HOWTO : ××× (PPTP) on BackTrack 5 R2

Step 1 :
apt-get update
apt-get dist-upgrade
apt-get install network-manager-gnome network-manager-pptp

Step 2 :
cp /etc/network/interfaces /etc/network/interfaces.bak
nano /etc/network/interfaces

Delete all entries but left the first two lines behind.
auto lo
iface lo inet loopback

Step 3 :
service network-manager start

Step 4 :
System >> Startup Applications >> Network Manager
Append "&" on the end of the Command. It will be looked like this :
nm-applet --sm-disable &
Make sure Start dhclient is enabled in the menu of Startup Applications.
Reboot the system and then configure your ××× (PPTP) as usual.
Make sure Advanced >> Use Point-to-Point encryption (MPPE) is enabled in the Configuration of PPTP.
That's all! See you.

参考链接：

http://samiux.blogspot.com/2012/06/howto-***-pptp-on-backtrack-5-r2.html