It looks like 50.47.85.167 auth'ed as user 1000. Seemingly, the internal profile is exposed to the internet.

1) If you are purely running internal calls, then explicitly set the local IP in the sofia profile so that it doesn't listen externally.
2) Did they auth as user 1000? Do you have that user set up?
3) Firewalls are best set up opposite, as blocking ALL inbound traffic then explicitly punching hole to allow some. Are you allowing anything to do with port 5060, 5061, etc or however you set up your sofia internal profile?

We need more info to tell you anything more...

-Avi


On Wed, Sep 26, 2012 at 8:28 PM, Todd Bailey <toddb@toddbailey.net> wrote:

Hey All,


I just got an email from Frontier that there were several attempts to
make international calls.


I checked the log file and verified that somehow someone was able to get
access to FS from the internet.


here is a sample of the log

 [m [36m2012-09-23 16:30:29.916821 [NOTICE] switch_channel.c:941 New
Channel sofia/internal/1000@50.47.85.167
[af778857-0188-4ed2-a82a-94ae749a02cb]
 [m [32m2012-09-23 16:30:29.916821 [INFO] mod_dialplan_xml.c:485
Processing 1000 <1000>->01137168521352 in context default
 [m [36m2012-09-23 16:30:29.936831 [NOTICE] switch_channel.c:941 New
Channel sofia/internal/01137168521352@192.168.1.5:5061
[d1243a78-c464-45fa-9215-e7b85e1221fc]
 [m [36m2012-09-23 16:30:29.956842 [NOTICE] sofia.c:6132 Ring-Ready
sofia/internal/01137168521352@192.168.1.5:5061!
 [m [36m2012-09-23 16:30:29.956842 [NOTICE] mod_sofia.c:2572 Ring-Ready
sofia/internal/1000@50.47.85.167!
 [m [36m2012-09-23 16:30:29.956842 [NOTICE] switch_ivr_originate.c:519
Ring Ready sofia/internal/1000@50.47.85.167!
 [m [36m2012-09-23 16:30:32.936826 [NOTICE] sofia.c:6777 Channel
[sofia/internal/01137168521352@192.168.1.5:5061] has been answered
 [m [36m2012-09-23 16:30:32.956825 [NOTICE] sofia_glue.c:4176 Pre-Answer
sofia/internal/1000@50.47.85.167!
 [m [36m2012-09-23 16:30:32.956825 [NOTICE] switch_ivr_originate.c:3303
Channel [sofia/internal/1000@50.47.85.167] has been answered
 [m [36m2012-09-23 16:30:52.356865 [N [m [36m2012-09-23 16:30:29.916821
[NOTICE] switch_channel.c:941 New Channel
sofia/internal/1000@50.47.85.167 [af778857-0188-4ed2-a82a-94ae749a02cb]
 [m [32m2012-09-23 16:30:29.916821 [INFO] mod_dialplan_xml.c:485
Processing 1000 <1000>->01137168521352 in context default
 [m [36m2012-09-23 16:30:29.936831 [NOTICE] switch_channel.c:941 New
Channel sofia/internal/01137168521352@192.168.1.5:5061
[d1243a78-c464-45fa-9215-e7b85e1221fc]
 [m [36m2012-09-23 16:30:29.956842 [NOTICE] sofia.c:6132 Ring-Ready
sofia/internal/01137168521352@192.168.1.5:5061!
 [m [36m2012-09-23 16:30:29.956842 [NOTICE] mod_sofia.c:2572 Ring-Ready
sofia/internal/1000@50.47.85.167!
 [m [36m2012-09-23 16:30:29.956842 [NOTICE] switch_ivr_originate.c:519
Ring Ready sofia/internal/1000@50.47.85.167!
 [m [36m2012-09-23 16:30:32.936826 [NOTICE] sofia.c:6777 Channel
[sofia/internal/01137168521352@192.168.1.5:5061] has been answered
 [m [36m2012-09-23 16:30:32.956825 [NOTICE] sofia_glue.c:4176 Pre-Answer
sofia/internal/1000@50.47.85.167!
 [m [36m2012-09-23 16:30:32.956825 [NOTICE] switch_ivr_originate.c:3303
Channel [sofia/internal/1000@50.47.85.167] has been answered
 [m [36m2012-09-23 16:30:52.356865 [NOTICE] switch_channel.c:941 New
Channel sofia/internal/1000@50.47.85.167
[4576bc76-144a-4f6f-8915-871b511c374d]
 [m [32m2012-09-23 16:30:52.376830 [INFO] mod_dialplan_xml.c:485
Processing 1000 <1000>->01137168905352 in context defaultOTICE]
switch_channel.c:941 New Channel sofia/internal/1000@50.47.85.167
[4576bc76-144a-4f6f-8915-871b511c374d]
 [m [32m2012-09-23 16:30:52.376830 [INFO] mod_dialplan_xml.c:485
Processing 1000 <1000>->01137168905352 in context default


At this point I'm at a loss how this is happening as I have multiple
firewalls in place that limit port access.

Can someone provide a few pointers on how to better secure FS running on
Linux systems?


thanks


--
-
-
-    Best Regards,
-
-            Todd Bailey
-
-


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