[Users] How to gaurd PSTN gateway with openser + NAT

[Bogdan-Andrei Iancu]

Hi Lokesh,

see my inline comments.

regards,
bogdan

Lokesh Kumar wrote:

>Hello Friends,
>
>I installed openser, it is working fine. sipsak-0.9.0 is also working fine,
>previously i was using 0.9.2 version of sipsak that is having problem.
>
>Now I want to ask you 2 important things.
>
>1>> Forget Asterisk for sometime, I am having a openser with one public IP
>and one private IP, and I am having one voip gateway which is connected to
>E1 PRI, and voip gateway is also having private IP. So, my question is can I
>forward all the calls coming on public IP of openser to voip gateway via
>private IP's of openser and voip gateway.After that voip gateway will
>forward the call to E1 PRI.
>SER Admin guide mentioned about how to gaurd your PSTN gateway with SER, but
>the documentation is not suffciente there. So, can you please suggest in
>this scenario, how do i can configure request routing in openser, like
>pstn.cfg file.
>
>  
>
this is a good practise - set your GW with private IP. Before relaying 
the calls to the GW, you need to force as send interface the private one:
    force_send_socket();
see http://www.openser.org/dokuwiki/doku.php?id=openser_core_cookbook

for inbound PSTN calls, be public IP will automatically forced by 
usrloc. if usrloc is not involved, force the public interface.

>2>> How do I have to register SIP phone on openser. Where the sip phones are
>behind the NAT, but NAT device supports STUN and UPnP. Do I need to setup
>seperate STUN server or I can run this service on openser server.
>
>  
>
you need to setup a STUN server, highly recommended on the same machine 
with openser. See mystun from berlios.de .

>Please help.
>Regards
>Lokesh
>
>
>----- Original Message -----
>From: <deepak.dhiman at uf4.net>
>To: "Lokesh Kumar" <lokesh at interacesso.pt>
>Sent: Tuesday, November 15, 2005 8:42 PM
>Subject: Re: Need Help in configuring Asterisk with SER and PSTN gateway
>
>
>  
>
>>Hi Lokesh !
>>
>>here i am writing my own experience baed views and facts: -
>>
>>1) openser i certainly better than ser with better nat handling tricks, it
>>also has got TLS support first time ina sip server and certain other
>>enhanced feature are alo there, that can be find out on www.voip-info.org
>>
>>2)sipsak is working fine on my pc and i really had no problem in
>>    
>>
>installing
>  
>
>>it, i have installed vesion sipsak-0.9.0
>>
>>3) i have not istalled any ser administrative program, so i can't tell you
>>which one is better.
>>
>>4) in case of Radius server try with radius 0.9.0.
>>
>>5) Finally, ser doesn't have any pstn support so you can't connect it to
>>    
>>
>the
>  
>
>>pstn gateway,
>>you can forward all sip packets to asterisk server and it would forward it
>>to pstn gateway and i think that's is the possible solution of your
>>    
>>
>problem.
>  
>
>>regards,
>>
>>Deepak
>>
>>Lokesh Kumar writes:
>>
>>    
>>
>>>Hello Deepak,
>>>
>>>Here are some of the questions which if you can respond then i will be
>>>      
>>>
>quite
>  
>
>>>happy.
>>>
>>>1>> What is the difference between SER and openSER and which one is best
>>>      
>>>
>to
>  
>
>>>adopt in terms of security and ease of use and customization.
>>>2>> I am unable to install sipsak on SER, it gives me error, when i
>>>      
>>>
>execute
>  
>
>>>make.
>>>3>> Which is the best web tool to manage SER, I tried SERweb and
>>>      
>>>
>SERadmin,
>  
>
>>>but unfortunately unable to configure them with SER
>>>4>> How do I have to setup a Voip trunk between asterisk and SER, where
>>>      
>>>
>SER
>  
>
>>>forwards any requests from asterisk to PSTN gateway.
>>>5>> How do I have to inter conect Radius with SER.
>>>
>>>I had searched everything on the internet but sufficiente documents are
>>>      
>>>
>not
>  
>
>>>available.
>>>
>>>Looking for your reply
>>>Thanks a lot
>>>Lokesh
>>>
>>>
>>>----- Original Message -----
>>>From: <deepak.dhiman at uf4.net>
>>>To: "Lokesh Kumar" <lokesh at interacesso.pt>
>>>Sent: Monday, November 14, 2005 8:49 PM
>>>Subject: Re: Need Help in configuring Asterisk with SER and PSTN gateway
>>>
>>>
>>>      
>>>
>>>>Hi Lokesh !
>>>>
>>>>I think u can easily configure it, let me know what have u tried so far
>>>>        
>>>>
>so
>  
>
>>>>that i can tell u exactly where is the problem..
>>>>
>>>>regard,
>>>>
>>>>Deepak
>>>>
>>>>Lokesh Kumar writes:
>>>>
>>>>        
>>>>
>>>>>Hello,
>>>>>
>>>>>Deepak,
>>>>>
>>>>>I got your mail from the asterisk lists. I wanted to ask you about
>>>>>          
>>>>>
>how
>  
>
>>>you had configured asterisk with SER. I am facing lots of difficulties
>>>      
>>>
>with
>  
>
>>>configuration of asterisk with SER. Can you please guide me . I will be
>>>      
>>>
>very
>  
>
>>>thankfull to you.
>>>      
>>>
>>>>>Regards
>>>>>
>>>>>          
>>>>>
>>>>
>>>>Software Engg. Trainee
>>>>Trail  Ridge Software India Pvt. Ltd.
>>>>Noida
>>>>
>>>>        
>>>>
>>
>>Software Engg. Trainee
>>Trail  Ridge Software India Pvt. Ltd.
>>Noida
>>
>>    
>>
>
>
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