Firewall Wizards mailing list archives

RE: VPN Problems


From: Ben Nagy <ben.nagy () marconi com au>
Date: Tue, 14 Aug 2001 12:58:49 +1000

Hping2 can be used to do this under linux - you can specify protocol and
TTL. I've also seen an application around which has a script wrapper for
Hping2 to kludge a protocol traceroute, but can't remember where, sorry.

Link: http://sourceforge.net/projects/hping2/

Cheers,

--
Ben Nagy
Network Security Specialist
Marconi Services Australia Pty Ltd
Mb: +61 414 411 520  PGP Key ID: 0x1A86E304 

-----Original Message-----
From: Lucas Thompson [mailto:Lucas.Thompson () watchguard com]
Sent: Tuesday, August 14, 2001 7:49 AM
To: 'Ryan Russell'; Jason Wu
Cc: firewall-wizards () nfr com
Subject: RE: [fw-wiz] VPN Problems


This is very often a problem where ISPs filter IP 50 or 51.  
A really good
way to test it is to use the traceroute that comes with OpenBSD.
Openbsd's traceroute allows you to use arbitrary IP protocol 
numbers instead
of just UDP or ICMP like most of them.  Then sniff at your 
site(s) to see if
it gets through.

I just wish I had a Linux port of it  :)

lucas
[...]
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