Checkpoint FW disconnects calls bacause of too many SIP re-invites

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  Within our network we have Checkpoint firewalls. After the latest FW software-upgrade we discovered that all Communicator calls dropped after 90 seconds. This happens because the Checkpoint Smart Defense won´t allow more than three SIP re-invites. It seems that a communicator call (no matter if it is between Communicator clients or towards PBX) makes two SIP re-invites in the beginning of the call and after 90 seconds another two re-invites. How do I change this ? The FW-guys raised the amount to 10 and the calls last for 5 minutes before they drop.

   

  I can raise the amount of allowed re-invites even more but I can´t disable the feature in Checkpoint.

   

  /Torbjörn Zars

  WM-data Sweden 

  Tuesday, November 27, 2007 12:12 PM