Server-based tools, which reside on the computers (or servers) of the companies that offer filtered Internet access, can offer parents a high degree of security. Some of these tools allow customers to control where their kids can go on the Internet, and what they can do there. Others provide access to environments that simulate the Internet, with features such as email, chat rooms and Web sites - but don't allow kids to access the real Internet.

The following are two examples of such services:

• Closed online services for kids
  A closed online service permits the use of Internet tools such as email, newsgroups, chat rooms and Web sites, but prevents access to the open Internet. It's like a gated community, giving paid subscribers a private version of the Internet = with real sites "mirrored" on a closed server. These services allow parents complete control over their children's online experiences.
  
  
• Kid-friendly Internet Service Providers
  Internet Service Providers (ISPs), are the companies that provide access to the Internet and its services (such as email, newsgroups, chat rooms and the World Wide Web). In Canada a small number of ISPs offer filtered Internet access.

Some of these filtering services cannot be disabled = so if parents want to access the open Internet themselves, they'll have to pay for another unfiltered account.  Others allow customers to customize Internet access for each family member according to age.

Check with your ISP to find out if they offer filtered Internet access. Ask what criteria they are using to block sites.