Great Circle Associates Firewalls
(July 1995)
 

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Subject: Re: UDP Proxying?
From: steveg @ cseic . saic . com (Stephen Harold Goldstein)
Date: Fri, 14 Jul 95 10:56:25 EDT
To: ferioli @ disaster . com
Cc: FIREWALLS @ greatcircle . com
In-reply-to: <199507132140 . RAA21255 @ eniac . disaster . com> (message from Michael Ferioli - D&D Consulting on Mon, 10 Jul 1995 17:03:26 -0400)

Michael D. Ferioli writes:
>
>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?
>

I'm interested in solutions to this problem as well, though I'm more flexible -
what type of firewall solution would be best for this type of
application?  Off the top of my head I would guess that one of the 
packet filtering products that maintains state information would do the job 
(Firewall-1 comes to mind), but can these handle opening up for more than 
one (in this case 6) outgoing ports based on one incoming request?

Stephen Goldstein     steveg @
 cseic .
 saic .
 com
       Disclaimer:    That's not what I said.


References:
  • UDP Proxying?
    From: Michael Ferioli - D&D Consulting <ferioli @ disaster . com>
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