ZoneMinder is the top Linux video camera security and surveillance solution. In this document I will cover how to get ZoneMinder up and running on Ubuntu 6.06.1 LTS or Dapper Drake with the recent updates included. The surveillance system I am covering here utilizes 4 Dome CCTV cameras hooked up to a single Kodicom kmc-8800 capture card, in addition I also used infra red LEDs so my cameras could see in the dark (Honestly I am abit scared to look). ZoneMinder also does a good job with IP Cameras, unfortunatly they are considerably expensive in my part of the world, hence 4 cameras would blow my budget.

http://www.howtoforge.com/video_surveillance_zoneminder_ubuntu