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Ghost Calls from Port Scanning
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ctiefel Offline
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Posts: 24
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Post: #21
RE: Ghost Calls from Port Scanning
(12-04-2014 07:24 AM)bnelson Wrote:  Remstar:

Changing to TCP an a non 5060 port has worked for us in stubborn scanner situations. Scanners are generally kinda lazy and don't hit TCP ranges...yet.

I too am having trouble getting sip trust control to work properly. It works great if we only use our registration server's A-record, but using DNS-SRV records for redundancy results in a rejection since the SRV record technically doesn't match the actual name of the server communicating. The A-records are being stored in the local DNS cache, and are provisioned into the cache manuallly.

Anybody had success using this feature? Shuffling ports, and suggesting higher power routers with a decent firewall are not always good options.

How is changing TCP port doing anything when SIP uses UDP?
12-04-2014 07:31 AM
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Messages In This Thread
Ghost Calls from Port Scanning - ctiefel - 11-08-2013, 10:01 PM
RE: Ghost Calls from Port Scanning - Fuur - 11-25-2014, 07:01 PM
RE: Ghost Calls from Port Scanning - ctiefel - 12-04-2014 07:31 AM

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