Juniper NETWORK AND SECURITY MANAGER, Manual

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Creating a Custom Expression for Sensor Settings (NSM Procedure)
Custom expressions are strings that are made up of variables, operators, and
subexpressions all concatenated together. These operators and variables are provided
through an expressions dictionary.
To create a custom expression for sensor settings:
1.
In the NSM navigation tree, select Device Manager > Devices .
2.
Click the Device Tree tab, and then double-click the Secure Access device for which
you want to configure sensor settings.
3.
Click the Configuration tab. In the configuration tree, select System > Configuration
> Sensors .
4.
Select the Sensor Events tab.
5.
Click New to create a custom expression. The Custom Expression editor appears. On
the left side of the editor is the Expression Dictionary, which includes the following
custom expression building blocks:
•
Logical Operators: This node consists of logical operators that are used to build
expressions. Select a logical operator and click the
Insert Expression button to
insert logical operators in expressions.
•
Prebuilt Expressions: This node consists of expressions that function as templates
for custom expressions. Select a prebuilt expression and click the
Insert Expression
button. The prebuilt expression is displayed in the Expression area. Modify the values
to create your own custom expression.
• Variables: This node consists of variables. When a variable is selected, the conditional
operators that can be applied to this variable are listed in the center of the Custom
Expressions editor. Also, some variables have extensions that are displayed in the
drop-down list next to the variable. Double-click a variable to display its description
and example usage. Click the example variable to insert it in the Expression area.
•
IF-MAP Variables: This node consists of IF-MAP variables. Double-click a IF-MAP
variable to display its description and example usage. Click the IF-MAP variable
example to insert it in the Expression area.
• Juniper IDP Variables: This node consists of Juniper IDP variables. Double-click a
Juniper IDP variable to display its description and example usage. Click the Juniper
IDP variable example displayed to insert it in the Expression area.
NOTE: Refer to the Juniper Networks Secure Access Administration Guide
for more information on variables and writing custom expressions.
6.
Enter a name for the custom expression.
Copyright © 2010, Juniper Networks, Inc. 268
Configuring Secure Access Devices Guide