[Asterisk-Users] SIP registration behind Linksys WRT54G

[Tomas Florian]

Is your problem on the same model of Linksys? WRT54G?  I haven't had a
chance to try some other Linksys routers so I'm curious.

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Scott
Henderson
Sent: Saturday, April 23, 2005 7:20 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [Asterisk-Users] SIP registration behind Linksys WRT54G

Please make sure you post any solution you find to this issue to the 
list I have been frustrated by this as well.

Scott Henderson
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Tomas Florian wrote:

>Hello,
>
>I'm having some major problems getting SIP phones to register whenever I
put
>them behind a Linksys router. The same phones will register behind any
other
>NAT (I've tried 3 others without problems)
>
>I've been debugging using Ethereal and these are the differences that I
>found between Linksys WRT54G and a Monowall Router as an example (Monowall
>router is one of the many that work fine for me):
>
>REGISTER sip:asterisk.mydomain.com
>
>	Monowall (good registration)
>
>	- Via: SIP/2.0/UDP 192.168.10.199;branch=...
>	- Authorization: DIGEST ..., uri="sip:asterisk.mydomain.com", ...
>	- Contact <sip: 204 at 192.168.10.199;user=phone>
>
>	Linksys WRT54G (Bad registration - 403 Forbidden)
>	
>	- Via: SIP/2.0/UDP 66.x.x.166;branch=...
>	- Authorization: DIGEST ..., uri="sip 66.x.x.166:5060", ...
>	- Contact *
>
>
>As you can see the difference seems to be that with the Linksys the SIP
>request has it's WAN IP + port (66.x.x.166) whereas the request from behind
>a monowall has the LAN IP of the phone 
>
>What is the explanation for this difference?  Needless to say - I don't
have
>any special port forwarding enabled on either one of these routers and I'm
>using the identical phone with identical configuration for both tests.
>
>I have outgoing proxy in my phone's configuration but it almost looks like
>it's disregarding that option when behind the Linksys router.  
>
>Another interesting thing to note is that I have tried connecting to some
>other proxy from behind Linksys (not my own asterisk but some other
provider
>- I don't know what they are running)  I was able to register without a
>problem.  Interestingly, the registration request looked identical to the
>monowall one (Via: LocalIP , uri: FQDN ) ... unfortunately because I am not
>the system admin on that VoIP server I can't login to see what
configuration
>they have in order to copy it.
>
>I'm really out of ideas ... if anyone has any hints of what else I could
>check out I would really appreciate that.
>
>Thank you,
>Tomas
>
>
>
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