[Serusers] limiting no. of concurrent calls ?

[Hendrik Scholz]

Hi!

Mike W wrote:
> Thanks for the pointer,  i need to look at the total calls at the proxy.
> It could be a counter that increments at a INVITE (and subsequent OK)
> and decrements at a BYE/ CANCEL

You'll still run into the very same problems. You have to take INVITEs 
without Authentication into account. How about retransmissions?
People might want to throw advertisements for Session Border Controllers 
at you ;)

> Is this something that can be configured/ customised ?

If it's the plain number of requests per second that you want to allow
not taking any specific behaviour into account you might want to try
the ratelimit module from CVS.

What's the problem you are facing? Are you seeing DOS-like attacks?
I'm asking as I'm interested in implementing countermeasures.

Hendrik

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