查了一下，似乎关于mpd的文章不多，把自己的一个笔记贴出来，大家多指教
代码: mpd pptp server 配置实例
from： https://bbs.bsdbase.com/index.php?s=&act=ST&f=1&t=125
mpd pptp server 配置实例
Aborigen Yin(阿土)
2003.03.12
mpd 是FreeBSD下的pptp 综合工具，可以用来做pptp客户端和服务器，通过适当配置作vpn也不错，这里只是一个作pptp server的实例
mpd自己带的文档已经很详细了，如果你需要其他的功能，看看文档吧，E文的。
#内核应该有如下支持
# for mpd pptp server
options NETGRAPH #netgraph(4) system
options NETGRAPH_ASYNC
options NETGRAPH_BPF
options NETGRAPH_ECHO
options NETGRAPH_ETHER
options NETGRAPH_HOLE
options NETGRAPH_IFACE
options NETGRAPH_KSOCKET
options NETGRAPH_LMI
# MPPC compression requires proprietary files (not included)
#options NETGRAPH_MPPC_COMPRESSION
options NETGRAPH_MPPC_ENCRYPTION
options NETGRAPH_PPP
options NETGRAPH_PPTPGRE
options NETGRAPH_RFC1490
options NETGRAPH_SOCKET
options NETGRAPH_UI
#end
#如果没有系统会自动加载相应的内核模块，所以你可以先继续，不必急着编译内核
#安装、配置mpd pptp server.
cd /usr/ports/net/mpd
make install
cd /usr/local/etc/mpd
#开放5个拨入；
#vi /usr/local/etc/mpd/mpd.conf
#begin of mpd.conf
#
default:
load client1
load client2
load client3
load client4
load client5
client1:
new -i ng0 pptp1 pptp1
set ipcp ranges 172.16.120.80/32 172.16.120.100/32
load client_standard
#
client2:
new -i ng1 pptp2 pptp2
set ipcp ranges 172.16.120.81/32 172.16.120.101/32
load client_standard
#
client3:
new -i ng2 pptp3 pptp3
set ipcp ranges 172.16.120.82/32 172.16.120.102/32
load client_standard
#
client4:
new -i ng3 pptp4 pptp4
set ipcp ranges 172.16.120.83/32 172.16.120.103/32
load client_standard
#
client5:
new -i ng4 pptp5 pptp5
set ipcp ranges 172.16.120.84/32 172.16.120.104/32
load client_standard
#
client_standard:
set iface disable on-demand
set iface enable proxy-arp
#set iface idle 1800
set bundle enable multilink
set link yes acfcomp protocomp
set link no pap chap
set link enable chap
set link mtu 1460
set link keep-alive 10 60
set ipcp yes vjcomp
set ipcp dns 211.239.166.211
# set ipcp nbns 172.16.120.4
set bundle enable compression
set ccp yes mppc
set ccp yes mpp-e40
set ccp yes mpp-e128
set ccp yes mpp-stateless
#end of mpd.conf
#vi /usr/local/etc/mpd/mpd.links
#bengin of mpd.links
pptp1:
set link type pptp
set pptp self 0.0.0.0
set pptp enable incoming
set pptp disable originate
#
pptp2:
set link type pptp
set pptp self 0.0.0.0
set pptp enable incoming
set pptp disable originate
#
pptp3:
set link type pptp
set pptp self 0.0.0.0
set pptp enable incoming
set pptp disable originate
#
pptp4:
set link type pptp
set pptp self 0.0.0.0
set pptp enable incoming
set pptp disable originate
#
pptp5:
set link type pptp
set pptp self 0.0.0.0
set pptp enable incoming
set pptp disable originate
#
#end of mpd.links
#注意：mpd.conf里面，每一个配置项的link名称（new -i ng0 pptp1 pptp1，这一行定义），
#比如client1（links = pptp1）,client2（links = pptp2）,在mpd.links中必须有相应的link type定义，
#pptp1:
# set link type pptp
#pptp2:
# set link type pptp
#其他类推；
#用户名和密码；
#vi /usr/local/etc/mpd/mpd.secret
#bengin of mpd.secret
#username <---> password <-----> ip address range to user
#这里可以指定某个用户拨号时使用的地址
#user1 fortest 172.16.120.111/24
#也可以不指定
user1 fortest
#end of mpd.secret
#注意：杀死进程时不要使用-9强行结束，否则可能导致进程不能正常关闭设备,必须重新启动系统才能恢复；
#服务管理脚本；
#vi /usr/local/sbin/mpd.sh
#!/bin/sh
case "$1" in
start)
if [ -x /usr/local/sbin/mpd ]; then
/usr/local/sbin/mpd -b -d /usr/local/etc/mpd -f mpd.conf && echo 'Mpd PPtP server started.'
fi
;;
stop)
killall mpd && echo 'Mpd PPtP server stopped.'
;;
restart)
echo .
echo Restart Mpd PPtP server ......
$0 stop
sleep 10
$0 start
;;
*)
echo "$0 start | stop | restart"
;;
esac
#end of mpd.sh
chmod 700 /usr/local/sbin/mpd.sh
#设置开机自动执行
ln -s /usr/local/sbin/mpd.sh /usr/local/etc/rc.d/mpd.sh
#配置日志记录
touch /var/log/mpd.log
#vi /etc/syslog.conf
#添加如下，!mpd表示mpd这个进程；
!mpd
*.* /var/log/mpd.log
#vi /etc/newsyslog.conf
/var/log/mpd.log 644 5 100 * Z
#重新启动syslogd
killall -HUP syslogd
####################################
mpd.sh restart
另外，红袖曾经投诉过论坛吃空格的问题，我发现，可以用code这个功能解决，试试？
