Remote Access Authentication

Question 1

Virtual Private Network (VPN)

Answer 1

Allows someone working remotely, either from a hotel room or home, to connect securely through the internet to the corporate network.

Question 2

Remote Access Services (RAS)

Answer 2

RAS is a legacy protocol that pre-dated the VPN. The RAS client used modems and dial-up network using telephone lines. It was very restricted in speed.

Question 3

Password Authentication Protocol (PAP)

Answer 3

PAP should be avoided at all costs as the passwords are transmitted as clear text and can be easily captured.

Question 4

Challenge Handshake Authentication Protocol (CHAP)

Answer 4

CHAP was used to connect to connect to an RAS server with four-stage process
Connection Request
Random String Sent as Challenge
Uses client’s password to encrypt challenge
Logon allowed

Question 5

MS CHAP/MSCHAP version 2

Answer 5

They are Microsoft’s versions of MS CHAP. MS CHAP has been superseded by MS CHAP v2 and can be used by both VPN and RAS.