[Freeswitch-users] Blocking incoming calls

Brian Foster bdfoster at endigotech.com
Wed Mar 13 20:14:55 MSK 2013 

I don't think the OP has even replied to the thread lol

Sent from my iPhone

On Mar 13, 2013, at 8:28 AM, Avi Marcus <avi at avimarcus.net> wrote:

> Why do we have such a long thread on this???
> 
> If you KNOW what IPs are contacting you, then firewall it.
> 
> If not or you don't want to do that, don't be surprised if calls hit FS. But if you route properly, then it's to a different context or whatever so there's NO harm done.
> If you don't even want CDRs on that then disable the CDR when calls come in:
> <action application="set" data="process_cdr=false"/>
> 
> I don't think there's anything else to add...
> 
> -Avi
> 
> 
> On Wed, Mar 13, 2013 at 2:07 PM, Andrew Cassidy <andrew at cassidywebservices.co.uk> wrote:
>> They could still be registering, but to a different profile. Possibly on an internal network.
>> 
>> 
>> On 13 March 2013 11:43, Alex Lake <alex at digitalmail.com> wrote:
>>> Ah, so presumably the OP doesn't have (for example) SIP handsets registered to his box (presumably       that's done on port 5060, too)
>>>> Only if you don't know what IP addresses calls are going to be coming from. In this case, we can probably ask the provider what their IP addresses are and just explicitly allow them.
>>>> 
>>>> All fail2ban does is check the log files then set up relevant firewall blacklist rules, so for the same job you get slightly more CPU load too.
>>>> 
>>>> On 13 March 2013 10:28, Alex Lake <alex at digitalmail.com> wrote:
>>>>> Isn't fail2ban the usual solution here?
>>>>> > Hello. I hope someone can quickly see what I want to do and steer me in the right direction.
>>>>> >
>>>>> > I've looked at the documentation for acl.conf.xml                 and the SIP profile config file external.xml. I want to block incoming calls from all but a single external IP address and I'm sorry I just can't figure out how to do it or even if it can be done.
>>>>> >
>>>>> > We have a SIP trunk service with our VOIP provider. That means we have a static IP address which they use when they forward calls to us. They don't need to register, we just accept their calls but of course they have to be to our destination phone number. That all works and we have been very happy with Freeswitch for I don't know well over a year.
>>>>> >
>>>>> > Recently I became aware that someone is hammering our system trying to make calls. Our provider will only use port 5060 so that does mean our system is sitting on the internet with port 5060 open. Our dial plan works correctly and I can see in the log these calls are going nowhere. But they can be every few seconds and I suspect they might be using a lot of bandwidth just hammering the system.
>>>>> >
>>>>> > We will never receive calls from any other address than the one our VOIP provider will use to call us. So I just want to block SIP traffic from all addresses except theirs. I just want Freeswitch to stay silent when a call comes in on any other address, so there is no evidence that it is there to be attacked.
>>>>> >
>>>>> > I know I can do this with a firewall but I hope I can do it in Freeswitch itself. I am confused about the parameters auth-calls and auth-call and how to apply an access list that would restrict all calls to just one IP address. I did read somewhere in the docs that if you want to block calls you need to use a firewall and maybe that's the answer and so be it. Still I hope I can do it with Freeswitch so I can just apply the right ACL and sort the problem without creating new problems by introducing a firewall.
>>>>> >
>>>>> > Hope you can help.
>>>>> >
>>>>> >
>>>>> > Clive Lansink
>>>>> > Email: Clive at Lansink.Co.NZ
>>>>> > Phone: +64 9 520-4242
>>>>> > Mobile: +64 21 663-999
>>>>> > Fax: +64 21 789-150
>>>>> >
>>>>> > _________________________________________________________________________
>>>>> > Professional FreeSWITCH Consulting Services:
>>>>> > consulting at freeswitch.org
>>>>> > http://www.freeswitchsolutions.com
>>>>> >
>>>>> > 
>>>>> > 
>>>>> >
>>>>> > Official FreeSWITCH Sites
>>>>> > http://www.freeswitch.org
>>>>> > http://wiki.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
>>>>> >
>>>>> >
>>>>> > -----
>>>>> > No virus found in this message.
>>>>> > Checked by AVG - www.avg.com
>>>>> > Version: 2012.0.2240 / Virus Database: 2641/5668 - Release Date: 03/12/13
>>>>> >
>>>>> >
>>>>> 
>>>>> 
>>>>> _________________________________________________________________________
>>>>> Professional FreeSWITCH Consulting Services:
>>>>> consulting at freeswitch.org
>>>>> http://www.freeswitchsolutions.com
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> Official FreeSWITCH Sites
>>>>> http://www.freeswitch.org
>>>>> http://wiki.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
>>>> 
>>>> 
>>>> 
>>>> -- 
>>>> Andrew Cassidy BSc (Hons) MBCS SSCA
>>>> Managing Director
>>>> 
>>>> 
>>>> T 03300 100 960  F 03300 100 961
>>>> E andrew at cassidywebservices.co.uk
>>>> W www.cassidywebservices.co.uk
>>>> 
>>>> 
>>>> _________________________________________________________________________
>>>> Professional FreeSWITCH Consulting Services:
>>>> consulting at freeswitch.org
>>>> http://www.freeswitchsolutions.com
>>>> 
>>>> 
>>>> 
>>>> 
>>>> Official FreeSWITCH Sites
>>>> http://www.freeswitch.org
>>>> http://wiki.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
>>>> 
>>>> 
>>>> No virus found in this message.
>>>> Checked by AVG - www.avg.com
>>>> Version: 2012.0.2240 / Virus Database: 2641/5668 - Release Date: 03/12/13
>>>> 
>>> 
>>> 
>>> _________________________________________________________________________
>>> Professional FreeSWITCH Consulting Services:
>>> consulting at freeswitch.org
>>> http://www.freeswitchsolutions.com
>>> 
>>> 
>>> 
>>> 
>>> Official FreeSWITCH Sites
>>> http://www.freeswitch.org
>>> http://wiki.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
>> 
>> 
>> 
>> -- 
>> Andrew Cassidy BSc (Hons) MBCS SSCA
>> Managing Director
>> 
>> 
>> T 03300 100 960  F 03300 100 961
>> E andrew at cassidywebservices.co.uk
>> W www.cassidywebservices.co.uk
>> 
>> _________________________________________________________________________
>> Professional FreeSWITCH Consulting Services:
>> consulting at freeswitch.org
>> http://www.freeswitchsolutions.com
>> 
>> 
>> 
>> 
>> Official FreeSWITCH Sites
>> http://www.freeswitch.org
>> http://wiki.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://wiki.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
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