Important Acronyms Ch 6 Network Components

Question 1

ARP

Answer 1

Address Resolution Protocol - ARP finds the hardware address, also known as Media Access Control (MAC) address, of a host from its known IP address.

Question 2

DLL

Answer 2

Dynamic Link Library - Used in Windows for data linking between applications.

Question 3

NAT (Firewalls)

Answer 3

Network Address Translation - Used by firewalls. Hides actual IP addresses in the network from to the rest of the internet.

Question 4

ACL (Firewalls)

Answer 4

Access Control List - Used in firewalls to create allow/deny traffic rules.

Question 5

SSL / TLS

Answer 5

Secure Sockets Layer / Transport Layer Security

Question 6

TCP

Answer 6

Transmission Control Protocol - (TCP) is a transport protocol that is used on top of IP to ensure reliable transmission of packets. TCP includes mechanisms to solve many of the problems that arise from packet-based messaging, such as lost packets, out of order packets, duplicate packets, and corrupted packets.

Question 7

UDP

Answer 7

The User Datagram Protocol (UDP) is a lightweight data transport protocol that works on top of IP.
UDP provides a mechanism to detect corrupt data in packets, but it does not attempt to solve other problems that arise with packets, such as lost or out of order packets. That’s why UDP is sometimes known as the Unreliable Data Protocol.
UDP is simple but fast, at least in comparison to other protocols that work over IP. It’s often used for time-sensitive applications (such as real-time video streaming) where speed is more important than accuracy.

Question 8

MAC

Answer 8

Media Access Control

Question 9

IPSec

Answer 9

Internet Protocol Security (asymmetric) - Security for OSI Layer 3. Authentication and encryption for every packet. Very standardized and common. Different firewall brands should have no problem communicating together. Two core IPSec protocols. Authentication Header (AH) protects Integrity, Encapsulation Security Payload (ESP) protects Confidentiality. You can do both AH and ESP separate or simultaneously.

Question 10

AH (IPSec)

Answer 10

Authentication Header

Question 11

ESP (IPSec)

Answer 11

Encapsulating Security Payload

Question 12

SNMP

Also
SNMPv1 (In the clear)
SNMPv2 (In the clear)
SNMPv3 (Secure)

Answer 12

Simple Network Management Protocol - Simple Network Management Protocol (SNMP) is an Internet Standard protocol for collecting and organizing information about managed devices on IP networks and for modifying that information to change device behavior.

Question 13

Telnet

Answer 13

Telnet, developed in 1969, is a TCP/IP protocol that provides a command line interface for communication with a remote device or server, sometimes employed for remote management but also for initial device setup like network hardware.

Question 14

SSH

Answer 14

Secure Shell - Secure Shell is a program to log into another computer over a network to execute commands in a remote machine. It’s basically a secure version of Telnet.

Question 15

IP

Answer 15

IP stands for “Internet Protocol,” which is the set of rules governing the format of data sent via the internet or local network.

Question 16

STP

Answer 16

Spanning Tree Protocol - Stops loops from occurring in switches.

Question 17

HSM

Answer 17

Hardware Security Module - Peripheral device used to store encryption keys.

Question 18

IKE/IKMP

Answer 18

Defined in RFC 7296, IKE is a protocol that enables two systems or devices to establish a secure communication channel over an untrusted network. The protocol uses a series of key exchanges to create a secure tunnel between a client and a server through which they can send encrypted traffic. The security of the tunnel is based on the Diffie-Hellman key exchange.

Question 19

ISAKMP

Answer 19

Internet Security Association and Key Management Protocol - One of 3 Key management protocols for IPSec.

Question 20

Oakley

Answer 20

One of 3 Key management protocols for IPSec.

Question 21

SKEMI

Answer 21

Secure Key Exchange Mechanism for Internet - One of 3 Key management protocols for IPSec.