一. IPSec-Tools简介....................................................................................................... 1

二.网络环境构筑............................................................................................................. 1

1.环境及软件包........................................................................................................... 1

2. 环境搭建.................................................................................................................. 2

三. 服务器软件安装......................................................................................................... 2

1.下载IPSec-tools以及安装准备工作.......................................................................... 2

2.编译安装ipsec-tools................................................................................................. 4

2. 安装xl2tpd............................................................................................................... 4

四. 配置为L2tp/PSK服务器............................................................................................ 4

1. 配置文件/etc/setkey.conf.......................................................................................... 4

2. 配置文件/etc/racoon/racoon.conf............................................................................. 5

3. 配置/etc/racoon/psk.txt............................................................................................. 5

4. 配置/etc/ppp/chap-secrets......................................................................................... 6

5. 配置/etc/ppp/options.xl2tpd...................................................................................... 6

6. 配置/etc/xl2tpd/xl2tpd.conf...................................................................................... 6

7. 测试......................................................................................................................... 7

五. 配置为L2tp/RSA服务器............................................................................................ 7

1. 配置文件/etc/setkey.conf.......................................................................................... 7

2. 配置文件/etc/racoon/racoon.conf............................................................................. 7

3. 拷贝证书.................................................................................................................. 8

4. 配置/etc/ppp/chap-secrets......................................................................................... 8

5. 配置/etc/ppp/options.xl2tpd...................................................................................... 9

6. 配置/etc/xl2tpd/xl2tpd.conf...................................................................................... 9

7. 配置转发表（可选）.............................................................................................. 10

8. 测试....................................................................................................................... 10

附录................................................................................................................................ 0