[truebluexxx]

I have a http server running on one of my computers 192.168.1.3
I used the 'port forwarding' option on my tp-link wireless router tl-wr541g to forward any connection on port 80 to computer 192.168.1.3 and it all works great.
The problem is, I now only want computers with IP address 192.168.1.x to be able to connect to the server and block all others. Can this be done using the wireless router setting? if not can it be done with McAfee virusscan + anti-spyware module 8.0.0 ? (this has some firewall options)