Search the logs and you will see the IP address and any calls not reaching cdr because the invite was malformed or didn't match users. The premise is the same. If you can pinpoint the network they are generated from so you can block it.
We use cps, country block and soon user agent and other blacklisting. We also use a 3rd party voip abuse blacklist. All if this is done at the firewall. On Dec 30, 2011 5:39 PM, "Ken Ridley" <[email protected]> wrote: > Hi Tony,**** > > I have not posted this question before**** > > I searched the emails I have received from this group, and only found a > reference to limiting CPS**** > > I do not think this would help, because the calls were 15 to 30 seconds > apart**** > > ** ** > > Ken**** > > ** ** > > *From:* [email protected] [mailto: > [email protected]] *On Behalf Of *Tony Graziano > *Sent:* Friday, December 30, 2011 2:25 PM > *To:* Discussion list for users of sipXecs software > *Subject:* Re: [sipx-users] Sip Hacking?**** > > ** ** > > I thought your options were covered when you asked earlier this week.**** > > On Dec 30, 2011 5:17 PM, "Ken Ridley" <[email protected]> wrote:**** > > I found about 30 failed calls in our CDR history from user 200 to 5 > different numbers**** > > There is no User 200 on our system**** > > We have remote users, so there are ports opened on the router to allow > them to connect, no VPNs**** > > Is this something to be expected? **** > > All of the calls failed with a 483 error, is this the sipx way of blocking > invalid users, or did I just get luck this time**** > > If I’m just lucky what can I do to prevent this?**** > > * ***** > > * ***** > > *Ken Ridley* **** > > **** > > > _______________________________________________ > sipx-users mailing list > [email protected] > List Archive: http://list.sipfoundry.org/archive/sipx-users/**** > > _______________________________________________ > sipx-users mailing list > [email protected] > List Archive: http://list.sipfoundry.org/archive/sipx-users/ >
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