筹建基于accel-ppp的VPN服务器

搭建基于accel-ppp的VPN服务器

原版英文介绍如下

Welcome to the ACCEL-PPP Open Source Project

ACCEL-PPP is a high performance VPN server application for linux.
Its goal is aggregation of various popular VPN techniques to a single application.
There are many open source projects which provides VPN services,
but they are specialized to a specific VPN technique: only PPPoE, only PPtP, only L2TP.
And you have to learn, configure and manage each one separately to build multi-service VPN server.
With ACCEL-PPP you have all-in-one with single configuration, single management, single monitoring.

Core features are:PPTP serverL2TPv2 serverPPPoE serverRadius including CoA/DM(PoD)Built-in shaper (tbf)Command line interface (telnet)SNMP agentIPv6 including builtin Neighbor Discovery and DHCPv6

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来自http://sourceforge.net/apps/trac/accel-ppp/wiki

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由于accel-ppp需要内核支持，并且内核版本在2.6.25以上

ubuntu 10.04 11.10内核版本都高于2.6.25

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所需依赖软件如下

Requirementsmodern linux distributionkernel-2.6.25 or latercmake-2.6 or laterlibnl-2.0 or later (for builtin shaper)libcrypto-0.9.8 or later (openssl-0.9.8)libpcrenet-snmp-5.x (for snmp)

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以ubuntu 11.10 server为例，记录一下安装过程

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一、安装依赖软件

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要使用/etc/chap-secrets验证还是radius验证，在一开始的[modules]选择响应的即可

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四、启动accel-ppp

需要先加载内核模块，执行

写道modprobe l2tp_ppp

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需要内核编译l2tp_core和l2tp_ppp

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开启转发，nat转换

写道iptables -A POSTROUTING -t nat -s 172.20.0.0/24 -j MASQUERADE
echo 1 > /proc/sys/net/ipv4/ip_forward?

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命令行执行

写道accel-pppd -d -c /etc/accel-ppp.conf

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即可，-d是开在后台，去掉此参数即是开在前台，但是开前台也没什么log输出

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启动后，分别监听在tcp 1723和udp 1701端口 （配置文件只开启pptp、l2tp）

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