Hello, I have a nic card and a ADSL modem. The ADSL modem thas NAT, Firewall, IP Filter and DHCP Server. The nic card has a private IP address and the modem has a public IP address. All just works fine. The firewall has attack protection and DOS protection both active. Need I more protection, on Windows 2000 and on Fedora Core 2? Thanks in advance, Vinicius.