[Blink] router configuration?

Dean Willis dean.willis at softarmor.com
Thu Feb 24 22:11:49 CET 2011

On Feb 9, 2011, at 8:49 AM, Adrian Georgescu wrote:

> Hi Dean,
> 9 out 10 connectivity problems are SIP ALG related. The rest are firewalls that explicitly block SIP traffic.
> Most if not all residential routers have nowadays a broken SIP-ALG inside. No manufacturer really understands SIP so they do not even acknowledge that they break things by adding such 'support' into their routers, forget about fixing their implementation that was completely un-necessary in the first place. All SIP providers have a NAT traversal solution in place that simply works.  The only way to eradicate the SIP ALG plague is to mandate the usage of TLS for SIP transport in a future iteration of the SIP protocol specs. And the chance of this happening is close to zero...
> Adrian
> On Feb 5, 2011, at 6:51 AM, Dean Willis wrote:

I haven't found a SIP ALG in any of the home NAT routers I have, and I've accumulated a fairly large collection. Of course, there might be one there, but if so it hasn't caused me enough trouble that I've had to find it yet.


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