can SIP work with ISA

Norman Maina
Norman Maina used Ask the Experts™
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Dear Experts,

Is it possible to allow SIP traffic from an IP phone to pass through ISA 2006 to an IP PBX that is outside the network but sitting on a public IP address?

regards,
Norman
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RETIRED
Top Expert 2006
Commented:
No version of ISA supports SIP.

Author

Commented:
and there is no software add-on or filter out there build for ISA to work with SIP?
Keith AlabasterEnterprise Architect
Top Expert 2008

Commented:
You may want to have a look here for a definitive. http://social.technet.microsoft.com/Forums/en-US/Forefrontedgegeneral/thread/c2eb3829-d097-43d3-92eb-92953cdac318/

ISA's replacement, TMG, does support SIP traffic in the true sense but ISA did not. Results have been varied as you can see.

Keith
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Rick HobbsRETIRED
Top Expert 2006
Commented:
Yes, Forefront Threat Management Gateway 2010 recognizes SIP traffic, but the original question qas about ISA.   ISA in no version supports SIP.
Keith AlabasterEnterprise Architect
Top Expert 2008

Commented:
Read my post properly.....

Author

Commented:
@Keith-that forum is referring to to ISA 2004 while am talking about ISA 2006.
Keith AlabasterEnterprise Architect
Top Expert 2008

Commented:
Not relevant as the concept is identical in the sense that neither 2004 or 2006 could support SIP traffic directly. Jim Harrison was our Guru on ISA and TMG until he moved on last year over to the CSS team.  The point being that if Jim states it is not possible then it is a fact of life.

Author

Commented:
I've requested that this question be closed as follows:

Accepted answer: 0 points for NormanMaina's comment http:/Q_27241849.html#36320969
Assisted answer: 125 points for rickhobbs's comment http:/Q_27241849.html#36320907
Assisted answer: 125 points for keith_alabaster's comment http:/Q_27241849.html#36321000
Assisted answer: 125 points for rickhobbs's comment http:/Q_27241849.html#36325740
Assisted answer: 125 points for keith_alabaster's comment http:/Q_27241849.html#36326883

for the following reason:

thanks
Keith AlabasterEnterprise Architect
Top Expert 2008

Commented:
Yes - I object for a number of reasons.

First, simply the fact that you did not bother to come back and close your question in the first place.
Second, Accepting your response as the answer (where you are raising a query) which cannot be the solution by definition and simply assigning equal points to every response you did get.
Third, Rickhobbs gave you the correct answer - that should be the accepted one.
Fourth - let's face it, you have only requested closing this question because you came back to ask a new question.
http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/Server/2003_Server/Q_27387074.html

Keith AlabasterEnterprise Architect
Top Expert 2008

Commented:
Thanks - spot on

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