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Chapter 5
Expert Configuration
E-DOC-CTC-20050429-0104 v1.0
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5.3.2 Expressions
Overview Expressions are used in rules for source and destination interface, source and
destination IP address(es) (ranges) and services.
The Expressions page consists of three sections:
Interface
IP
Service
Interface The Interface section bundles all expressions that express a relation based on
Interfaces.
The Expressions table provides following information per expression:
The Name of the expression
A Summary of the expression’s configuration
For more detailed information you can expand the expression (click ).
Adding an interface
related expression
To add a new interface related expression:
1 Click New.
2 In the Interface Expressions Properties table:
Type a Name for the expression.
Select the Interface group the expression should relate to. For negative
logic, select Not.
Select the interface the expression should relate to. An interface is the
connection between the SpeedTouch™ and one of his attached networks.
For negative logic, select Not.
3 Click Apply.
Expressions are also used by the SpeedTouch™ Stateful Inspection Firewall.