I'm setting up a webserver using Linux, Apache, and a fixed IP address.
Clients connecting will be Windows XP Pro. Their IP addresses are assigned by DHCP.
The Linux security texts I've consulted talk about network security in the context of fixed IPs. That is, things like tcpwrappers, xinetd, apache configuration files, and packet filtering in the kernel all imply that one goes about letting hosts connect to the server based on their IP address.
What to do if the addresses are assigned by DHCP?