[Asterisk-Users] UDP Ports scan on firewall

[Steve Totaro]

qualify

http://www.voip-info.org/tiki-index.php?page=Asterisk%20sip%20qualify
  ----- Original Message ----- 
  From: Chris Smales - Magenta Solutions 
  To: asterisk-users at lists.digium.com 
  Sent: Wednesday, July 07, 2004 10:09 AM
  Subject: [Asterisk-Users] UDP Ports scan on firewall


  I'm using Asterisk to registry several DDI's to a sip proxy (pipecall.com). Everything works fine apart from several times a day my firewall (zywall70) reports a UDP port scan attack from the pipecall sip proxy. I can't seem to work out why this should be. All I could think was that the sip registry was expiring and causing some strange probing from the proxy, is it possible to alter the expiry on a sip channel or does anybody have any other ideas?

  Thanks,

  Chris
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