Cisco IPS 7.1 Installation Guide download pdf (Page 385)

Glossary

GL-7

Cisco Intrusion Prevention System Appliance Hardware Installation Guide for IPS 7.1

OL-24002-01

DES

Data Encryption Standard. A strong encryption method where the strength lies in a 56-bit key rather

than an algorithm.

destination address

Address of a network device that is receiving data.

DIMM

Dual In-line Memory Modules.

DMZ

demilitarized zone. A separate network located in the neutral zone between a private (inside) network

and a public (outside) network.

DNS

Domain Name System. An Internet-wide hostname to IP address mapping. DNS enables you to convert

human-readable names into the IP addresses needed for network packets.

DoS

Denial of Service. An attack whose goal is just to disrupt the operation of a specific system or network.

DRAM

dynamic random-access memory. RAM that stores information in capacitors that must be refreshed

periodically. Delays can occur because DRAMs are inaccessible to the processor when refreshing their

contents. However, DRAMs are less complex and have greater capacity than SRAMs.

DTE

Data Terminal Equipment. Refers to the role of a device on an RS-232C connection. A DTE writes data

to the transmit line and reads data from the receive line.

DTP

Dynamic Trunking Protocol. A Cisco proprietary protocol in the VLAN group used for negotiating

trunking on a link between two devices and for negotiating the type of trunking encapsulation (ISL or

802.1q) to be used.

ECLB

Ether Channel Load Balancing. Lets a Catalyst switch split traffic flows over different physical paths.

egress

Traffic leaving the network.

encryption

Application of a specific algorithm to data to alter the appearance of the data making it

incomprehensible to those who are not authorized to see the information.

engine

A component of the sensor designed to support many signatures in a certain category. Each engine has

parameters that can be used to create signatures or tune existing signatures.

enterprise network

Large and diverse network connecting most major points in a company or other organization. Differs

from a WAN in that it is privately owned and maintained.

escaped expression

Used in regular expression. A character can be represented as its hexadecimal value, for example, \x61

equals ‘a,’ so \x61 is an escaped expression representing the character ‘a.’

ESD

electrostatic discharge. Electrostatic discharge is the rapid movement of a charge from one object to

another object, which produces several thousand volts of electrical charge that can cause severe damage

to electronic components or entire circuit card assemblies.

event

An IPS message that contains an alert, a block request, a status message, or an error message.

Event Store

One of the components of the IPS. A fixed-size, indexed store (30 MB) used to store IPS events.

evIdsAlert

The XML entity written to the Event Store that represents an alert.

1 ... 384 385 386 ... 422

Comments to this Manuals

No comments

Cisco IPS 7.1 Installation Guide Page 385

Comments to this Manuals

Related products and manuals for Networking Cisco IPS 7.1