It seems this problem is related to the client that I am using: Zoiper has problems,  Sipdroid/3.1 beta/Nexus 7. has no problems, when connecting locally to a kamailio server. So first issue solved.

Now I am sticking to Sipdroid for the rest of the setup. I am trying to connect now to a remote kamailio, with exactly the same config. I get the following reply from the server (SIP/2.0 403 Not relaying). What I am trying to do is just a very simple setup with client2 -> router(nat) -> internet -> kamailio server -> internet -> router(nat) -> client2

How can I configure kamailio to allow for remote clients to connect to it? Do I need to define "domains"? Any documentation pointers?

Thanks!


U 2013/07/02 17:39:52.468165 my.client.ip.159:36892 -> my.server.ip.188:44444
REGISTER sip:tethys.my-domain.net SIP/2.0.
Via: SIP/2.0/UDP 192.168.0.101:36892;rport;branch=z9hG4bK81121.
Max-Forwards: 70.
To: <sip:test@tethys.my-domain.net>.
From: <sip:test@tethys.my-domain.net>;tag=z9hG4bK40649044.
Call-ID: 390203117492@192.168.0.101.
CSeq: 2 REGISTER.
Contact: <sip:test@192.168.0.101:36892;transport=udp>.
Expires: 3600.
User-Agent: Sipdroid/3.1 beta/Nexus 7.
Authorization: Digest username="test", realm="tethys.my-domain.net", nonce="UdL1dFHS9Eh3HYQiafUvPOJg2UBCe+Xt", uri="sip:tethys.my-domain.net", response="eb956f2b03333aadc24929ecea2eac4a".
Content-Length: 0.
.


U 2013/07/02 17:39:52.468930 my.server.ip.188:44444 -> my.client.ip.159:36892
SIP/2.0 403 Not relaying.
Via: SIP/2.0/UDP 192.168.0.101:36892;rport=36892;branch=z9hG4bK81121;received=my.client.ip.159.
To: <sip:test@tethys.my-domain.net>;tag=759a1ae88f11754261e7a1046469695e.98cf.
From: <sip:test@tethys.my-domain.net>;tag=z9hG4bK40649044.
Call-ID: 390203117492@192.168.0.101.
CSeq: 2 REGISTER.
Server: kamailio (4.0.2 (x86_64/linux)).
Content-Length: 0.


On Tue, Jul 2, 2013 at 2:39 PM, Daniel Gonzalez <gonvaled@gonvaled.com> wrote:
Thanks, that brings me a bit further. The server is replying with 401, but my client decides it's a 408.
Anyway, I do not know why the server would reply with "SIP/2.0 401 Unauthorized.". The credentials are properly configured in both ends ...
Any idea what could I do to debug the authentication process in kamailio?

U 2013/07/02 14:33:47.784178 my.client.ip.159:2048 -> my.server.ip.188:44444
REGISTER sip:tethys.my-domain.net;transport=UDP SIP/2.0.
Via: SIP/2.0/UDP 192.168.0.101:5060;branch=z9hG4bK-d8754z-bdff5558e08beea4-1---d8754z-.
Max-Forwards: 70.
Contact: <sip:test@192.168.0.101:5060;rinstance=9e9412062d4d8402;transport=UDP>.
To: <sip:test@tethys.my-domain.net;transport=UDP>.
From: <sip:test@tethys.my-domain.net;transport=UDP>;tag=8d2abf0c.
Call-ID: OTIxMjFmNGU2MzM1ZjU5NmZjN2FlZTBmZjg0ZThkZDA..
CSeq: 6 REGISTER.
Expires: 60.
Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO, SUBSCRIBE.
Supported: replaces, norefersub, extended-refer, timer, X-cisco-serviceuri.
User-Agent: Zoiper r18729.
Allow-Events: presence, kpml.
Content-Length: 0.
.


U 2013/07/02 14:33:47.784497 my.server.ip.188:44444 -> my.client.ip.159:5060
SIP/2.0 401 Unauthorized.
Via: SIP/2.0/UDP 192.168.0.101:5060;branch=z9hG4bK-d8754z-bdff5558e08beea4-1---d8754z-;received=my.client.ip.159.
To: <sip:test@tethys.my-domain.net;transport=UDP>;tag=759a1ae88f11754261e7a1046469695e.58c7.
From: <sip:test@tethys.my-domain.net;transport=UDP>;tag=8d2abf0c.
Call-ID: OTIxMjFmNGU2MzM1ZjU5NmZjN2FlZTBmZjg0ZThkZDA..
CSeq: 6 REGISTER.
WWW-Authenticate: Digest realm="tethys.my-domain.net", nonce="UdLJ11HSyKs65LVgxXdXpE8HRYVp5V7l".
Server: kamailio (4.0.2 (x86_64/linux)).
Content-Length: 0.



On Tue, Jul 2, 2013 at 9:47 AM, Daniel-Constantin Mierla <miconda@gmail.com> wrote:
Hello,


On 7/1/13 8:48 PM, Daniel Gonzalez wrote:
Hi,

I am trying to setup a test user. I have installed from repo. This is my monitor output:

[cycle #: 2; if constant make sure server lives]
Server:: kamailio (4.0.2 (x86_64/linux))
Build:: mi_core.c compiled on 15:41:19 Jul  1 2013 with gcc 4.6.3
Flags:: STATS: Off, USE_IPV6, USE_TCP, USE_TLS, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, SHM_MMAP, PKG_MALLOC, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLACKLIST, HAVE_RESOLV_RES
GIT:: fc967b
Now:: Mon Jul  1 20:43:35 2013
Up since:: Mon Jul  1 20:43:04 2013
Up time:: 31 [sec]

Transaction Statistics: 
tmx:UAS_transactions = 0
tmx:UAC_transactions = 0
tmx:inuse_transactions = 0

Stateless Server Statistics: 
sl:sent_replies = 1
sl:sent_err_replies = 0
sl:received_ACKs = 0

UsrLoc Stats: 
usrloc:location-contacts = 0
usrloc:location-expires = 0
usrloc:location-users = 0
usrloc:registered_users = 0

I am running kamailio as:

sudo /usr/local/kamailio-devel/sbin/kamailio -l <my-public-ip-addr> -E -ddd -D 1

And this is my subscriber:

» kamctl db show subscriber
+----+----------+--------------------+------------+---------------+----------------------------------+----------------------------------+------+
| id | username | domain             | password   | email_address | ha1                              | ha1b                             | rpid |
+----+----------+--------------------+------------+---------------+----------------------------------+----------------------------------+------+
|  6 | test     | tethys.xxxxxxx.net | testpasswd |               | 5cf40781f33c6f43a26244046564b67e | eb898de815bc16092e4c2e8c04bfe188 | NULL |
+----+----------+--------------------+------------+---------------+----------------------------------+----------------------------------+------+

My sip client is replying all the time with "Request Timeout (408)", and my server is saying:

0(15818) DEBUG: auth [api.c:86]: pre_auth(): auth:pre_auth: Credentials with realm '<my-ip>' not found

What could be going on?
the log message is for debug, could be no issue related to it.

You should watch the sip traffic on the server and see what happens, you can use:

ngrep -d any -qt -W byline port 5060

Cheers,
Daniel
-- 
Daniel-Constantin Mierla - http://www.asipto.com
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda

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