Re: Remote Phone and Server Behind NAT

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Remote Phone and Server Behind NAT
\ Chris Shipman (8 May 2007)
. \ Joshua Colp (8 May 2007)

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Subject:	Re: Remote Phone and Server Behind NAT
Group:	Asterisk-users
From:	Joshua Colp
Date:	8 May 2007

Chris Shipman wrote:
> I have an asterisk Server (2.1.17) behind NAT with a static IP and port
> forwarding enabled. The remote SIP phone is also behind NAT.
>
> I've gotten them to work except when I specify a secret. When there
> is a secret configured the phone can not authorize. Has anyone
> gotten this to work?
>
>
> Regards,
>
>
> Chris
>

I've seen this happen with some SIP aware solutions. They try to fix up
the headers with the public IP address and end up screwing up the
authentication hash so that it doesn't match when computed on the other
side. What is doing the NAT?

Joshua Colp
Software Developer
Digium, Inc.

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