How do I force users to use 192.168.1.1:3128 as their proxy?

ADDITIONAL INFORMATION:

My Routefinder uses the default gateway 192.168.1.1 If I simply leave their browser alone, they find their way out via the Default Gateway. Is there a way to block port 80 outbound from anything other than 192.168.1.1:3128 whereby forcing the users to have to use Proxy Settings?


RESPONSE:

You must setup proxy in the client Browser:

- Bring up your internet browser IE

- Click on Tools and Internet options

- Click on connections

- Click on LAN Settings

- Enable proxy server

- Enter the LAN IP address of the RF660VPN and enter port number 3128


To block port 80, setup a packet filter rule :

LAN - HTTP - Any - DROP