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VoIP, Firewalls and NATs

For robustness Ingate offers the best of breed in this area, as they are proxy based.

Cisco, Netscreen, and Checkpoint offer application level gateway solutions, as well as linksys (also cisco).

Microappliances also had a proxy solution but I have not heard much from them on their product in some time.

These are all good starting points if you are performing research.

Chris

Arturo Servin wrote:



           I am doing a personal research about VoIP security and the use
of firewalls, IPS and NAT. I remember some issues a couple of years ago
specifically with NAT and H.323. I guess there was the same problem with
SIP. Also I remember a topic in this email list about SIP proxys. Do you
know if there are still issues with Firewalls/NAT/IPS and VoIP, how the
vendors and protocols are dealing with this? Any comments?



Thanks in advance,

-as

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