[asterisk-bugs] [JIRA] (ASTERISK-25372) SIP/2.0 401 Unauthorized for incoming calls.

Sun Sep 6 18:45:33 CDT 2015

    [ https://issues.asterisk.org/jira/browse/ASTERISK-25372?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=227501#comment-227501 ] 

Agasthian P commented on ASTERISK-25372:
----------------------------------------

Hi Rusty Newton,

Thanks a ton for your suggestion. It worked without the insecure=invite,port and removing the secret from the extensions. This was my first query and i never thought i would ever get a reply for this, but just feel good that the team took time to go through this and reply. I thought this is a bug, i am really sorry for that, below is my explanation. I have worked in other companies as an engineer where getting a reply on bug submission to an engineer from the same company takes weeks. And this is quite awesome as an Opensource thingy. I hope i am able to contribute more to the team.

Why i felt it is being rejected by the Asterisk server directly, but not by the peer is because it was Asterisk sending "SIP/2.0 401 Unauthorized" directly for the Invite sent by the other PBX.
If this was because of the SIP extension, i would expect it later after communicating with the extension.

Don;t you think, the logs for the sip call is mis-leading and not as per RFC ? Or maybe i might be still missing something important.

CUCM - Asterisk

Invite                      --->
401 Unauthorised <---
Ack                        ---->

Logs for the failure call :-

INVITE sip:2723 at 20.1.1.58:5060 SIP/2.0
Via: SIP/2.0/UDP 20.1.1.170:5060;branch=z9hG4bK36a362292c0ca
From: <sip:2723 at 20.1.1.170>;tag=730648~4ab333c0-314e-1172-16a8-eca8c1530263-31440129
To: <sip:2723 at 20.1.1.58>
Date: Sun, 06 Sep 2015 09:45:57 GMT
Call-ID: 116abe00-5ec10b55-311d9-aa010114 at 20.1.1.170
Supported: timer,resource-priority,replaces
Min-SE: 1800
User-Agent: Cisco-CUCM10.5
Allow: INVITE, OPTIONS, INFO, BYE, CANCEL, ACK, PRACK, UPDATE, REFER, SUBSCRIBE, NOTIFY
CSeq: 101 INVITE
Expires: 180
Allow-Events: presence
Supported: X-cisco-srtp-fallback,X-cisco-original-called
Cisco-Guid: 0292208128-0000065536-0000002366-2852192532
Session-Expires: 1800
P-Asserted-Identity: <sip:2723 at 20.1.1.170>
Remote-Party-ID: <sip:2723 at 20.1.1.170>;party=calling;screen=yes;privacy=off
Contact: <sip:2723 at 20.1.1.170:5060>;bfcp
Max-Forwards: 69
Content-Type: application/sdp
Content-Length: 198

v=0
o=CiscoSystemsCCM-SIP 730648 1 IN IP4 20.1.1.170
s=SIP Call
c=IN IP4 20.1.1.170
t=0 0
m=audio 25502 RTP/AVP 0 101
a=rtpmap:0 PCMU/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
<------------->
--- (22 headers 9 lines) ---
Sending to 20.1.1.170:5060 (no NAT)
Sending to 20.1.1.170:5060 (no NAT)
Using INVITE request as basis request - 116abe00-5ec10b55-311d9-aa010114 at 20.1.1.170
Found peer '2723' for '2723' from 20.1.1.170:5060

<--- Reliably Transmitting (NAT) to 20.1.1.170:5060 --->
SIP/2.0 401 Unauthorized
Via: SIP/2.0/UDP 20.1.1.170:5060;branch=z9hG4bK36a362292c0ca;received=20.1.1.170;rport=5060
From: <sip:2723 at 20.1.1.170>;tag=730648~4ab333c0-314e-1172-16a8-eca8c1530263-31440129
To: <sip:2723 at 20.1.1.58>;tag=as37a2e028
Call-ID: 116abe00-5ec10b55-311d9-aa010114 at 20.1.1.170
CSeq: 101 INVITE
Server: FPBX-12.0.76(11.19.0)
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE
Supported: replaces, timer
WWW-Authenticate: Digest algorithm=MD5, realm="asterisk", nonce="716cae18"
Content-Length: 0

<------------>
Scheduling destruction of SIP dialog '116abe00-5ec10b55-311d9-aa010114 at 20.1.1.170' in 25472 ms (Method: INVITE)

[Kknaufsappdc*CLI> 
[0K
<--- SIP read from UDP:20.1.1.170:5060 --->
ACK sip:2723 at 20.1.1.58:5060 SIP/2.0
Via: SIP/2.0/UDP 20.1.1.170:5060;branch=z9hG4bK36a362292c0ca
From: <sip:2723 at 20.1.1.170>;tag=730648~4ab333c0-314e-1172-16a8-eca8c1530263-31440129
To: <sip:2723 at 20.1.1.58>;tag=as37a2e028
Date: Sun, 06 Sep 2015 09:45:57 GMT
Call-ID: 116abe00-5ec10b55-311d9-aa010114 at 20.1.1.170
User-Agent: Cisco-CUCM10.5
Max-Forwards: 70
CSeq: 101 ACK
Allow-Events: presence
Content-Length: 0

----------------------------------------------------------------

Thanks a lot !

> SIP/2.0 401 Unauthorized for incoming calls.
> --------------------------------------------
>
>                 Key: ASTERISK-25372
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-25372
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Channels/chan_sip/General
>    Affects Versions: 11.19.0
>         Environment: SHMZ release 6.5 (Final)
> Linux knaufsappdc 2.6.32-431.el6.x86_64 
> Running on a Virtual Environment. VMWare
>            Reporter: Agasthian P
>            Assignee: Agasthian P
>            Severity: Minor
>         Attachments: coretracing.txt, sipconffiles1, siptrace.txt
>
>
> Running Freepbx on top of Asterisk 11.19.0.
> SIP trunk between Cisco Call Manager and FreePbx Asterisk.
> All the incoming calls from the Cisco Call Manager through SIP trunk are getting the error "SIP/2.0 401 Unauthorized". The Cisco Call Manager SIP trunks are treated as peer to peer and do not need any kind of registration.
> Have checked all the settings required to not enable any kind of authentication, still it seems to be asking for authentication.
> Tried the forums first, and have taken care of the following settings :-
> 1. insecure=invite,port
> 2.qualify=yes
> 3. type=friend
> 4. allow sip guests= yes
> 5. Allow Anonymous Inbound SIP Calls=yes
> The sip logs and the sip configuration files are attached as files.
> Call Flow :-
> FreePBX(20.1.1.58) - CUCM(20.1.1.170)
> 2723 extension is in both the systems. And 2723(CUCM) is trying to call 2723(Asterisk).

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