Filtering internet content help network administrators to protect networks in very efficient manner. Firewall or any anti-virus won’t do anything unless and until you deploy a proper content filtering. Keyword filtering also has the same impact on network security. Spammers now takes full advantage of SEO tricks to drive more and more users to legitimate websites.
Content filtering does not mean that you just block the porn websites or content, content filtering includes video or streaming content, Audio content, Software download websites. Spammers are also now using some new methods like mp3 files and other multimedia content to infect computer.
Keyword filtering includes block some particular websites or search engines URL’s that are generated for a set of keywords. Driving users to legitimate websites through keywords and search engines are becoming a very popular method to infect victims computer.
Network Administrator can go beyond this and block a rang of IP address and domain name.
