444 #换成服务器ip
leftprotoport=17/1701
right=%any
rightprotoport=17/%any
sudo vim /etc/ipsec.conf
-----------输入如下内容-------------
version 2.0
config setup
nat_traversal=yes
virtual_private=%v4:10.0.0.0/8,%v4:192.168.0.0/16,%v4:172.16.0.0/12
oe=off
protostack=netkey
conn L2TP-PSK-NAT
rightsubnet=vhost:%priv
also=L2TP-PSK-noNAT
conn L2TP-PSK-noNAT
authby=secret
pfs=no
auto=add
keyingtries=3
rekey=no
ikelifetime=8h
keylife=1h
type=transport
left=111.222.333.444 #换成服务器ip
leftprotoport=17/1701
right=%any
rightprotoport=17/%any
1.6 激活ipsec服务
sudo update-rc.d ipsec defaults
2、安装xl2tpd
sudo apt-get install xl2tpd
2.1 配置xl2tpd.conf
sudo mv /etc/xl2tpd/xl2tpd.conf /etc/xl2tpd/xl2tpd.conf.bak
sudo vim /etc/xl2tpd/xl2tpd.conf
-----------输入如下内容-------------
[global]
ipsec saref = yes
[lns default]
ip range = 10.1.1.2-10.1.1.255
local ip = 10.1.1.1
refuse chap = yes
refuse pap = yes
require authentication = yes
ppp debug = yes
pppoptfile = /etc/ppp/options.xl2tpd
length bit = yes
sudo vim /etc/xl2tpd/xl2tpd.conf
-----------输入如下内容-------------
[global]
ipsec saref = yes
[lns default]
ip range = 10.1.1.2-10.1.1.255
local ip = 10.1.1.1
refuse chap = yes
refuse pap = yes
require authentication = yes
ppp debug = yes
pppoptfile = /etc/ppp/options.xl2tpd
length bit = yes
2.2 配置options.xl2tpd
sudo mv /etc/ppp/options.xl2tpd /etc/ppp/options.xl2tpd.bak
sudo vim /etc/ppp/options.xl2tpd
-----------输入如下内容-------------
require-mschap-v2
ms-dns 8.8.8.8
ms-dns 8.8.4.4
asyncmap 0
auth
crtscts
lock
hide-password
modem
debug
name l2tpd
proxyarp
lcp-echo-interval 30
lcp-echo-failure 4
sudo vim /etc/ppp/options.xl2tpd
-----------输入如下内容-------------
require-mschap-v2
ms-dns 8.8.8.8
ms-dns 8.8.4.4
asyncmap 0
auth
crtscts
lock
hide-password
modem
debug
name l2tpd
proxyarp
lcp-echo-interval 30
lcp-echo-failure 4
2.3 配置chap-secrets
sudo mv /etc/ppp/chap-secrets /etc/ppp/chap-secrets.bak
sudo vim /etc/ppp/chap-secrets
-----------输入如下内容-------------
#user server password ip
user1 l2tpd 123456 *
user2 l2tpd 123456 *
sudo vim /etc/ppp/chap-secrets
-----------输入如下内容-------------
#user server password ip
user1 l2tpd 123456 *
user2 l2tpd 123456 *
2.4 启动L2TP服务器
sudo invoke-rc.d xl2tpd restart
sudo invoke-rc.d ipsec restart
sudo invoke-rc.d ipsec restart
2.5 验证服务器状态
sudo ipsec verify
出现如下信息：
Checking your system to see if IPsec got installed and started correctly:
Version check and ipsec on-path [OK]
Linux Openswan U2.6.28/K2.6.32.16-linode28 (netkey)
Checking for IPsec support in kernel [OK]
NETKEY detected, testing for disabled ICMP send_redirects [OK]
NETKEY detected, testing for disabled ICMP accept_redirects [OK]
Checking that pluto is running [OK]
Pluto listening for IKE on udp 500 [OK]
Pluto listening for NAT-T on udp 4500 [OK]
Two or more interfaces found, checking IP forwarding [OK]
Checking NAT and MASQUERADEing
Checking for 'ip' command [OK]
Checking for 'iptables' command [OK]
Opportunistic Encryption Support [DISABLED]
这样，就证明VPN配置已经成功了，接下来，就可以在用上面建立好的两个用户, ueer1和user2进行登录了， 登录时方式要选择L2TP哦~~嘿嘿~~至此，配置完毕，很简单吧~~！
本帖为原创，转帖请说明出处，谢谢合作。
本帖地址：http://blog.csdn.net/sonsie007/article/details/16932017
相关推荐
graseed 2020-10-28
jinhao 2020-09-07
yoohsummer 2020-06-01
SXIAOYI 2020-09-16
impress 2020-02-20
chenshuixian 2013-06-01
羽化大刀Chrome 2013-05-31
kanpiaoxue 2013-06-19
quanhaoH 2013-06-17
pigsmall 2020-11-19
大数据杂谈 2020-09-26
ChinaWin 2020-08-13
mohanzb 2020-08-01
王国平 2020-06-20
kangtingting0 2020-05-20
MichelinMessi 2020-02-19
nicepainkiller 2020-01-25
hfszy0 2013-05-15
lizhenmxcz 2013-05-12