[Chilli] pptp passthrough over coova chilli

[Ming-Ching Tiew]

--- On Sun, 4/17/11, Robert White <rwhite at globalgossip.net> wrote:

From: Robert White <rwhite at globalgossip.net>
Subject: Re: [Chilli] pptp passthrough over coova chilli
To: "Ming-Ching Tiew" <mctiew at yahoo.com>
Cc: chilli at coova.org
Date: Sunday, April 17, 2011, 11:47 AM

Make sure you're loading all the necessary modules in the kernel (2.6.x)

/sbin/modprobe ip_conntrack/sbin/modprobe ip_gre/sbin/modprobe ip_conntrack_pptp
/sbin/modprobe ip_nat_pptp


On 13 April 2011 13:37, Ming-Ching Tiew <mctiew at yahoo.com> wrote:





--- On Mon, 4/11/11, Ming-Ching Tiew <mctiew at yahoo.com> wrote:



>

> A colleague of mine help tested it on openwrt, and he said

> it worked on both cases, one is on 2.4.X kernel with chilli

> 1.0.12, and another is 2.6.X kernel with chilli 1.2.5.

>

> However my testing results on the my platforms have been

> negative. The PPTP pass through works perfectly without

> running chilli but as soon as that is turned on, pptp pass

> through does not work. The symptom of the problem is

> connected is established after entering username and

> password, but no traffic is possible. Can ping the PPTP

> server but cannot ping to the other end of private network.

> But occasionally things just work, which I have no idea

> how.

>



Apparently there is some kind of corruption issue because the PPTP server will receive many unsupported protocol 0xXXXX and start rejecting the packets. 'tcpdump' on the network revealed the same thing and got lots of LCP prot-rej. It's not even a firewall dropping packet or routing problem packet not reaching the PPTP server.


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