Of perhaps some interest if you’re blocking a large amount of IP addresses (or whitelisting client IPs) is ipset.

Allows you to create a set then just have on rule in iptables. Plus has an atomic swap feature so you can build up new sets “offline” then flip them in.

-Michael

From: freeswitch-users-bounces@lists.freeswitch.org [mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of Sergey Safarov
Sent: Friday, November 13, 2015 2:13 AM
To: FreeSWITCH Users Help <freeswitch-users@lists.freeswitch.org>
Subject: Re: [Freeswitch-users] event based sipVicious blocker

Think solution where INVITE mesages DROP/REJECT action will be implemented in mod_fail2ban is be have high pefomance

Iprables is good solution, but cannot help for TLS connection.

He is my iptables status where configure fail2ban. At present time 99% scans is made via UDP transport and 1% for TCP.

Chain f2b-freeswitch-local-tcp (1 references)

pkts bytes target prot opt in out source destination

0 0 REJECT all -- * * 37.8.37.84 0.0.0.0/0 reject-with icmp-port-unreachable

0 0 REJECT all -- * * 195.154.134.220 0.0.0.0/0 reject-with icmp-port-unreachable

0 0 REJECT all -- * * 188.227.169.113 0.0.0.0/0 reject-with icmp-port-unreachable

0 0 REJECT all -- * * 104.214.34.182 0.0.0.0/0 reject-with icmp-port-unreachable

0 0 REJECT all -- * * 85.25.218.94 0.0.0.0/0 reject-with icmp-port-unreachable

0 0 REJECT all -- * * 80.84.58.173 0.0.0.0/0 reject-with icmp-port-unreachable

0 0 REJECT all -- * * 37.8.47.155 0.0.0.0/0 reject-with icmp-port-unreachable

0 0 REJECT all -- * * 23.239.65.132 0.0.0.0/0 reject-with icmp-port-unreachable

0 0 REJECT all -- * * 188.138.33.13 0.0.0.0/0 reject-with icmp-port-unreachable

0 0 REJECT all -- * * 188.138.33.113 0.0.0.0/0 reject-with icmp-port-unreachable

0 0 REJECT all -- * * 80.84.55.178 0.0.0.0/0 reject-with icmp-port-unreachable

0 0 REJECT all -- * * 188.227.170.157 0.0.0.0/0 reject-with icmp-port-unreachable

0 0 REJECT all -- * * 77.245.68.44 0.0.0.0/0 reject-with icmp-port-unreachable

1 52 REJECT all -- * * 88.150.240.111 0.0.0.0/0 reject-with icmp-port-unreachable

0 0 REJECT all -- * * 31.3.230.210 0.0.0.0/0 reject-with icmp-port-unreachable

0 0 REJECT all -- * * 37.8.20.231 0.0.0.0/0 reject-with icmp-port-unreachable

0 0 REJECT all -- * * 213.136.75.235 0.0.0.0/0 reject-with icmp-port-unreachable

0 0 REJECT all -- * * 195.154.177.146 0.0.0.0/0 reject-with icmp-port-unreachable

0 0 REJECT all -- * * 37.8.77.83 0.0.0.0/0 reject-with icmp-port-unreachable

0 0 REJECT all -- * * 88.150.240.169 0.0.0.0/0 reject-with icmp-port-unreachable

0 0 REJECT all -- * * 188.138.33.203 0.0.0.0/0 reject-with icmp-port-unreachable

0 0 REJECT all -- * * 188.138.118.21 0.0.0.0/0 reject-with icmp-port-unreachable

0 0 REJECT all -- * * 104.255.70.242 0.0.0.0/0 reject-with icmp-port-unreachable

0 0 REJECT all -- * * 77.245.65.98 0.0.0.0/0 reject-with icmp-port-unreachable

0 0 REJECT all -- * * 88.150.240.245 0.0.0.0/0 reject-with icmp-port-unreachable

0 0 REJECT all -- * * 217.118.19.157 0.0.0.0/0 reject-with icmp-port-unreachable

0 0 REJECT all -- * * 188.227.170.13 0.0.0.0/0 reject-with icmp-port-unreachable

0 0 REJECT all -- * * 217.172.189.41 0.0.0.0/0 reject-with icmp-port-unreachable

0 0 REJECT all -- * * 85.114.130.146 0.0.0.0/0 reject-with icmp-port-unreachable

0 0 REJECT all -- * * 85.25.207.231 0.0.0.0/0 reject-with icmp-port-unreachable

6 252 RETURN all -- * * 0.0.0.0/0 0.0.0.0/0

Chain f2b-freeswitch-local-udp (1 references)

pkts bytes target prot opt in out source destination

4 3122 REJECT all -- * * 37.8.37.84 0.0.0.0/0 reject-with icmp-port-unreachable

0 0 REJECT all -- * * 195.154.134.220 0.0.0.0/0 reject-with icmp-port-unreachable

10 7949 REJECT all -- * * 188.227.169.113 0.0.0.0/0 reject-with icmp-port-unreachable

201 158K REJECT all -- * * 104.214.34.182 0.0.0.0/0 reject-with icmp-port-unreachable

15 11677 REJECT all -- * * 85.25.218.94 0.0.0.0/0 reject-with icmp-port-unreachable

11 8635 REJECT all -- * * 80.84.58.173 0.0.0.0/0 reject-with icmp-port-unreachable

11 8649 REJECT all -- * * 37.8.47.155 0.0.0.0/0 reject-with icmp-port-unreachable

48 37438 REJECT all -- * * 23.239.65.132 0.0.0.0/0 reject-with icmp-port-unreachable

144 116K REJECT all -- * * 188.138.33.13 0.0.0.0/0 reject-with icmp-port-unreachable

42 33201 REJECT all -- * * 188.138.33.113 0.0.0.0/0 reject-with icmp-port-unreachable

6 4699 REJECT all -- * * 80.84.55.178 0.0.0.0/0 reject-with icmp-port-unreachable

75 61117 REJECT all -- * * 188.227.170.157 0.0.0.0/0 reject-with icmp-port-unreachable

130 104K REJECT all -- * * 77.245.68.44 0.0.0.0/0 reject-with icmp-port-unreachable

133 108K REJECT all -- * * 88.150.240.111 0.0.0.0/0 reject-with icmp-port-unreachable

29897 14M REJECT all -- * * 31.3.230.210 0.0.0.0/0 reject-with icmp-port-unreachable

26 20426 REJECT all -- * * 37.8.20.231 0.0.0.0/0 reject-with icmp-port-unreachable

312 247K REJECT all -- * * 213.136.75.235 0.0.0.0/0 reject-with icmp-port-unreachable

1133 612K REJECT all -- * * 195.154.177.146 0.0.0.0/0 reject-with icmp-port-unreachable

2 1570 REJECT all -- * * 37.8.77.83 0.0.0.0/0 reject-with icmp-port-unreachable

85917 40M REJECT all -- * * 88.150.240.169 0.0.0.0/0 reject-with icmp-port-unreachable

73 57484 REJECT all -- * * 188.138.33.203 0.0.0.0/0 reject-with icmp-port-unreachable

64 50450 REJECT all -- * * 188.138.118.21 0.0.0.0/0 reject-with icmp-port-unreachable

46 36467 REJECT all -- * * 104.255.70.242 0.0.0.0/0 reject-with icmp-port-unreachable

3077 2388K REJECT all -- * * 77.245.65.98 0.0.0.0/0 reject-with icmp-port-unreachable

21 16564 REJECT all -- * * 88.150.240.245 0.0.0.0/0 reject-with icmp-port-unreachable

104 81759 REJECT all -- * * 217.118.19.157 0.0.0.0/0 reject-with icmp-port-unreachable

95 75254 REJECT all -- * * 188.227.170.13 0.0.0.0/0 reject-with icmp-port-unreachable

62 48840 REJECT all -- * * 217.172.189.41 0.0.0.0/0 reject-with icmp-port-unreachable

2483 1974K REJECT all -- * * 85.114.130.146 0.0.0.0/0 reject-with icmp-port-unreachable

51 39876 REJECT all -- * * 85.25.207.231 0.0.0.0/0 reject-with icmp-port-unreachable

2351K 1204M RETURN all -- * * 0.0.0.0/0 0.0.0.0/0

Sergey.

On Fri, Nov 13, 2015 at 9:38 AM, jay binks <jaybinks@gmail.com> wrote:

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@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@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@lists.freeswitch.org [mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of Russell Treleaven
Sent: Wednesday, November 11, 2015 10:29 AM
To: FreeSWITCH Users Help <freeswitch-users@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@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
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UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
http://www.freeswitch.org

_________________________________________________________________________
Professional FreeSWITCH Consulting Services:
consulting@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@lists.freeswitch.org
http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
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--

Sincerely

Jay

_________________________________________________________________________
Professional FreeSWITCH Consulting Services:
consulting@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@lists.freeswitch.org
http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
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