Specifications

Define, via ‘Negate ACL’, an ACL to use in negated form.
A new rule is integrated with ‘Add’. It is then be listed in the list field
of defined ACLs.
With the black arrow keys, move a selected rule up or down in the list.
To edit rules, click the corresponding rule in the list field. The settings
appear in the upper part. Modify these and apply the changes with
‘Change’.
To delete rules, select the appropriate rule and click ‘Delete’.
Caution
The order of the rules in the list is very important, because
the list is processed from top to bottom. Depending on what
matches first, access to the requested URL is either given or
denied.
Caution
When you have made all changes, confirm the settings with ‘Next’.
Content Filter
This module is shown in Figure 3.36 on the next page. To filter HTML page
contents or to search for specific contents and possibly block them, activate
‘Content Filter’.
Note
You should be able to write HTML code to configure this filter. The
tags and attributes mentioned below are components of HTML, the
description language in which web pages are written.
Note
All filter settings created can be found in the lower part of the window.
HTML tags and attributes that are not defined are rejected.
Proceed as follows:
To create a filter rule, select the appropriate type from the selection
field with the same name. You have a choice of ‘tag’ and ‘attr’ (at-
tribute). In ‘Name’, enter the text of the tag or attribute then select an
action. It is possible to specify multiple actions. You have the choice of:
78 Using the FAS