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Connectivity Requirements for a Cisco IP Phone Connection Through a Firewall ?

Posted on 2008-11-07
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Last Modified: 2012-05-05
Hello,

I've got a need to connect some Cisco IP phones through an IPSEC tunnel. This involves connectivity to both the remote Cisco Call Manager server and other IP phones.
I'm all set with the IPSEC piece and am now looking to open up only the ports required. Can anyone tell me what those ports are?

Thanks.
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Question by:HNESysAdmin
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cstosgale earned 2000 total points
ID: 22918153
If you are using cisco hardware, all you need to do is allow SCCP (2000) in both directions. Although other ports are required, so long as SCCP inspection is enabled, it will automatically open the appropriate ports.
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by:HNESysAdmin
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Thank you for the information.
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