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From: | Trent Creekmore |
Subject: | Re: [Linphone-users] Random Incoming calls |
Date: | Thu, 10 Jun 2021 23:01:30 -0500 |
A firewall is not going to help. On many SIP telephones this can be an issue. On Yealink they have a setting labeled “Accept SIP trusted Server only” which will cause those ‘ghost calls’ to stop. I am not sure why they do not have it enabled. Seems this should be default on all SIP telephones these days. I have not seen such a setting on LinPhone, but I would of thought such security would be in the code. From: Linphone-users <linphone-users-bounces+trent=lindows.org@nongnu.org> On Behalf Of Dovid Bender Without knowing your set up if I had to guess the calls you are getting are most likely from attackers out there that are looking for vulnerable phone systems to compromise. They will send calls to random IP's and if they find a vulnerable system they make calls on the phone systems owner's expense. Some phones have an option to disable such calls but I don't see one on Linphone (at least not in the version I have here). A simple firewall should be able to block such calls. On Thu, Jun 10, 2021 at 5:36 PM Ray Martel <Ray.Martel@audacy.com> wrote:
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