Computers connected to a wide-area network are often connected through public networks, such as the telephone system. They can also be connected through leased lines or satellites. The largest WAN in existence is the Internet.

Data communication links
Collection of links to LAN, WAN and serial communications resources from Data Comm for Business, Inc.

PracticallyNetworked.com
PracticallyNetworked.com provides easy-to-understand help for small-network builders. The site contains how-to information for setting up and debugging home-office and small-business networks. Users can also find extensive troubleshooting information, tips on getting applications to work through firewalls, product reviews on network hardware and software, and more.

ServerWatch - Guide to Internet Servers and Platforms
Includes ratings, industry news, extensive reviews, and downloadable server software.

Webopedia's Quick Reference Section
Use this Webopedia reference section for information on common Internet and computer facts and occurrences.