[asterisk-users] one for your filters

[Gordon Henderson]

On Wed, 23 Jun 2010, Jeff LaCoursiere wrote:

> Some !@$#@@# in the Czech Republic used one of our SIP accounts to place
> four thousand calls to what appears to be a toll number in Zimbabwe last
> night.  Filter 82.150.165.5.
>
> A more overriding problem for me is how do we know what *destinations* to
> filter so this idea of war dialing a toll number is something we can
> cutoff before it gets to our upstream provider?  Is there some collected
> list of toll prefixes that I can filter on?

How did they guess the SIP username and password? That's what I'm more 
concerend about...

Gordon