Cisco IPS 7.1 Installation Guide download pdf (Page 379)

GL-1

Cisco Intrusion Prevention System Appliance Hardware Installation Guide for IPS 7.1

OL-24002-01

GLOSSARY

Revised: September 30, 2014

Numerals

3DES

Triple Data Encryption Standard. A stronger version of DES, which is the default encryption method

for SSH version 1.5. Used when establishing an SSH session with the sensor. It can be used when the

sensor is managing a device.

802.x

A set of IEEE standards for the definition of LAN protocols.

AAA

authentication, authorization, and accounting. Pronounced “triple a.” The primary and recommended

method for access control in Cisco devices.

ACE

Access Control Entry. An entry in the ACL that describes what action should be taken for a specified

address or protocol. The sensor adds/removes ACE to block hosts.

ACK

acknowledgment. Notification sent from one network device to another to acknowledge that some event

occurred (for example, the receipt of a message).

ACL

Access Control List. A list of ACEs that control the flow of data through a router. There are two ACLs

per router interface for inbound data and outbound data. Only one ACL per direction can be active at a

time. ACLs are identified by number or by name. ACLs can be standard, enhanced, or extended. You

can configure the sensor to manage ACLs.

ACS server

Cisco Access Control Server. A RADIUS security server that is the centralized control point for

managing network users, network administrators, and network infrastructure resources.

action

The response of the sensor to an event. An action only happens if the event is not filtered. Examples

include TCP reset, block host, block connection, IP logging, and capturing the alert trigger packet.

active ACL

The ACL created and maintained by ARC and applied to the router block interfaces.

adaptive security

appliance

ASA. Combines firewall, VPN concentrator, and intrusion prevention software functionality into one

software image. You can configure the adaptive security appliance in single mode or multi-mode.

AIC engine

Application Inspection and Control engine. Provides deep analysis of web traffic. It provides granular

control over HTTP sessions to prevent abuse of the HTTP protocol. It allows administrative control

over applications that try to tunnel over specified ports, such as instant messaging, and tunneling

applications, such as gotomypc. It can also inspect FTP traffic and control the commands being issued.

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