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Re: Multicasts and Firewalls


Chronological Thread 
  • From: Peter John Hill <>
  • To: Fred Zalupski <>, I2 Multicast Working Group <>
  • Subject: Re: Multicasts and Firewalls
  • Date: Thu, 15 May 2003 13:37:06 -0400

Apparently with PIX firewalls, you need to have a router in front of the firewall and a gre tunnel through the firewall for multicast traffic. Let's have a vote, who thinks this sounds like a fun thing to set up? It would be nice if the PIX could do everything at layer 2 and did not need to be the router. I do believe that the newer code does allow that. I think they also added dhcp relay and ospf to the devices.

Of course, here at CMU, we do not have any firewalls that are run by the
computing services organization, so I may not be the best person to help you.

here it the link to cisco's doc, cco account req'd
<http://www.cisco.com/en/US/customer/products/hw/vpndevc/ps2030/products_configuration_example09186a00800943fe.shtml>

--On Thursday, May 15, 2003 9:33 AM -0400 Fred Zalupski
<>
wrote:

One of our member institutions is looking for advice from someone using a
firewall in a multicast-enabled environment. They recently installed a
Nortel Shasta (same look and feel as Checkpoint, he reports) and subsequently
discovered a problem receiving content. Anyone willing to pass along
advice or experience, please contact me and I'll put you in touch with my
subscriber.

Thanks and regards, all,

--
Fred F. Zalupski
Engineering and Operations Coordinator
MAGPI GigaPoP, University of Pennsylvania
tel 215-573-6417
fax 215-898-9348
www.magpi.net









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