Network Security

Question 1

CHAP

Answer 1

Challenge Handshake Authentication Protocol

Authentication protocol designed to before more secure than the earlier PAP

Question 2

EAP

Answer 2

Extensible Authentication Protocol

Authetication protocol commonly used in wireless networks

Question 3

802.1X

Answer 3

IEEE defined network access standard

Auth requests are sent to controllers (WAPs, switches, etc) which in turn query an authentication server, often via RADIUS, to complete auth

Question 4

RADIUS

Answer 4

Remote Authentication Dial-In User Service

Common AAA system for network devices. Passwords are send via shared secret and MD5 hash, so not very secure.

Question 5

SDN

Answer 5

Software Defined Networking

System which dynamically configures networks

Question 6

SD-WAN

Answer 6

Software Defined Wide Area Network

Tools like MPLS which configure WANs dynamically

Question 7

SASE

Answer 7

Secure Access Service Edge

Combines multiple tools, such as SD-WAN, VPN, CASB and Zero Trust to provide secure access for devices regardless of location

Question 8

DKIM

Answer 8

DomainKeys Identified Mail

Adds a signature to messages which can be checked against a public key stored in a domain’s DNS

Question 9

SPF

Answer 9

Sender Policy Framework

System which allows orgs to publish a ist f authorized senders in their DNS

Question 10

DMARC

Answer 10

Domain-based Message Authentication Reporting

Utilizes SPF and DKIM to determine message authenticity.