[Freeswitch-users] event based sipVicious blocker

[jay binks]

Doing it like you want is fine for education, however its not the best way,
because it wont scale efficiently.
mod_sofia takes significant resources to consume a SIP Invite and generate
events.

iptables will stop Freeswitch having to process these INVITES, thus saving
CPU.
BUT you may not really care, if this is just for a home PBX.

Jay

On 13 November 2015 at 14:18, Russell Treleaven <rtreleaven at bunnykick.ca>
wrote:

> figured out how to use events without a socket and thought I would share.
>
> my $con = new freeswitch::EventConsumer("CHANNEL_CREATE");
> $con->bind(
> "CUSTOM",
> "sofia::pre_register"
> );
> while(my $e = $con->pop(1)) {
> freeswitch::consoleLog(
> "INFO",
> $e->serialize . "\n"
> );
> }
>
> On Wed, Nov 11, 2015 at 11:33 AM, Ken Rice <krice at freeswitch.org> wrote:
>
>> Why not just block it with iptables?
>>
>>
>>
>>
>>
>> iptables -I INPUT -j DROP -p udp --dport 5060 -m string --string
>> "VaxSIPUserAgent" --algo bm
>>
>> iptables -I INPUT -j DROP -p udp --dport 5060 -m string --string
>> "friendly-scanner" --algo bm
>>
>> iptables -I INPUT -j DROP -p udp --dport 5060 -m string --string "sipcli"
>> --algo bm
>>
>> iptables -I INPUT -j DROP -p udp --dport 5080 -m string --string
>> "VaxSIPUserAgent" --algo bm
>>
>> iptables -I INPUT -j DROP -p udp --dport 5080 -m string --string
>> "friendly-scanner" --algo bm
>>
>> iptables -I INPUT -j DROP -p udp --dport 5080 -m string --string "sipcli"
>> --algo bm
>>
>>
>>
>>
>>
>> these will get 99% of it because the script kiddies doing the scanning
>> aren’t really that bright… there may be some additional strings to want to
>> block, but these work great when combined with fail2bans log parser
>>
>>
>>
>> *From:* freeswitch-users-bounces at lists.freeswitch.org [mailto:
>> freeswitch-users-bounces at lists.freeswitch.org] *On Behalf Of *Russell
>> Treleaven
>> *Sent:* Wednesday, November 11, 2015 10:29 AM
>> *To:* FreeSWITCH Users Help <freeswitch-users at lists.freeswitch.org>
>> *Subject:* [Freeswitch-users] event based sipVicious blocker
>>
>>
>>
>> I am working on a freeswitch sipVicious blocker.
>>
>> I would like to run it from within freeswitch.
>>
>> Is there a way to get events while running within freeswitch without
>> running a socket via ESL::ESLconnection?
>>
>>
>>
>> #!/usr/bin/perl
>>
>> use strict;
>>
>> use warnings;
>>
>> use ESL;
>>
>> my $c = new ESL::ESLconnection(
>>
>>             "localhost",
>>
>>             "8021",
>>
>>             "ClueCon"
>>
>> );
>>
>> $c->events(
>>
>>             "plain",
>>
>>             "CHANNEL_CREATE CUSTOM sofia::pre_register"
>>
>> );
>>
>> while ($c->connected()) {
>>
>>             my $event = $c->recvEvent();
>>
>> #do some stuff
>>
>> }
>>
>> _________________________________________________________________________
>> Professional FreeSWITCH Consulting Services:
>> consulting at freeswitch.org
>> http://www.freeswitchsolutions.com
>>
>> Official FreeSWITCH Sites
>> http://www.freeswitch.org
>> http://confluence.freeswitch.org
>> http://www.cluecon.com
>>
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>>
>
>
> _________________________________________________________________________
> Professional FreeSWITCH Consulting Services:
> consulting at freeswitch.org
> http://www.freeswitchsolutions.com
>
> Official FreeSWITCH Sites
> http://www.freeswitch.org
> http://confluence.freeswitch.org
> http://www.cluecon.com
>
> FreeSWITCH-users mailing list
> FreeSWITCH-users at lists.freeswitch.org
> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
> http://www.freeswitch.org
>



-- 
Sincerely

Jay
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