[Freeswitch-users] Getting fail2ban working properly

[Don Hawkins]

No problem, I need to take notes anyway. Here they are...


*A.*  /etc/fail2ban/filter.d/freeswitch.conf needs the following text:

https://github.com/fail2ban/fail2ban/blob/master/config/filter.d/freeswitch.conf

NOTE: Internal and Public sofia profiles need:  <param
name="log-auth-failures" value="true"/>


*B.*  /etc/fail2ban/jail.conf and in /etc/fail2ban/jail.local (not sure
which one is working, I had to create jail.local)

[freeswitch]
enabled  = true
port     = 5060,5061,5080,5081,5076 5074 5071
filter   = freeswitch
logpath  = /var/log/freeswitch/freeswitch.log
maxretry = 3


*C.* Drop these rules into iptables to block the scanners on ports 5060 and
5080

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


*D.* Change SSH port from 22 to a custom number

vi /etc/ssh/sshd_config


*E.* Update SSH jail in /etc/fail2ban/jail.conf to custom port number.

[ssh]

enabled  = true
port     = 9898,22
filter   = sshd
logpath  = /var/log/auth.log
maxretry = 6


*F.* I also have additional security using CDR records (curl).  If a call
comes in that does not have an 'account number' set (a custom variable we
set for all incoming and outgoing calls from our customers) then we execute
a shell command to block that IP without delay because they obviously
aren't one of our customers. We are using mod_httapi and all calls start
that way for us, so it's easy to set the variable as all calls start with
<continue>.


iptables -A INPUT -s 65.55.44.100 -j DROP


Where 65.55.44.100 is the ip to block.



Don




On Sat, Sep 10, 2016 at 7:58 PM, George Assaad <gassaad at emassembly.com>
wrote:

> Hi Don,
> Could you please share your final settings since it works.
>
> Thanks,
>
> George
>
> On Sep 10, 2016, at 5:49 PM, Don Hawkins <hawkins at hawkinsegroup.com>
> wrote:
>
> Just want to update everyone that the registration attempts have almost
> stopped 100% since blocking the sniffers and setting a 4 hour block time
> after three failed registrations.
>
> Good day!
>
> On Thu, Sep 8, 2016 at 4:21 PM, jungle Boogie <jungleboogie0 at gmail.com>
> wrote:
>
>> On 8 September 2016 at 12:54, Don Hawkins <hawkins at hawkinsegroup.com>
>> wrote:
>> > Can someone share with me how to block all ports except the important
>> ones?
>>
>> I had the same question about a month ago:
>> http://lists.freeswitch.org/pipermail/freeswitch-users/2016-
>> August/121694.html
>>
>> Colin gives good advice here:
>> http://lists.freeswitch.org/pipermail/freeswitch-users/2016-
>> August/121730.html
>>
>> I've also had success with contacting the originating network and
>> request their customer to stop the traffic to me.
>>
>> Here's the abuse form for online.net:
>> https://console.online.net/en/account/abuses/search
>>
>> By the way, if the fail2ban page on confluence needs updating, please
>> update it or list what's wrong with it. I do see it indicates to
>> create the jail.local and that's what you were missing for yours to
>> work properly.
>>
>>
>> --
>> -------
>> inum: 883510009027723
>> sip: jungleboogie at sip2sip.info
>>
>> _________________________________________________________________________
>> 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,
> Don Hawkins
> CEO
> Hawkins Enterprise Group LLC
> http://hawkinsegroup.com
> Zello PTT <http://zello.com/>: push2don
> P: 469-214-5044
> _________________________________________________________________________
> 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
>
>
>
> _________________________________________________________________________
> 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,
Don Hawkins
CEO
Hawkins Enterprise Group LLC
http://hawkinsegroup.com
Zello PTT <http://zello.com>: push2don
P: 469-214-5044
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