[Serusers] Re: RESOLVED - nathelper / calling UAs behind symmetric NATs

Olle E. Johansson oej at edvina.net
Tue Dec 30 23:08:52 CET 2003


Thilo Salmon wrote:
> The UA in question is indeed a Grandstream phone and I have not seen any
> others showing this behaviour. On a quest for such agents you can
> probably skip any agents without STUN support, I guess. Afaik, that does
> not leave you with too many options. I personally only know about
> Grandstream, X-ten and Snom. If you know others, I would be very
> interesting to learn which ones.
Check here for a list, but as of now, it's the same as yours:
http://www.voip-info.org/tiki-index.php?page=STUN

> On a side: A good start would also to avoid symmetric NATs. I would love
> to compile a list of routers which operate symmetric NATs to tell my
> customers to avoid them. I tried a number of residential routers, but
> all of them did some sort of coned NAT. Who could name symmetric NATs?
Someone started a list here:
http://www.voip-info.org/wiki-NAT+survey

It would be great if we could add to that list.

Regards,
/Olle




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