Great Circle Associates Firewalls
(July 1995)
 

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Subject: UDP Proxying?
From: Michael Ferioli - D&D Consulting <ferioli @ disaster . com>
Date: Mon, 10 Jul 1995 17:03:26 -0400
To: FIREWALLS @ greatcircle . com

Here's an interesting firewall problem:

You have an internal network protected by both a packet filtering router and
a dual homed proxy gateway.  You introduce a video conferencing package that
runs over the Internet that uses 6 UDP ports.  One port is static and
listens (a la FTP) then 6 UDP ports over 1000 are setup.  What are the options?

Assume the gateway is running a flavor of BSD and a non-transparant proxy
agent.  Any ideas?

Mike

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 
Michael D. Ferioli                     Internet: ferioli @
 disaster .
 com 
D&D Consulting                              CIS: 73542,2601 
Albany, New York                          PHONE: (518) 462-0900   
                                            FAX: (518) 432-1829 
For info on D&D, mail to info @
 disaster .
 com or http://www.disaster.com
INTERNET/UNIX/SECURITY/LAN/WAN SPECIALISTS AND MORE ALL UNDER ONE ROOF
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~



Follow-Ups:
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From: Adam Safier <asafier @ explorer . csc . com>
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