Marvin you can use solution published at https://freeswitch.org/jira/browse/FS-7125
Currently I successfully block that calls
On Thu, Mar 12, 2015 at 7:28 PM, Peter Steinbach <lists@telefaks.de> wrote:
Hello,
we receive a number of Invites from certain IPs, who want to break into our system and call external premium rate numbers
Unwanted registers we can block already, but we still have the issue to block specific invites from fraudulent IPs inside the iptables firewall.
In the Freeswitch log we see:
2015-03-12 16:54:38.381552 [NOTICE] switch_channel.c:1055 New Channel sofia/internal/149@10.11.12.13 [167bb9ee-c8d0-11e4-9f31-b39e581405c5]
2015-03-12 16:54:38.381552 [DEBUG] switch_core_session.c:1061 Send signal sofia/internal/149@10.11.12.13 [BREAK]
2015-03-12 16:54:38.381552 [DEBUG] switch_core_session.c:1061 Send signal sofia/internal/149@10.11.12.13 [BREAK]
2015-03-12 16:54:38.381552 [DEBUG] switch_core_state_machine.c:472 (sofia/internal/149@10.11.12.13) Running State Change CS_NEW
2015-03-12 16:54:38.381552 [DEBUG] sofia.c:8841 sofia/internal/149@10.11.12.13 receiving invite from 155.94.64.26:5076 version: 1.5.15b git 82f267a 2015-02-16 22:59:55Z 64bit
2015-03-12 16:54:38.381552 [DEBUG] sofia.c:9008 IP 15.194.164.26 Rejected by acl "domains". Falling back to Digest auth.
2015-03-12 16:54:38.441582 [DEBUG] switch_core_state_machine.c:491 (sofia/internal/149@10.11.12.13) State NEW
2015-03-12 16:54:38.441582 [DEBUG] switch_core_session.c:1061 Send signal sofia/internal/149@10.11.12.13 [BREAK]
2015-03-12 16:54:38.441582 [DEBUG] sofia.c:2067 detaching session 167bb9ee-c8d0-11e4-9f31-b39e581405c5
2015-03-12 16:54:48.461568 [WARNING] switch_core_state_machine.c:572 167bb9ee-c8d0-11e4-9f31-b39e581405c5 sofia/internal/149@10.11.12.13 Abandoned
The fraudulent IP here is 15.194.164.26 (anonymized of course). The IP 10.11.12.13 is the (anonymized) IP of our server.
The point here is: 15.194.164.26 is sending an INVITE, Freeswitch then sends "authentication required". Freeswitch then logs this entry with "Abandoned" (see last line above) and that's it.
So Is there any way to make Freeswitch show up a log line with the fraudulent IP 15.194.164.26 and some text like "abandonned"?
Example for extending a current log line
2015-03-12 16:54:48.461568 [WARNING] switch_core_state_machine.c:572 167bb9ee-c8d0-11e4-9f31-b39e581405c5 sofia/internal/149@10.11.12.13 Abandoned for IP 15.194.164.26
This would enable us to process this entry with fail2ban and block this IP in the Firewall.
Any other hint is welcome.
-- With kind regards Marvin Keil Telefaks Services GmbH mailto:lists (att) telefaks.de Internet: www.telefaks.de
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-- With kind regards Peter Steinbach Telefaks Services GmbH mailto:lists (att) telefaks.de Internet: www.telefaks.de