Citrix Systems Network Router 9.2 User Manual

Page of 302
Chapter 12        Configuring Classic Policies and Expressions
205
For a complete list of protocols and qualifiers, see 
. The following choices appear for the HTTP protocol:
METHOD. Filters HTTP requests that use a particular HTTP 
method.
URL. Filters HTTP requests to a specific Web page.
URLQUERY. Filters HTTP requests that contain a particular query 
string, choose URLQUERY as your qualifier.
VERSION. Filters HTTP requests to a particular host.
HEADER. Filters based on a particular HTTP header.
URLLEN. Filters based on the length of the URL.
URLQUERY. Filters based on the query portion of the URL.
URLQUERYLEN. Filters based on the length of the query portion 
of the URL only.
5.
Under Operator, choose the operator for your policy expression. For a 
complete list of choices see the Operators table in 
. Some common operators are:
6.
If a Value text box appears, type a string or numeric value, as appropriate.
For example, you chose REQ as the Flow TypeHTTP as the Protocol, and 
HEADER as the qualifier, type the value of the header string in the Value 
Operator
Description
==
Matches the following string exactly, or is exactly equal to 
the following number.
!=
Does not match the following string.
>
Is greater than the following number.
<
Is less than the following number.
>=
Is greater than or equal to the following number.
<=
Is less than or equal to the following number.
CONTAINS
Contains the following string.
CONTENTS
The contents of the designated header, URL, or URL query.
EXISTS
The specified header or query exists.
NOTCONTAINS
Does not contain the following string.
NOTEXISTS
The specified header or query does not exist.