The DHCP server distributes the IP addresses and updates the DNS server.

Name: ISC DHCP
HomePage: http://www.isc.org/sw/dhcp/
Function: Assigning dynamic IP addresses to devices on a network

Name: BIND9 DNS
HomePage: http://www.isc.org/index.pl?/sw/bind/
Function: BIND (Berkeley Internet Name Domain) is an implementation of the Domain Name System (DNS) protocols.

This how-to is only for using Dansguardian with different filter groups. This is not a Dansguardian setup tutorial.

The reason for this how-to is so you can have different levels of filtering, for example filter out everything for students were as only filter out what you feel the need to for staff members and allow almost everything for administrators.

Name: DansGuardian
HomePage: http://dansguardian.org/
Function: An Open Source web content filter that works on conjunction with a proxy server like squid.