Re: [Linphone-users] Random Incoming calls

[Dovid Bender]

I met Yealink and asked them why they had it enabled by default. They said a lot of customers have different proxies and they would get more support tickets if it was set to disabled. For firewalls how would this not help? If they have a stateful firewall it would only accept packets where there is a session out. So if they don't send a packet out there should be none allowed back.

On Fri, Jun 11, 2021 at 12:01 AM Trent Creekmore <trent@lindows.org> wrote:

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
Sent: Thursday, June 10, 2021 6:48 PM
To: linphone-users@nongnu.org
Subject: Re: [Linphone-users] Random Incoming calls

 

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:

I am using Linphone as a way to connect to a comrex ACCESS for radio reports.

Recently I keep getting incoming calls that just don’t stop. This has happened with some but not all of us using this.

Any idea of how to change settings to stop this?

The second thing is that occasionally I can’t get an ip address on some installs. Instead I get a weird number after my name instead of an IP.

 

Would really love to email with someone because this works great for me and I would like to fix these small but very annoying problem.

 

 

 

Ray Martel

Executive Producer WCBS Mets Radio Network,

WCBS Newsroom Operations Manager

 

Audacy | New York

345 Hudson St, 10th Fl

New York, NY 10014

O: +212-524-2904

M: +917-414-0219

Ray.Martel@audacy.com  

WCBS 880

 

 

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