Why do I periodically get several repeated calls from "101"?
bradwn:
Correct, SP1 is VoIPMyWay, nothing is set as SP2.
I'll check with them. I picked up on a couple of the calls, nothing audible on the other end.
wintek:
Quote from: bradwn on May 06, 2011, 12:21:58 pm
Correct, SP1 is VoIPMyWay, nothing is set as SP2.
In VoipMyWay's vPanel, set 101 in the incoming routing to blacklist. That will keeping from getting to the Obi.
voipmyway:
This is due to script kiddies running tools looking for insecure voip services. What happens is they dial looking for extensions that are improperly configured.
This has been escalated and is being researched as what we can do on the service side, but since we are not the makers of the obi or have one for testing we can not offer a answer on to how to block at the obi. Have you tried what the other users recommended about setting up the block routes on the obi?
voipmyway:
Here is the official response / fix
Change the port of the user's local SIP port. This isn't relayed through our network.
It was more than likely someone scanning their ISPs range for open PBX servers.
It can't be blocked as it wasn't sent through our network. We have received several reports of this on various ISPs. Some people are scanning large blocks of IPs in an attempt to find Asterisk or SIP servers that are not secure. They are scanning ranges of IPs to see if there are open PBXes on them, then on any of the ones where there are open PBXes, they attempt to use them to make outbound calls.
bradwn:
Ok, a month later and after changing the port #, and I'm still getting calls occasionally. The latest ones occured on 5/21 and 5/23, from Peer Number "200" and "asterisk" (4 times). How do I make this stop? Can I block any calls that are not from a regular telephone number? Do I have to just live with this?
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