[Asterisk-Users] SIP registration behind Linksys WRT54G

[Rich Adamson]

I've got a 7960 behind a Linksys wireless box and its working just
fine with nat=yes in the sip.conf. Has been for over a year. Not
sure of the model though.

------------------------
> 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.
> >