Netgear FVS318Gv2 – ProSAFE VPN Firewall Series Manual De Referência

Several types of blocking are available:

Web component blocking. Even sites that are listed in the Trusted Domains table are 
subject to web component blocking when the blocking of a particular web component is 
enabled. You can block the following web component types:

Proxy. A proxy server (or simply, proxy) allows computers to route connections to 
other computers through the proxy, thus circumventing certain firewall rules. For 
example, if connections to a specific IP address are blocked by a firewall rule, the 
requests can be routed through a proxy that is not blocked by the rule, rendering the 
restriction ineffective. Enabling this feature blocks proxy servers.

Java. Blocks Java applets from being downloaded from pages that contain them. 
Java applets are small programs embedded in web pages that enable dynamic 
functionality of the page. A malicious applet can be used to compromise or infect 
computers. Enabling this setting blocks Java applets from being downloaded. 

ActiveX. Similar to Java applets, ActiveX controls are installed on a Windows 
computer running Internet Explorer. A malicious ActiveX control can be used to 
compromise or infect computers. Enabling this setting blocks ActiveX applets from 
being downloaded. 

Cookies. Cookies are used to store session information by websites that usually 
require login. However, several websites use cookies to store tracking information 
and browsing habits. Enabling this option blocks cookies from being created by a 
website.

Many websites require that cookies be accepted for the site to be accessed correctly. 
Blocking cookies might interfere with useful functions provided by these websites. 

Keyword blocking (domain name blocking). You can specify up to 32 words to block. If 
any of these words appear in the website name (URL) or in a newsgroup name, the 
website or newsgroup is blocked by the VPN firewall.

You can apply the keywords to one or more LAN groups. Requests from the computers in 
the groups are blocked where keyword blocking is enabled. Blocking does not occur for 
the computers in the groups where keyword blocking is disabled.

You can bypass keyword blocking for trusted domains by adding the exact matching 
domain to the Trusted Domains table. Access to the domains or keywords on this list by 
computers in the groups for which keyword blocking has been enabled is allowed without 
any blocking.

Here are some keyword application examples:

If the keyword xxx is specified, the URL http://www.companycom/xxx.html is blocked, 
as is the newsgroup alt.pictures.xxx.

If the keyword .com is specified, only websites with other domain suffixes (such as 
.edu, .org, or .gov) can be viewed.

If you wish to block all Internet browsing access, enter . (period) as the keyword.

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