Remote Workers - No Registration

by juanh Sat Jan 05, 2019 1:57 pm

Hi All

I am configuring the Remote worker scenario on a FreePBX system. I followed the scenario but can not get it to work. Usually I will get either a 404 contact no found or a 405 method not allowed. Removing the FreeSBC from the flow allows the remote phone(s) to register successfully.

Below is a small tcpdump of a registration attempt which failed. I took it from the outside view and one from the pbx server itself.

Can any one help?

From Outside:

10:46:49.456038 IP (tos 0x0, ttl 51, id 0, offset 0, flags [DF], proto UDP (17), length 615)
172.58.27.59.48344 > 47.180.28.254.5060: [udp sum ok] SIP, length: 587
REGISTER sip:dh-sip.datahauler.com;transport=UDP SIP/2.0
Via: SIP/2.0/UDP 192.0.0.2:44158;branch=z9hG4bK-524287-1---1684567dc86a8c10;rport
Max-Forwards: 70
Contact: <sip:101@192.0.0.2:44158;rinstance=3f4b9cd3dce5e35e;transport=UDP>
To: <sip:101at domain dot co;transport=UDP>
From: <sip:101at domain dot co;transport=UDP>;tag=a31aca5b
Call-ID: bx7R_eakxTAHVQwajd1Prg..
CSeq: 1 REGISTER
Expires: 60
Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE
User-Agent: Zoiper rv2.9.2
Allow-Events: presence, kpml, talk
Content-Length: 0

10:46:49.515169 IP (tos 0x0, ttl 63, id 19447, offset 0, flags [DF], proto UDP (17), length 396)
47.180.28.254.5060 > 172.58.27.59.48344: [udp sum ok] SIP, length: 368
SIP/2.0 404 Not Found
Via: SIP/2.0/UDP 192.0.0.2:44158;branch=z9hG4bK-524287-1---1684567dc86a8c10;received=172.58.27.59;rport
From: <sip:101at domain dot co>;tag=a31aca5b
To: <sip:101at domain dot co>;tag=z9hG4bK-0f45c239bbb35a092a108f4d63836915
Call-ID: bx7R_eakxTAHVQwajd1Prg..
CSeq: 1 REGISTER
Server: FPBX-14.0.5.23(15.5.0)
Content-Length: 0

On PBX System:

18:46:49.485596 IP (tos 0x0, ttl 64, id 3229, offset 0, flags [DF], proto UDP (17), length 720)
10.100.0.16.sip > 10.100.0.5.sip: [udp sum ok] SIP, length: 692
REGISTER sip:dh-sip.datahauler.com;transport=UDP SIP/2.0
Via: SIP/2.0/UDP 10.100.0.16:5060;branch=z9hG4bK-0f45c239bbb35a092a108f4d63836915
Via: SIP/2.0/UDP 192.0.0.2:44158;branch=z9hG4bK-524287-1---1684567dc86a8c10;received=172.58.27.59;rport
From: <sip:101at domain dot co;transport=UDP>;tag=a31aca5b
To: <sip:101at domain dot co;transport=UDP>
Call-ID: bx7R_eakxTAHVQwajd1Prg..
CSeq: 1 REGISTER
Contact: <sip:101@192.0.0.2:44158;transport=UDP;rinstance=3f4b9cd3dce5e35e>;expires=3600
Max-Forwards: 69
User-Agent: Zoiper rv2.9.2
Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE
Allow-Events: presence, kpml, talk
Content-Length: 0

18:46:49.486244 IP (tos 0x60, ttl 64, id 56609, offset 0, flags [DF], proto UDP (17), length 512)
10.100.0.5.sip > 10.100.0.16.sip: [bad udp cksum 0x16da -> 0xb9d9!] SIP, length: 484
SIP/2.0 404 Not Found
Via: SIP/2.0/UDP 10.100.0.16:5060;rport=5060;received=10.100.0.16;branch=z9hG4bK-0f45c239bbb35a092a108f4d63836915
Via: SIP/2.0/UDP 192.0.0.2:44158;rport;received=172.58.27.59;branch=z9hG4bK-524287-1---1684567dc86a8c10
Call-ID: bx7R_eakxTAHVQwajd1Prg..
From: <sip:101at domain dot co>;tag=a31aca5b
To: <sip:101at domain dot co>;tag=z9hG4bK-0f45c239bbb35a092a108f4d63836915
CSeq: 1 REGISTER
Server: FPBX-14.0.5.23(15.5.0)
Content-Length: 0

Juan

by **Admin** Mon Jan 07, 2019 12:33 am

Would you check the following topics please;

https://forums.freesbc.com/t207-endpoint-sends-the-register-request-to-freesbc-however-the-freesbc-is-not-forwarding-it-to-the-registrar

https://forums.freesbc.com/t208-freesbc-forwards-incoming-registration-messages-to-the-registrar-but-registrar-returns-an-error

by juanh Mon Jan 07, 2019 3:12 pm

Thanks for the reply, but they didn't help.

This may add more light to this. I am adding a few more tcpdumps to see if it helps:

Direct Connection (Working Registration):

19:12:15.711592 IP (tos 0x0, ttl 64, id 5424, offset 0, flags [DF], proto UDP (17), length 621)
10.100.0.113.37728 > 10.100.0.5.sip: [udp sum ok] SIP, length: 593
REGISTER sip:dh dash dot datahauler dot com;transport=UDP SIP/2.0
Via: SIP/2.0/UDP 10.100.0.113:37728;branch=z9hG4bK-524287-1---f7601861fe7380eb;rport
Max-Forwards: 70
Contact: <sip:102at10.100.0.113:37728;rinstance=b6e28966b08d0d30;transport=UDP>
To: <sip:102at dh dash dot datahauler dot com;transport=UDP>
From: <sip:102at dh dash dot datahauler dot com;transport=UDP>;tag=2eaad75c
Call-ID: lItQn1y0cGruzQara9xnzg..
CSeq: 1 REGISTER
Expires: 60
Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE
User-Agent: Zoiper rv2.9.2
Allow-Events: presence, kpml, talk
Content-Length: 0

19:12:15.712277 IP (tos 0x60, ttl 64, id 53882, offset 0, flags [DF], proto UDP (17), length 551)
10.100.0.5.sip > 10.100.0.113.37728: [bad udp cksum 0x1762 -> 0x9b98!] SIP, length: 523
SIP/2.0 401 Unauthorized
Via: SIP/2.0/UDP 10.100.0.113:37728;rport=37728;received=10.100.0.113;branch=z9hG4bK-524287-1---f7601861fe7380eb
Call-ID: lItQn1y0cGruzQara9xnzg..
From: <sip:102at dh dash dot datahauler dot com>;tag=2eaad75c
To: <sip:102at dh dash dot datahauler dot com>;tag=z9hG4bK-524287-1---f7601861fe7380eb
CSeq: 1 REGISTER
WWW-Authenticate: Digest realm="asterisk",nonce="1546888335/715c6aece506bae56488cc5b07c668d2",opaque="0cab00c011d3e6e9",algorithm=md5,qop="auth"
Server: FPBX-14.0.5.25(15.5.0)
Content-Length: 0

19:12:15.721543 IP (tos 0x0, ttl 64, id 5425, offset 0, flags [DF], proto UDP (17), length 921)
10.100.0.113.37728 > 10.100.0.5.sip: [udp sum ok] SIP, length: 893
REGISTER sip:dh dash dot datahauler dot com;transport=UDP SIP/2.0
Via: SIP/2.0/UDP 10.100.0.113:37728;branch=z9hG4bK-524287-1---00c79e8559327463;rport
Max-Forwards: 70
Contact: <sip:102at10.100.0.113:37728;rinstance=b6e28966b08d0d30;transport=UDP>
To: <sip:102at dh dash dot datahauler dot com;transport=UDP>
From: <sip:102at dh dash dot datahauler dot com;transport=UDP>;tag=2eaad75c
Call-ID: lItQn1y0cGruzQara9xnzg..
CSeq: 2 REGISTER
Expires: 60
Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE
User-Agent: Zoiper rv2.9.2
Authorization: Digest username="102",realm="asterisk",nonce="1546888335/715c6aece506bae56488cc5b07c668d2",uri="sip:dh dash dot datahauler dot com;transport=UDP",response="b962f77fe02dcbd48005fbe431795663",cnonce="bc6f743fb1108291b4dd191066a59d65",nc=00000001,qop=auth,algorithm=md5,opaque="0cab00c011d3e6e9"
Allow-Events: presence, kpml, talk
Content-Length: 0

19:12:15.722453 IP (tos 0x60, ttl 64, id 53888, offset 0, flags [DF], proto UDP (17), length 521)
10.100.0.5.sip > 10.100.0.113.37728: [bad udp cksum 0x1744 -> 0xf751!] SIP, length: 493
SIP/2.0 200 OK
Via: SIP/2.0/UDP 10.100.0.113:37728;rport=37728;received=10.100.0.113;branch=z9hG4bK-524287-1---00c79e8559327463
Call-ID: lItQn1y0cGruzQara9xnzg..
From: <sip:102at dh dash dot datahauler dot com>;tag=2eaad75c
To: <sip:102at dh dash dot datahauler dot com>;tag=z9hG4bK-524287-1---00c79e8559327463
CSeq: 2 REGISTER
Date: Mon, 07 Jan 2019 19:12:15 GMT
Contact: <sip:102at10.100.0.113:37728;rinstance=b6e28966b08d0d30>;expires=59
Expires: 60
Server: FPBX-14.0.5.25(15.5.0)
Content-Length: 0

19:12:15.723017 IP (tos 0x60, ttl 64, id 53889, offset 0, flags [DF], proto UDP (17), length 496)
10.100.0.5.sip > 10.100.0.113.37728: [bad udp cksum 0x172b -> 0x57c5!] SIP, length: 468
OPTIONS sip:102at10.100.0.113:37728;rinstance=b6e28966b08d0d30 SIP/2.0
Via: SIP/2.0/UDP 10.100.0.5:5060;rport;branch=z9hG4bKPj83ad7c53-9b9e-4380-ab3e-73ec48728fc8
From: <sip:102at10.100.0.5>;tag=8edbbed2-f5a6-4bda-baca-d2f055f066cb
To: <sip:102at10.100.0.113;rinstance=b6e28966b08d0d30>
Contact: <sip:102at10.100.0.5:5060>
Call-ID: e23d45e3-858c-432f-aafc-42f2ba978372
CSeq: 64754 OPTIONS
Max-Forwards: 70
User-Agent: FPBX-14.0.5.25(15.5.0)
Content-Length: 0

19:12:15.731507 IP (tos 0x0, ttl 64, id 5426, offset 0, flags [DF], proto UDP (17), length 705)
10.100.0.113.37728 > 10.100.0.5.sip: [udp sum ok] SIP, length: 677
SIP/2.0 200 OK
Via: SIP/2.0/UDP 10.100.0.5:5060;rport=5060;branch=z9hG4bKPj83ad7c53-9b9e-4380-ab3e-73ec48728fc8
Contact: <sip:10.100.0.113:37728>
To: <sip:102at10.100.0.113;rinstance=b6e28966b08d0d30>;tag=c117123b
From: <sip:102at10.100.0.5>;tag=8edbbed2-f5a6-4bda-baca-d2f055f066cb
Call-ID: e23d45e3-858c-432f-aafc-42f2ba978372
CSeq: 64754 OPTIONS
Accept: application/sdp, application/sdp
Accept-Language: en
Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE
Supported: replaces, norefersub, extended-refer, timer, outbound, path, X-cisco-serviceuri
User-Agent: Zoiper rv2.9.2
Allow-Events: presence, kpml, talk
Content-Length: 0

Thru FREESBC (Not working)

12:03:35.443930 IP (tos 0x0, ttl 48, id 0, offset 0, flags [DF], proto UDP (17), length 615)
172.58.29.53.41316 > 47.180.28.254.5060: [udp sum ok] SIP, length: 587
REGISTER sip:dh dash dot datahauler dot com;transport=UDP SIP/2.0
Via: SIP/2.0/UDP 192.0.0.2:37728;branch=z9hG4bK-524287-1---e877d74af2975294;rport
Max-Forwards: 70
Contact: <sip:102at192.0.0.2:37728;rinstance=775c78fce1516432;transport=UDP>
To: <sip:102at dh dash dot datahauler dot com;transport=UDP>
From: <sip:102at dh dash dot datahauler dot com;transport=UDP>;tag=b863e45e
Call-ID: mCzYp-Lymb1OSjHTZB0yVg..
CSeq: 1 REGISTER
Expires: 60
Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE
User-Agent: Zoiper rv2.9.2
Allow-Events: presence, kpml, talk
Content-Length: 0

12:03:35.502912 IP (tos 0x0, ttl 63, id 15389, offset 0, flags [DF], proto UDP (17), length 396)
47.180.28.254.5060 > 172.58.29.53.41316: [udp sum ok] SIP, length: 368
SIP/2.0 404 Not Found
Via: SIP/2.0/UDP 192.0.0.2:37728;branch=z9hG4bK-524287-1---e877d74af2975294;received=172.58.29.53;rport
From: <sip:102at dh dash dot datahauler dot com>;tag=b863e45e
To: <sip:102at dh dash dot datahauler dot com>;tag=z9hG4bK-83085dc5b8f1cd67178e08a89cf279a8
Call-ID: mCzYp-Lymb1OSjHTZB0yVg..
CSeq: 1 REGISTER
Server: FPBX-14.0.5.25(15.5.0)
Content-Length: 0

by **Admin** Mon Jan 07, 2019 3:15 pm

Would you send your configuration backup and tbsigtrace capture to support@telcobridges.com please?

by juanh Mon Jan 07, 2019 3:20 pm

Done. Appreciate your help. I can call in also if needed.

Juan

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