So, I have this firewall setup for both NAT and SPI firewall mode. I have no port forwarding or port trigering and no DMZ established. According to Netgear's web site, you should NOT use a host-based firewall as it can interfere with the router's firewall.
I do not have much experience with PC-based firewalls so I am not sure this is the best course of action.
I would prefer to not use any software, since it saps performance. However, if I need to I will.
By the way, I have 3 Windows XP machines and 2 Linux machines.
Thanks for the help...Michael