3Com 3CRWDR200A-75-US User Guide - Page 76

76 CHAPTER 5: ROUTER CONFIGURATION System Tools To filter a generic keyword enter it into one of the fields. You should exercise caution when choosing a keyword as many keywords are contained within other words. For example, filtering the word sex would filter the following example URLs: ■ www.sussex.com ■ www.thisexample.com You can filter up to 30 keywords and URLs. 3 Please select from the mode to whether allow or deny the URL.Since URL Filter supersedes Content Filter, you may list your allowed URL here. The Router filters all traffic from domains that have been blocked using the URL filter. If you need to access an external mail server, FTP server or other named device outside your network, you must list it in one of the allow fields. Computers that should not be subject to URL filtering can be excluded by listing them as the full access PC's IP Addresses in the Filter Policy Tab. The main frame of the System Tools screen includes four administration items: Restart, Time Zone, Configuration, and Upgrade .