ZyXEL Communications ZYWALL 1050 - V2.00 EDITION 1 Uživatelská příručka stáhnout pdf (Strana 203)

Chapter 22 Content Filtering

ZyWALL (ZLD) CLI Reference Guide

203

trust_hosts The IP address or domain name of a trusted web site. Use a host name such

as www.good-site.com. Do not use the complete URL of the site – that is, do

not include “http://”. All subdomains are allowed. For example, entering

“zyxel.com” also allows “www.zyxel.com”, “partner.zyxel.com”,

“press.zyxel.com”, etc. Use up to 63 case-insensitive characters (0-9a-z-).

You can enter a single IP address in dotted decimal notation like 192.168.2.5.

You can enter a subnet by entering an IP address in dotted decimal notation

followed by a slash and the bit number of the subnet mask of an IP address.

The range is 0 to 32.

To find the bit number, convert the subnet mask to binary and add all of the

1’s together. Take “255.255.255.0” for example. 255 converts to eight 1’s in

binary. There are three 255’s, so add three eights together and you get the bit

number (24).

An example is 192.168.2.1/24

You can enter an IP address range by entering the start and end IP addresses

separated by a hyphen, for example 192.168.2.5-192.168.2.23.

forbid_hosts The IP address or domain name of a forbidden web site.

Use a host name such as www.bad-site.com into this text field. Do not use the

complete URL of the site – that is, do not include “http://”. All subdomains are

also blocked. For example, entering “bad-site.com” also blocks “www.bad-

site.com”, “partner.bad-site.com”, “press.bad-site.com”, etc. Use up to 63

case-insensitive characters (0-9a-z-).

You can enter a single IP address in dotted decimal notation like 192.168.2.5.

You can enter a subnet by entering an IP address in dotted decimal notation

followed by a slash and the bit number of the subnet mask of an IP address.

The range is 0 to 32.

To find the bit number, convert the subnet mask to binary and add all of the

1’s together. Take “255.255.255.0” for example. 255 converts to eight 1’s in

binary. There are three 255’s, so add three eights together and you get the bit

number (24).

An example is 192.168.2.1/24

You can enter an IP address range by entering the start and end IP addresses

separated by a hyphen, for example 192.168.2.5-192.168.2.23.

keyword A keyword or a numerical IP address to search URLs for and block access to

if they contain it. Use up to 63 case-insensitive characters (0-9a-zA-Z;/

?:@&=+$\.-_!~*'()%,) in double quotes. For example enter “Bad_Site” to block

access to any web page that includes the exact phrase “Bad_Site”. This does

not block access to web pages that only include part of the phrase (such as

“Bad” in this example).

message The message to display when a web site is blocked. Use up to 255 characters

(0-9a-zA-Z;/?:@&=+$\.-_!~*'()%,) in quotes. For example, “Access to this web

page is not allowed. Please contact the network administrator.”

redirect_url The URL of the web page to which you want to send users when their web

access is blocked by content filtering. The web page you specify here opens

in a new frame below the denied access message.

Use “http://” followed by up to 255 characters (0-9a-zA-Z;/?:@&=+$\.-

_!~*'()%) in quotes. For example, “http://192.168.1.17/blocked access”.

license The license key (up to 15 characters) for the external web filtering service.

service_timeout The value specifies the maximum querying time in seconds <1…60>

_timeout The value specifies the maximum life time in hours <1..720>.

url The URL of a web site.

Table 107 Content Filter Command Input Values (continued)

LABEL DESCRIPTION

1 2 ... 198 199 200 201 202 203 204 205 206 207 208 ... 385 386

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