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Cisco Intrusion Prevention System Appliance and Module Installation Guide for IPS 7.1
OL-24002-01
CONTENTS
About This Guide
xv
Contents
xv
Audience
xv
Comply with Local and National Electrical Codes
xvi
Organization
xvii
Conventions
xviii
Related Documentation
xviii
Obtaining Documentation and Submitting a Service Request
xix
CHAPTER
1
Introducing the Sensor
1-1
Contents
1-1
How the Sensor Functions
1-1
Capturing Network Traffic
1-1
Your Network Topology
1-3
Correctly Deploying the Sensor
1-3
Tuning the IPS
1-3
Sensor Interfaces
1-4
Understanding Sensor Interfaces
1-4
Command and Control Interface
1-5
Sensing Interfaces
1-6
Interface Support
1-6
TCP Reset Interfaces
1-11
Interface Restrictions
1-12
Interface Modes
1-14
Promiscuous Mode
1-15
IPv6, Switches, and Lack of VACL Capture
1-15
Inline Interface Pair Mode
1-16
Inline VLAN Pair Mode
1-17
VLAN Group Mode
1-18
Deploying VLAN Groups
1-18
Supported Sensors
1-19
IPS Appliances
1-20
Introducing the IPS Appliance
1-21
Appliance Restrictions
1-22