[Serusers] NAT ping and consumer router

[Richard]

Hi,

It can quickly become a long discussion if no NAT traversal support is UA's
fault. Most high end UAs are traditionally geared towards business market
where there is no NAT issue. That's why NAT supports are not very good on
them. Also at this moment there are just too many solutions which are not
compatible to each other. 

Going back to the real problem... In the short term, I think that the
quickest solution is to find out a NAT device which allows inbound traffic
to refresh NAT binding timer. I know that cisco PIX is one of them, but
would like to find out if any lower end NAT firewall/router have it too...



Thanks,
Richard




-----Original Message-----
From: Jiri Kuthan [mailto:jiri at iptel.org] 
Sent: Sunday, August 22, 2004 2:56 PM
To: Richard; 'Jesus Rodriguez'
Cc: serusers at lists.iptel.org
Subject: RE: [Serusers] NAT ping and consumer router

I beg to disagree -- we should not create to much workarounds around
imperfect clients. In particular, incomplete NAT traversal support 
is a serious shortcoming in a UA and I would discourage people from 
using such devices.

Other front to attack would be NATs -- there is an effort in IETF
focusing on that, but that's obviously an activity which has no
impact on currently installed base.

-jiri

At 01:57 AM 8/23/2004, Richard wrote:
>Hi Jesus,
>
>Changing UA is not always a viable solution due to pricing and other
>technical issues. Every UA has something broken in its implementation and
it
>would be very costly to change it because one thing (in this case, NAT) is
>broken.
>
>Thanks,
>Richard
>
>
>-----Original Message-----
>From: Jesus Rodriguez [mailto:jesusr at voztele.com] 
>Sent: Sunday, August 22, 2004 8:59 AM
>To: Richard
>Cc: serusers at lists.iptel.org
>Subject: Re: [Serusers] NAT ping and consumer router
>
>
>Use an UA that supports it (Sipura or Cisco for example).
>
>Saludos
>JesusR.
>
>-------------------------------
>Jesus Rodriguez
>VozTelecom Sistemas, S.L.
>jesusr at voztele.com
>http://www.voztele.com
>Tel. 902360305
>-------------------------------
>
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--
Jiri Kuthan            http://iptel.org/~jiri/