ZyXEL Communications ZyWALL 10, Руководство пользователя

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ZyWALL 10 Internet Security Gateway
20-2 Content Filtering
20.1.3 Cookies
Cookies are used by Web servers to track usage. Cookies provide service based on ID. Unfortunately,
cookies can be programmed not only to identify the visitor to the site, but also to track that visitor's activities.
Because they represent a potential loss of privacy, some people may choose to block cookies.
20.1.4 Web Proxy
When a proxy server is located on the WAN it is possible for LAN users to circumvent content filtering by
pointing to this proxy server. This feature disables access to proxy servers located on the WAN. It has no
effect on those located on the LAN. For example, a user on the LAN could configure their Web browser to
point to one of the many public Web proxies on the Internet. When that user requests a Web page, their Web
browser formats the request for the proxy server, hiding it from the content filter. As a result, the user is able
to access unfiltered content on the Internet.
20.2 Blocking URLs
The ZyWALL may also block specific URLs by filling in the Domain Name field. The ZyWALL looks at
the rightmost part of URLs first, so when using this feature you should include the top-level domain name.
For example, to block access to the Playboy web site, you should enter “playboy.com” as the “domain
name” - not just “playboy”. The top-level American domains are listed here. Your local service provider is
probably part of the .
net domain, while your company is probably part of the . com domain.
COM commercial
EDU education
GOV government
ORG organizational
NET networks
INT International treaty organizations
MIL U.S. military organizations
20.3 Content Filtering Using the Web Configurator
Click on Main Menu , then click Filter to bring up the following screen.