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 From:  "James Steven" <JSteven at redlinesoftware dot co dot uk>
 To:  <chrispatch at intrstar dot net>
 Cc:  <m0n0wall at lists dot m0n0 dot ch>
 Subject:  RE: [m0n0wall] l2tp vpn passthrough
 Date:  Fri, 19 Nov 2004 16:37:55 -0000
How do I configure protocol 50?  Is this not a TCP port?
-----Original Message-----
From: chrispatch at intrstar dot net [mailto:chrispatch at intrstar dot net] 
Sent: 19 November 2004 16:33
To: JSteven at redlinesoftware dot co dot uk
Subject: RE: [m0n0wall] l2tp vpn passthrough

you need udp 500 and 4500 (isakmp , isakmp with nat traversal) protocol 50
(ESP) udp port 1701 (l2tp)

tcp port 1723 and protocol 47 (gre) are used for pptp.

-----Original Message-----
From: James Steven [mailto:JSteven at redlinesoftware dot co dot uk]
Sent: Friday, November 19, 2004 10:42
To: chrispatch at exchange dot nt dot intrstar dot net
Subject: [m0n0wall] l2tp vpn passthrough

How can I make sure that packets for a Windows 2003 Server l2tp/ipsec vpn
are passing through m0n0wall?  The M0n0wall is situated behind another
firewall and currently has open tcp ports 50, 51 and udp ports 4500 and
1723.  Should this be enough to do it or do I need to use the IPSec VPN
Thanks for any help.

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