Why does zoiper attempt to register with username="yes" ? and how can I stop this?

Question

Here is the SIP packet sent by zoiper (below). It is causing an error as there is no user called "yes", and so fail2ban kicks in and blocks the IP address.

Thanks in advance

Clive

REGISTER sip:196.22.x.x;transport=UDP SIP/2.0.
Via: SIP/2.0/UDP 192.168.1.102:57607;branch=z9hG4bK-524287-1---298a99c922eb0aca.
Max-Forwards: 70.
Contact: <sip:yes@192.168.1.102:57607;rinstance=0586945545f5571e;transport=UDP>.
To: <sip:yes@196.22.x.x;transport=UDP>.
From: <sip:yes@196.22.x.x;transport=UDP>;tag=fc50b27f.
Call-ID: DMpxmHxiyC0KRkt4M9Mrtw...
CSeq: 5 REGISTER.
Expires: 60.
Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE.
User-Agent: Zoiper rd82a609.
Allow-Events: presence, kpml, talk.
Content-Length: 0.

Comments

It seems that you have set an account with username "yes", if this is Zoiper for Android, you should go to Zoiper ->Settings -> Accounts  and check the usernames of the accounts which you have set.

---

Hi.

Thanks for the reply.

It seems Zoiper automaticaly does that to keep open the NAT.

The username is set correctly, to something other than "yes"  .

I was wondering if anyone else has this same behaviour.

None of the optional settings are set, only the gateway, username and password.

Thanks and regards

Clive

---

Hi,

Not possible to whitelist your provider IP range?

I am using different ports and TCP, but maybe you can only use UDP.

Sorry I am not using fail2ban.

Regards,

Paul

---

Hi Paul

The IP range is white listed, and that is why these registrations are reaching the SIP server.

I am still not sure why Zoiper sends these registration packets at all, and how one can stop this behaviour.

Thanks and regards

Clive

---

Hi Clive,

When I look at my logs I do not see such behaviour.

I assume you are using Linux?

Are you sure there is no account set with yes?

You did not forget to uninstall an app on your phone?

Sorry I am guessing what could be wrong.

Its a registration and if it succeeds it will use a keep alive, it wont re-register all the time.

Regards,

Paul