How to restrict traffic through a RB450G for specific hosts

Hi all!

I ve set an RB450G as an Internet gateway but I am not 100% happy with how secure the system is. This is because if a user set’s the internal of IP of the router as the gateway he/she connects to the Internet.

I want to know how I could restrict everyone from getting traffic from the router except for a set of hosts I can preset.

Thanks for your help

Why don’t you try PPPoE, Hotspot or PPTP services? you can use one of them with MT user manager and it will satisfy you I think.
Hotspot >>>> http://wiki.mikrotik.com/wiki/Hotspot_server_setup
PPPoE >>>> http://wiki.mikrotik.com/wiki/PPPOE_Server