[Serusers] REGISTER loops from specific location

[Mark Jeftovic]

Hi folks, I was experimenting with SER awhile back and am now revisiting it.

I've just setup a SER installation using the latest debian packages on a 
server outside of our office firewall on a public IP address.

 From home, my laptop on a private IP behind a linksys router/firewall 
can login/register with my SER server fine. It can also login/register 
into my iptel.org account as well.

Then when I get to the office, behind our firewall, I have problems.
I can still login/register my iptel.org account from my laptop on a 
private IP behind the office firewall, but when I try to log into the 
SER server I setup it seems to go into a loop (see logs below).

I'm using stunserver.org in all cases.

I wonder about the line pre_auth(): Credentials with given realm not 
found but then it works fine using the same login info from home.

Also, when all this gives up my softphone says:

Registration rejected.
Response:Server could not be reached, or it did not respond.

Any ideas appreciated.

Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: SIP Request:
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]:  method:  <REGISTER>
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]:  uri:     <sip:sip.example.org>
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]:  version: <SIP/2.0>
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: parse_headers: flags=1
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: end of header reached, state=5
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: parse_headers: Via found, flags=1
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: parse_headers: this is the 
first vi
a
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: After parse_msg...
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: preparing to run routing 
scripts...

Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: DEBUG : is_maxfwd_present: 
searchin
g for max_forwards header
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: parse_headers: flags=128
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: end of header reached, state=8
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: DEBUG: get_hdr_field: <To> 
[28]; ur
i=[sip:markjr at sip.example.org]
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: DEBUG: to body 
[sip:markjr at sip.easy
dns.org^M ]
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: get_hdr_field: cseq <CSeq>: 
<142240
54> <REGISTER>
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: DEBUG: get_hdr_body : 
content_lengt
h=0
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: found end of header
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: DEBUG: is_maxfwd_present: 
max_forwa
rds header not found!
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: end of header reached, state=8
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: DEBUG: get_hdr_field: <To> 
[28]; ur
i=[sip:markjr at sip.example.org]
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: DEBUG: to body 
[sip:markjr at sip.easy
dns.org^M ]
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: get_hdr_field: cseq <CSeq>: 
<142240
54> <REGISTER>
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: DEBUG: get_hdr_body : 
content_lengt
h=0
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: found end of header
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: DEBUG: is_maxfwd_present: 
max_forwa
rds header not found!
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: end of header reached, state=8
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: parse_headers: flags=256
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: find_first_route(): No Route 
header
s found
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: loose_route(): There is no 
Route HF

Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: check_self - checking if 
host==us:
15==9 &&  [sip.example.org] == [127.0.0.1]
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: check_self - checking if port 
5060
matches port 5060
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: check_self - checking if 
host==us:
15==13 &&  [sip.example.org] == [66.207.199.42]
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: check_self - checking if port 
5060
matches port 5060
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: DBUG: entering REGISTER branch
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: parse_headers: flags=4096
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: pre_auth(): Credentials with 
given realm not found
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: build_auth_hf(): 
'WWW-Authenticate:
  Digest realm="sip.example.org", 
nonce="42cacdeb905244dcc9e7ebc71f60fb5aaa658faf"^M '
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: parse_headers: flags=-1
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: 
check_via_address(66.207.199.34, 19
2.168.1.18, 0)
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: DEBUG:destroy_avp_list: 
destroing l
ist (nil)
Jul  5 14:09:03 tmda /usr/sbin/ser[21028]: receive_msg: cleaning up