Subject: help needed regarding l2tp - nat issues

From: Surendranath <[email-masked]>
Date: Sat, 27 May 2000 19:09:31 +0500

Hi 
My name is surendra, working with ROC, Hyderabad, India.
I have a question regarding l2tp-nat issues.

My NAT server is in between LAC and LNS.
As the Source port of a packet, which is comming from LNS, is 
may not be equal to 1701, I want to exclude the source port field
to find a match at NAT server. I am thinking, this is the only change,
I need to do in nat server to deal with l2tp packets. 
Am I missing something??

Can anybody please explain me, what is the actual problem apart from
this in l2tp-nat case? Is there any need to look into Tunnel Id/ Session Id 
in l2tp header and to do any demultiplexing?   Because, to extract these
from Assigned-Tunnel-ID/ Assigned SessionId AVPs, NAT server dont know the
shared secret. 

thanks,
surendra.