Overview
--------
The ACCEL-PPTP is PPTP client plugin for PPP.
ACCEL-PPTP uses kernel module to increase performance and decrease system usage.
For more documentation about PPTP visit POPTOP web site.
Requirment
----------
1. Modern linux distribution
2. kernel-2.6.36 or later with PPTP support
3. pppd-2.4.2 or later
4. CMake 2.6 or later
Compilation
-----------
First at all, make sure that your kernel properly configured. You should have
pptp.ko kernel module. Here some hints, how to enable support in kernel (tested
on 2.6.39):
[*] Networking support ->
Networking options ->
[*] TCP/IP networking ->
<M> IP: GRE demultiplexer ->
<M> IP: GRE tunnels over IP ->
Device Drivers ->
[*] Network device support ->
<M> PPP (point-to-point protocol) support ->
<M> PPP over IPv4 (PPTP)
Don't forget load module pptp.ko when connecting:
modprobe pptp
Untar tarball:
tar jxvf accel-pptp-<VER>.tar.bz2
Create build directory:
mkdir accel-pptp_build
cd accel-pptp_build
Now you can compile plugin (PPP_PREFIX_DIR is where PPP prefix dir, usually
this is /usr):
cmake ../accel-pptp-<VER> -DPPP_PREFIX_DIR=/usr
make
Insallation
-----------
Just make install from accel-pptp_build directory.
Configuration
-------------
If you are beginner in PPTP please read documentation available on POPTOP web
site.
Configuration is same as original pptpd and pptp.
Exception in configuration of client is:
replace line in peer config file (for instance, /etc/ppp/peers/my_vpn):
pty "pptp x.x.x.x ...."
to
plugin "/usr/lib/pptp.so" (path may differ)
pptp_server x.x.x.x (required)
pptp_phone xxxx (optional)
pptp_window xxx (optional) - this is sliding window size (at current time
automatic algorithm is not implemented),
set it to 3-10 for low-speed connections,
to >10 for hi-speed connections.
Remove lock option in /etc/ppp/options.pptp, /etc/ppp/options.pptpd or similar
if it exists.
See configuration example in example directory.
Warning !!!
-----------
1. This driver conflicts with ip_gre driver (in kernel), so make sure that
ip_gre is not built-in or loaded at run time.
2. Never mix connections of accel-pptp and original pptpd, before starting
accel-pptp make sure that no connections of original pptpd exists.
3. If you are upgrading pppd, don't forget recompile and reinstall pptp plugin
too.
Thanks
------
Author of original accel-pptp code Dmitry Kozlov <xeb@mail.ru>
Thanks to Kirill Yushkov for debug support and donations.
https://github.com/winterheart/accel-pptp/