with its content filtering feature, the fvm318 firewall prevents objectionable content from reaching your pcs. the fvm318 allows you to control access to internet with filtering options which include the following:
1 keyword blocking of newsgroup names.
2 activex, java, cookie, and web proxy filtering.
1 activex and java programs can be embedded in websites, and will be executed by your computer. these programs may sometimes include malicious content.
2 cookies are small files that a website can store on your computer to track your activity. some cookies can be helpful, but some may compromise your privacy.
3 web proxies are computers on the internet that act as relays for browsing. a web proxy can be used to bypass your web blocking methods.
3 outbound services blocking limits access from your lan to internet locations or services that you specify as off-limits.
4 blocks unwanted traffic from the internet to your lan.
5 blocks access from your lan to internet locations that you specify as off-limits.
the section below explains how to configure your firewall to perform these functions.
procedure 4-3: blocking functions, keywords, and sites
the fvm318 firewall allows you to restrict access to internet content based on functions such as java or cookies, web addresses and web address keywords.
1.log in to the firewall at its default lan address of http://192.168.0.1 with its default user name of admin, default password of password, or using whatever password and lan address you have chosen for the firewall.
2.click the block sites link of the security section of the main menu to view the screen below.
figure 4-2: block sites menu
3.to block activex, java, cookies, or web proxy functions for all internet sites, click the check box next to the function and then click apply.
4.to enable keyword blocking, check “turn keyword blocking on”, enter a keyword or domain in the keyword box, click add keyword, then click apply.
some examples of keyword application follow:
1 if the keyword “xxx” is specified, the url [http://www.badstuff.com/xxx.html] is blocked, as is the newsgroup alt.pictures.xxx.
2 if the keyword “.com” is specified, only websites with other domain suffixes (such as .edu or .gov) can be viewed.
3 enter the keyword “.” to block all internet browsing access.
up to 32 entries are supported in the keyword list.
5.to delete a keyword or domain, select it from the list, click delete keyword, then click apply.
6.to specify a trusted user, enter that pc’s ip address in the trusted user box and click apply.
you may specify one trusted user, which is a pc that will be exempt from blocking and logging. since the trusted user will be identified by an ip address, you should configure that pc with a fixed ip address.