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

[Jens Vagelpohl]

> 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