Parental controls

Firefox and the Mozilla Suite do not feature built-in parental controls, content filtering, pornography blocking, or website blocking features. Thanks to the extension mechanism, however, you can add these yourself. Additionally, web filtering software is available which will filter the internet for any program on your computer.

Extensions

The ProCon extension for Firefox provides a content blocking mechanism. It is suitable for blocking accidental visits to objectionable sites. It is not suitable for non-accidental visits because

• The filter is blunt, leaving many objectionable sites accessible and blocking access to non-objectionable sites
• It is very easily disabled
• It only affects Firefox/Seamonkey and not other applications like MSN Messenger or Internet Explorer.

Greasemonkey scripts

There are several Greasemonkey scripts which can be used to filter out vulgar language. As with ProCon, this does not filter for other programs, and is easily disabled.

• Melon's Censor
• Jmaxxz vulgar word blocker

Web Filtering Software

Many ISPs provide free parental control mechanisms. Contact your ISP for more information.

While no software can completely block all objectionable contact, third-party software exists that can provide a very high filter level. Some examples:

• Safe Eyes
• CyberPatrol
• Cybersitter
• DansGuardian

There are also a few sites which review the effectiveness of such filters:

• PC Magazine
• FilterReview.com
• Internet Filter Review 2006

Other Solutions

• See this article for more solutions to block sites.
• How to block content, parental controls, Surf anonymously
• No Block Sites Option? Why not?