LAN Security Help

From: Kevin (cuitenghao_at_yahoo.com)
Date: 05/03/03 

Date: 3 May 2003 08:57:24 -0700

Dear all,

I recently got a project to built up a LAN (with wireless access
point), which has one computer acting as a host and connected to
Internet, and other computers within the LAN connect to Internet
through the host comeputer either by cable or wireless.

The point is I want the host computer to manage all internet access requests
from LAN clients, e.g.redirect firstly all ip packets from clients to
the host computer web server(then it can do something like
authentication, establish a secure tunnal with the client, etc.),
rather than just passively pass the packets forwards or backwards
bewteen the clients and Internet. But I'm not good at networking, so I
have no idea how to achieve that without writing any code except web
pages, and just utilize the service provided by OS, such as XP, Linux
or OpenBSD. Can any one give me some suggestion or direction as to how
to approach this kind of problem? Any advice are highly appreciated!

Thanks

Kevin

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