Redirecting internet access using NATD or IPFW

[Fotógrafo Marco Antonio 1]

I manage a small hotspot for internal access (intranet), but every logged have external access (internet).

I want block this internet access - e.g.: www.uol.com.br be fwd ou redirect (i dont know the difference), to 192.168.1.1(en0) or 192.168.0.2 (en2), internat OSX Server's page (home.html).

Could be in future, user access internet with some privileges.

 

It's running:

Radius Service to authentication

DHCP Service for IP.

NATD and Firewall to NAT hotspot.

The ISP (192.168.10.1), rote to 192.168.0.1 in D-Link router connected in 192.168.0.2 (en0) in OSX Server.

OSX Server's NIC 192.168.1.1 (en2), is connected to WiFi Router with 192.168.1.2 (where users log)

The OSX version is10.6.8.

 

Mission:

FWD or REDIRECT or or DIRECT all www calls to OSX Server page (http://192.168.1.1/BR.html)

Only allow intranet access

Forbbiden internet or extranet acess