Re: User connects to VPN, but no network access

I'm still stuck on this problem, but I have made some progress... I
apparently have the exact same problem as stated in this thread, relating
to android and their ppp implementation:
https://code.google.com/p/android/issues/detail?id=4706

Basically, a VPN connection is created, and maintained, but after passing
data over it for awhile, it stalls and data no longer transfers, however
the connection is maintained, encryption fails and you start getting tons
of "unsupported protocols" in the syslog on the VPN server. Disabling
encryption on the VPN server appears to fix this, however that's not a good
solution, the odd thing is I'm having this problem with a Windows XP and
Windows 7 workstation (client) (same house hold), the only thing I can
think of is that the modem for the internet connection is faulty, however
the ISP wont replace it since the internet is working.

Any suggestions anyone on what might be happening exactly? Or a way to
prove it's the modem?



On Mon, Apr 23, 2012 at 5:58 PM, James Cameron <[email protected]> wrote:

> Was there a later kernel?  The reason I ask is that the pptp project has
> seen some problems in the past that were due to kernel bugs in the MPPE
> kernel module.  Unsupported protocol messages were seen.
>
> Please capture pppd debug logs and share them.  These logs would show
> the negotiated options at the start of the connection.  The negotiations
> can be compared between working and failing client.
>
> http://marc.info/?l=poptop-server&m=110237762920868&w=2 is an old
> message with a summary for how to enable debug logs.
>
> --
> James Cameron
> http://quozl.linux.org.au/
>

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