Just my example. First I use OpenDNS to manage what sites
can be accessed and it provides logging. This monitors the traffic
out of your network from your public IP. http://opendns.org
Then I use my router to set specific rules for the machines inside
This lets me have control over my LAN without installing any extra software. (which can be bypassed by
enterprising young people)
Current systems: WHAT OS, BackTrack-raw, PCLinuxOS, Peppermint OS 6, Kali Linux
and a custom Linux From Scratch server hosting a bunch of top secret stuff.