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Cisco Intrusion Prevention System Sensor CLI Configuration Guide for IPS 7.2
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Chapter19 Configuring the ASA 5585-X IPS SSP
Creating Virtual Sensors for the ASA 5585-X IPS SSP
The ASA 5585-X IPS SSP Virtual Sensor Configuration Sequence
Follow this sequence to create virtual sensors on the ASA5585-X IPS SSP, and to assign them to
adaptive security appliance contexts:
1.
Configure up to four virtual sensors.
2.
Assign the ASA 5585-X IPS SSP sensing interface (PortChannel 0/0), to one of the virtual sensors.
3.
(Optional) Assign virtual sensors to different contexts on the adaptive security appliance.
4.
Use MPF to direct traffic to the targeted virtual sensor.
Creating Virtual Sensors
Note
You can create four virtual sensors.
Use the virtual-sensor name command in service analysis engine submode to create virtual sensors on
the ASA 5585-X IPS SSP. You assign policies (anomaly detection, event action rules, and signature
definition) to the virtual sensor. You can use the default policies, ad0, rules0, or sig0, or you can create
new policies.Then you assign the sensing interface, PortChannel 0/0 for the ASA 5500-X IPS SSP, to
one virtual sensor.
The following options apply:
•
anomaly-detection—Specifies the anomaly detection parameters:
–
anomaly-detection-name name—Specifies the name of the anomaly detection policy.
–
operational-mode—Specifies the anomaly detection mode (inactive, learn, detect).
Note
Anomaly detection is disabled by default. You must enable it to configure or apply an
anomaly detection policy. Enabling anomaly detection results in a decrease in
performance.
•
description—Provides a description of the virtual sensor.
•
event-action-rules—Specifies the name of the event action rules policy.
•
signature-definition—Specifies the name of the signature definition policy.
•
physical-interfaces—Specifies the name of the physical interface.
•
no—Removes an entry or selection.
Creating Virtual Sensors
To create a virtual sensor on the ASA 5585-X IPS SSP, follow these steps:
Step 1
Log in to the CLI using an account with administrator privileges.
Step 2
Enter service analysis mode.
sensor# configure terminal
sensor(config)# service analysis-engine
sensor(config-ana)#