pptp vpn

what is PPTP ?
PPTP stands for Point to Point Tunneling Protocol. It was developed by a consortium including Microsoft and is used for

establishing VPN tunnels across the Internet
PPTP uses a client-server model for establishing VPN connections. Most Microsoft operating systems ship with a PPTP client,

so there is no need to purchase third-party client software. PPTP has the additional advantage over other VPN technologies of

being easy to setup.

What is Poptop ?
Before Poptop, no solution existed if you wish to connect PPTP clients to Linux servers. Using Poptop, Linux servers can now

function seamlessly in a PPTP VPN environment. This enables administrators to leverage the considerable benefits of both

Microsoft and Linux operating systems.

The current release version supports Windows 95/98/Me/NT/2000/XP PPTP clients and Linux PPTP clients.

what is MPPE ?
MPPE is Microsoft Point-To-Point Encryption, and is described in RFC3078. You will need to install it if your PPTP Server

requires it. Microsoft Windows VPN Server requires MPPE. If you do not require MPPE, skip this step.

 

2.6.15以下的内核都不支持MPPE
modprobe ppp-compress-18 && echo "OK"

wget http://www.advancevpn.com/public/ppp-2.4.1.tar.gz
wget http://prdownloads.sourceforge.net/pptpclient/pptp-1.6.0.tar.gz

编译安装

必须要先装ppp 然后再来装pptp
shell > cd ppp-2.4.1
shell > ./configure
shell > make
shell > make MANDIR=/usr/local/share install
shell > cd ../pptp-1.6.0
shell > make
shell > make MANDIR=/usr/local/share install
shell > history

开始配置
/etc/modules.conf
alias char-major-108 ppp_generic
alias tty-ldisc-3 ppp_async
alias tty-ldisc-14 ppp_synctty
alias ppp-compress-18 ppp_mppe
alias ppp-compress-21 bsd_comp
alias ppp-compress-24 ppp_deflate
alias ppp-compress-26 ppp_deflate

/etc/pptpd.conf
/etc/ppp/options.pptpd
/etc/ppp/chap-secrets