If you’d like to add an extra layer of protection between your computer and the web, OpenDNS is free and easy to set up.
Features include:
- Adult Content Filtering
- Anti-phishing/anti-malware technology
- Black/Whitelisting
- Parental control.
Fully documented, OpenDNS also has paid versions for schools and businesses.
Link: OpenDNS Homepage
Link: OpenDNS Knowledge Base page