Please help. I have a Cisco 827 ADSL Modem / Router unit running V12.1 OS. Code Red traffic is irritating me terribly and inindating my IIS log files. I have placed an IP restriction in IIS for those computers making Code Red attempts at our web server, however, I would like to know how I can block IP addresses in the router so they never make it to the web server at all. I was hoping I could get a quick answer here before resorting to Cisco help ?? Anyone have a quick answer on how my router can block IP address or IP groups ??