NATTING

[compuomari <compuomari@xxxxxxxxx>]

Dears,
I have a scenario that is somehow making me have a hardtime , i have a 
wiless access point that get the internat access from my linux box, i 
want any user that uses my internet to get a lnading page for my self ( 
some kind of advertisment ) and then go to the internet , i don't need 
authentication , but i dont want this landing page occuring many more 
than once for the user ... anyhow , how can i do it with iptables? i 
want to DNAT all users to an internal apache server , then SNAT them to 
the inernet , how is that possible? double natting? proxying ? i need 
your help ..

regards,

oozie