I understand that a special packet needs to be crafted to wake a machine.

 

My idea is to use my router to determine the state of the server - alive,dead/sleeping - and when it sees traffic for the server it will send the magic packet from the router.

 

I use DDWRT on my routers and you can run scripts that could send this packet for you. There are a number of addon scripts to check for ip access etc.

 

If it is too complicated looking for access on the main router, I guess that you could use 2 routers - one is dedicated to the server. By adding a route on the main, any access for the server will be redirected to the second router rather than the wan.

 

Is the idea feasible?

Tony

Here's a start: http://www.dd-wrt.com/wiki/index.php/Useful_Scripts#Web_Server_Wake-up

Thanks!, will have a play!