[Asterisk-Users] NAT and SIP.conf update.

[Derek Conniffe]

Really?  I've found that a dynamic domain name --> IP linkup didn't work 
with Asterisk - it seemed to caches the IP of the domain name and didn't 
re-lookup the IP until after a reload.

Derek

Jens Vagelpohl wrote:

>> I've found a novel work-a-round:  I have a server on the Internet  in 
>> a data centre that maps a real static address to the dynamic IP  
>> address of the computer connected via. the ISP.  I've got a script  
>> that runs on the client ISP connected machine (its running Linux an  
>> the script is in the ppp-up.d directory so runs automatically  
>> everytime the pc reconnects and gets a new dynamic IP) - this  client 
>> script (perl) talks to the server daemon (also perl) and  then the 
>> data centre server re-maps the static IP to the dynamic IP  - it 
>> redirects (using socat - excellent software!) to redirect the  IAX2 
>> port and the RTP ports between the IP addresses so that the  normally 
>> dynamic IP addressed asterisk server now always has a real  live 
>> static IP address.
>>
>> This solution is working very well between two remote offices  
>> passing calls between the central data server computer.
>>
>> I wonder would this solution help many people? I now couldn't live  
>> without it. If other people are interested I could have a little  
>> business renting people static mapped IP addresses.
>
>
> Who needs that when there's dyndns and similar free services which  
> are even supported by many routers? I have a dyndns hostname and my  
> router is configured to contact the dyndns site whenever the IP on  
> the public side changes. Works very well for my Asterisk setup at home.
>
> jens
>
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-- 
Derek Conniffe
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