[Freeswitch-users] Fail to ban rule for detecting INVITES with no challenge

Sergey Safarov s.safarov at gmail.com
Thu Mar 12 23:02:38 MSK 2015


Ken pull request has been created
https://freeswitch.org/stash/projects/FS/repos/freeswitch/pull-requests/159/overview
Mike rightly said that it is necessary to use a variable network_addr in
caller profile


On Thu, Mar 12, 2015 at 11:46 PM, Ken Rice <krice at freeswitch.org> wrote:

>  Is there a pull request on that?
>
>
> On 3/12/15, 1:27 PM, "Ítalo Rossi" <italorossib at gmail.com> wrote:
>
> I set the JIRA status as Needs Review, hope it get merged soon.
>
> On Thu, Mar 12, 2015 at 4:03 PM, Sergey Safarov <s.safarov at gmail.com>
> wrote:
>
> Ítalo I am not rewrite patch set use network_addr in caller profile and
> path not merget to master.
>
> Sergey
>
> On Thu, Mar 12, 2015 at 7:51 PM, Ítalo Rossi <italorossib at gmail.com>
> wrote:
>
>
> Version?
>
> I'm almost sure this is already implemented in master.
>
> Em 12/03/2015 13:43, "Kyle King" <kyle.king at quentustech.com> escreveu:
>
> Have you tried mod_fail2ban?
>
> On March 12, 2015 12:28:16 PM EDT, Peter Steinbach <lists at 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 at 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 at 10.11.12.13 [BREAK]
>  2015-03-12 16:54:38.381552 [DEBUG] switch_core_session.c:1061 Send signal
> sofia/internal/149 at 10.11.12.13 [BREAK]
>  2015-03-12 16:54:38.381552 [DEBUG] switch_core_state_machine.c:472 (
> sofia/internal/149 at 10.11.12.13) Running State Change CS_NEW
>  2015-03-12 16:54:38.381552 [DEBUG] sofia.c:8841
> sofia/internal/149 at 10.11.12.13 receiving invite from 155.94.64.26:5076 <
> http://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 at 10.11.12.13) State NEW
>  2015-03-12 16:54:38.441582 [DEBUG] switch_core_session.c:1061 Send signal
> sofia/internal/149 at 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 at 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 at 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.
>
>
>
> --
> Ken
>
>
>
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