25 Jan
2018
25 Jan
'18
5:01 p.m.
Hello,
Mojtaba wrote on 24.01.2018 12:17:
Hello,
I have a problem today, It's strange for me.
Suppose we have this senario:
uac1------->SEMS(mo profile)------->Kamailio-------->SEMS(mt
profile)---------->uac2
In above topology, we have two interfaces(intern,extern) for SEMS, and
just used as SBC (sbc application).
if i used port=5060 as external port, every things is right and log
file is like this:
[#7fed3f9f9700/32820] [run, udp_trsp.cpp:352] DEBUG: vv M [|] u recvd
msg via UDP from 89.165.117.125:42411 vv
--++--
REGISTER sip:kava.shatel.ir;transport=UDP SIP/2.0
Via: SIP/2.0/UDP
89.165.117.125:42411;branch=z9hG4bK-d8754z-021bd8b61efc7ac0-1---d8754z-
Max-Forwards: 70
Contact: <sip:4000@
89.165.117.125:42411;rinstance=79011092e56e1a09;transport=UDP>
To: <sip:4000@kava.shatel.ir;transport=UDP>
From: <sip:4000@kava.shatel.ir;transport=UDP>;tag=82820e1f
Call-ID: Y2U4YThiYjEwNTUzMzliZTIwNWZkMDI3MTM4OTZlNWU.
CSeq: 2 REGISTER
Expires: 3600
Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS,
INFO, SUBSCRIBE
Supported: replaces, norefersub, extended-refer, timer, X-cisco-serviceuri
User-Agent: Z 3.3.25608 r25552
Allow-Events: presence, kpml
Content-Length: 0
but when i changed port=4080 for external port, The Via header and
contact header are changed to my public ip, like this:
[#7fed3f9f9700/32820] [run, udp_trsp.cpp:352] DEBUG: vv M [|] u recvd
msg via UDP from 89.165.117.125:42411 vv
--++--
REGISTER sip:kava.shatel.ir;transport=UDP SIP/2.0
Via: SIP/2.0/UDP
172.1.1.125:42411;branch=z9hG4bK-d8754z-021bd8b61efc7ac0-1---d8754z-
Max-Forwards: 70
Contact: <sip:4000@172.1.1.125:42411;rinstance=79011092e56e1a09;transport=UDP>
To: <sip:4000@kava.shatel.ir;transport=UDP>
From: <sip:4000@kava.shatel.ir;transport=UDP>;tag=82820e1f
Call-ID: Y2U4YThiYjEwNTUzMzliZTIwNWZkMDI3MTM4OTZlNWU.
CSeq: 2 REGISTER
Expires: 3600
Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS,
INFO, SUBSCRIBE
Supported: replaces, norefersub, extended-refer, timer, X-cisco-serviceuri
User-Agent: Z 3.3.25608 r25552
Allow-Events: presence, kpml
Content-Length: 0
Why my public ip address is there here? I just changed external
port=4080 in sems server. In SDP protocol i have the same problem when
i changed external ip port in sems server.
is this message log the one of the first SEMS (mo profile) which is
sent by uac1? In that case it's the uac1 which puts the 172.1.1.125 IP
addresses in the SIP message. Or rather: I can imagine that there's a
SIP ALG on the NAT between the uac1 and SEMS, which only changes
packets when the destination port is 5060.
Stefan
Thanks.
--Mojtaba Esfandiari.S
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