Lan-Party

A friend of me is trowing in a LAN-Party for over 150 People..
He asked me to make him a program that sets the IP adres to something he determent.
His idea was to put the doors open so everyone can get a place.
When they for example put everthing on spot let's say 27 they go to a staffmember. Pay the €10,- then get a Password and the program.
They enter the password in the program and then the program put's him on the network with the IP (130.0.0.127 (The first 100 are for Crew)) instead of the one that you're connected to (110.0.0.0).
I also know that they are connected with a dhcp server what the hell that may be... :confused:

I've NO idea were to start and how to do this..
Can someone tell me were I can find a tutorial or a Sample Source code..
My idea was to fix this using a p2p connection that drops every 5 minutes every IP that's NOT in some kind of list.. But he needs to know exacly what player is in what place (thats why the IP).

This is not something to just solve with a small program. This needs proper network hardware and someone who knows it in and out.

A better method, as I see it, is to have people take a place and then come to register with their place number and their MAC address. The DHCP is configured to not let anyone in unless they're explicitely registered. Then, at registration and after paying, someone there can associate the MAC address with the place-specific IP.

A small tool would help quickly modifying the DHCP configuration.

The main issue would be stopping people from just configuring a specific IP. This could be accomplished, for example, by encrypting the network, but that's rather a complicated configuration issue for everything but WLANs, which have this functionality built-in.

Ok, I already thought of something like that..
I'll report this message to him. He is a Netwerk engenier (Wrong Spelled Right..?) for living.

Thanks for you help