I know you can restrict people from accessing certain websites. Is there a way to limit people to only a handful of websites? I'd like to set up KDE on a work computer so I don't want people playing around on the internet.

you could use a proxy server like Squid http://www.linuxhomenetworking.com/wiki ... _Web_sites

I looked at your link and it looks like you can restrict certain websites, which KDE already does, or restrict users altogether, which I don't want to do. I have a public computer at work and all users share a single account (there are too many people to manage individual accounts for each). Furthermore, they need access to the internet but only to specific sites. Everything else gives them an opportunity to goof off.

did you look at the "Restricting Access to specific Web sites" section for Squid?

you could also try looking at a firewall instead:
- firestarter http://www.fs-security.com/docs/policy- ... estrictive
- FirewallBuilder http://www.fwbuilder.org/

you could even use iptables but I think then you would have to use actual ip addresses in defining sites and they can change

also it is possible to use a dns service like openDNS which in their commercial variants provide whitelist and Whitelist-Only capabilities http://www.opendns.com/web-filtering/