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New Member

PLEASE !! ATA 186 and NAT (over H323)

Hi everybody,

I have a simple question. I am running several ATA's 186 attached to a Clarent and Cisco GK. They have public IP's and everything is working fine. We want to use some of this public IP's to other things, I would like to know if it is possible to make the ATA 186 work with NAT (using H323). I am using a linux box as a firewall and router...and I had no success on NAT with them. I read that there is a path for iptables that help H323 with NAT ...but does anyone have a previous experience of it in a cisco Voip scenario ???

Hope someone could help me....

Regards,

1 REPLY
New Member

Re: PLEASE !! ATA 186 and NAT (over H323)

Well, to NAT H.323 you may need to set up an application-layer gateway (ALG) and require at least IOS version 12.2(2)T as per these articles:

http://www.cisco.com/en/US/partner/tech/tk648/tk361/tech_brief09186a00801af2b9.html

http://www.cisco.com/en/US/partner/about/ac123/ac147/ac174/ac182/about_cisco_ipj_archive_article09186a00800c83ec.html

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