3Com 3CRWE554G72T User Guide - Page 81

Firewall 81 To filter a specific site, enter the URL for that site. For example, to stop your users from browsing a site called www.badsite.com, enter www.badsite.com or badsite.com in one of the fields. If badsite.com has multiple sub-domains, such as this.badsite.com and that.badsite.com then you can either: ■ Block them individually by entering this.badsite.com in one field and that.badsite.com in another. or ■ Block them by entering the keyword badsite.com into one of the fields. This will block all URLs containing the string badsite.com. As well as blocking this.badsite.com and that.badsite.com, the keyword badsite.com would block searches that mentioned badsite.com in their domain name, for example www.notabadsite.com. 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. Computers that should not be subject to URL filtering can be excluded by ticking the Bypass URL Filter check box in the PC Privileges setup screen. See "PC Privileges" on page 77. Allow List To stop users from accessing any Web sites that you have not specifically allowed, choose Allow List in the URL Filter Type drop-down box (Figure 62).