Citrix Systems 9.2 manual Flow Type.protocol.qualifier.operator.value.header Name

206 Citrix NetScaler Policy Configuration and Reference Guide

field and the header type for which you want to match the string in the Header Name text box.

7.Click OK.

8.To create a compound expression, click Add. Note that the type of compounding that is done depends on the following choices on the Create Policy dialog box:

•Match Any Expression. The expressions are in a logical OR relationship.

•Match All Expressions. The expressions are in a logical AND relationship.

•Tabular Expressions. Click the AND, OR, and parentheses buttons to control evaluation.

•Advanced Free-Form. Enter the expressions components directly in the Expression field, and click the AND, OR, and parentheses buttons to control evaluation.

To create a classic policy expression using the NetScaler command line

1.Start the policy as described in “To create a classic policy using the NetScaler command line,” on page 202.

add feature policy name -ruleexpression -actionaction

2.For expression, substitute a classic expression that defines the connections you want to match using this policy. This regular expression can take many forms, but all follow this syntax:

"<flow

type>.<protocol>.<qualifier>.<operator>[.<value>][.<header

name>]"

Note: All rules must be enclosed in double quotes.

For each of the designated elements, you substitute the appropriate value. The following list describes each element and provides the right values or explains how to determine what they are:

•Flow type. Whether the policy filters requests or responses.

The flow type can be either REQ or RES for Access Gateway or SSL policies. For Application Firewall policies, it is always REQ, because the Application Firewall filters each request and its associated response as a unit.