Re: VoIP through ISA
- From: "Deus, Attonbitus" <Thor@xxxxxxxxxxxxxxx>
- To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
- Date: Thu, 09 Jan 2003 09:46:53 -0800
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At 09:34 AM 1/9/2003, you wrote:
>http://www.ISAserver.org
>
>
>We are currently running Cisco 7960 phones through a Cisco 506e pix. We
>would love to run it through ISA for testing to push down to some of our
>clients. Unfortunately this seems to be unmapped territory and our VoIP
>provider doesn't know anything about ISA. We played around with it before
>and managed to pass calls through but when you pick up the phone there was
>no voice. Only keytones passed through. Does anyone have any experience
>or know of any documentation on the dynamic porting that needs to be done?
At bit of an off-topic response, as I can't answer the direct question
regarding the 7960 phones, but I run the NEC Dterms for my VoIP, and have
always used a VPN for client to system communications- one, you've got the
full ip stream, and secondly (and most importanly) you've got encrypted
traffic. Ofir Arkin has done lots of research into the vulnerabilites
present in systems like this, and having the traffic in the clear between
client and server is not recommended.
I was worried about latency within the VPN, but have been doing it for a
couple of years now with no issues.
T
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