VPN and IPtables

[Zbigniew Koziol]

Isnt VPN using a protocol gre ? I had the problem with openBSD working 
as a firewall. openBSD by default does not allow to use gre protocol 
(Windows does). Linux probably does not either.

zb.

Lennart Sorensen wrote:
> On Wed, Sep 15, 2004 at 03:37:56PM -0400, Ilya Palagin wrote:
> 
>>Experimenting with my SonicWall VPN client, I allowed everything to/from my
>>internal Windows machine.  It didn't help.  Windows firewall shows packets
>>between ports 500 (I disabled this one too for tests), iptables logger shows
>>activity as well.  There is a traffic, but no VPN connection.
> 
> 
> Allow all port udp 500 and protocol 50/51 (normally 50) traffic and
> forward them to the inside machine.  Then see if it works.
> 
> Lennart Sorensen
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