HOWTO: Thwarting SIP Scanners during Set-up
ianobi:
Quote
I changed it to:
{(‘curt00’):aa},{>12221234567:ph1}
where 12221234567 is my AuthUserName. Did I do it right?
Looks good to me.
unmesh:
Quote from: Mango on June 16, 2015, 07:21:13 pm
Better yet, place your device behind a firewall.
There have been reports - very few, but not nonexistant - of scanners finding and attempting to exploit VoIP equipment with port numbers above 6000. If your VoIP equipment is behind a restricted cone NAT firewall, the firewall will only allow traffic from your service provider to reach your equipment. For everyone else, there will not be any indication that VoIP hardware even exists.
My favourite firewall is a Tomato router.
I switched to a Tomato router because the other fixes were not working. The phone still rings at midnight >:(
I have GV configured on SP1 and nothing on SP2 on a Obi110 with the latest firmware. Any suggestions?
Mango:
Google Voice is not vulnerable to this type of attack.
Please check Voice Services >> SP2 Service >> Enable and verify it is unchecked.
If it is already that way, or if that does not solve your problem, then your ringing is caused by something that is not a SIP scanner.
Does your ATA have a static IP address? If not you might want to set one up. I seem to recall a similar situation that caused the phone to ring when the ATA renewed its IP.
I assume you've checked your call history and found nothing? If there is something around the time of the calls, please post details.
unmesh:
Quote from: Mango on May 11, 2016, 07:09:41 pm
Google Voice is not vulnerable to this type of attack.
Please check Voice Services >> SP2 Service >> Enable and verify it is unchecked.
If it is already that way, or if that does not solve your problem, then your ringing is caused by something that is not a SIP scanner.
Does your ATA have a static IP address? If not you might want to set one up. I seem to recall a similar situation that caused the phone to ring when the ATA renewed its IP.
I assume you've checked your call history and found nothing? If there is something around the time of the calls, please post details.
Enable is unchecked and there is nothing in the call history. DHCP is set to issue 1440 minute leases and the Obi is renewing at about 7pm.
Let me try a static IP address tonight.
unmesh:
Unfortunately, setting up a static IP address did not fix the problem.
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