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<p class=MsoNormal>I was looking at my CLI the other day, and found a lot of
those types of messages:<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>NOTICE[2242]: chan_sip.c:14383 handle_request_invite: Call
from '' to extension '0004525551690000' rejected because extension not found.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Looking at the IP, it originated from Asia and was clearly
an attempt to screw with my Asterisk server. My quick fix was simply to
block the IP adress at the firewall level. So that was the end of that.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>What I don`t get is how the person got that far. How
could he attempt to dial extensions (even though he probably was in the default
context which has nothing in it) when all my SIP peers are either password
protected or linked to a fixed IP. And, more to the point, "Call
from `` " means a call from what exactly? It's not one of my phones,
it's not one of my peers…..Shouldn't the lack of a peer be enough to
block the would-be hacker from tyring extensions?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Any help is appreciate, I clearly don't understand SIP
peers.<o:p></o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><b><span lang=FR
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'><o:p> </o:p></span></b></p>
<p class=MsoNormal><b><span lang=FR style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>Mike<o:p></o:p></span></b></p>
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