Firewall Protection
190
NETGEAR ProSAFE VPN Firewall FVS318G v2
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 co
nnections 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 app
lets 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 applet
s, 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 a
re 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
t
he 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 trust
ed 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 suf
fixes (such as
.edu, .org, or .gov) can be viewed.
• If you wish to block all Internet bro
wsing access, enter . (period) as the keyword.
To enable and configure content filtering:
1. Log in to the unit:
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