Although IPCop is a firewall package, it contains many pieces of functionality that are outside the scope of a plain firewall. DNS and DHCP functionality, for instance, are normally served by separate hosts. IPCop, designed for smaller deployments in which half a dozen different servers (router, firewall, DHCP server, DNS server, Proxy server, IDS, etc.) are simply not feasible, bundles all of this functionality together.
The Services tab is where we can configure many of the features in IPCop that are separate elements, and require more complex setup. Some of these are covered in their own chapter; others, which are almost always deployed with IPCop (such as DNS and DHCP), will be covered here.