What is MSCHAPv2 used for?

INTRODUCTION. Microsoft Challenge Handshake Authentication Protocol version 2 (MS-CHAP v2) is a password-based authentication protocol which is widely used as an authentication method in PPTP-based (Point to Point Tunneling Protocol) VPNs.

What is MSCHAPv2 in networking?

MS-CHAP is the Microsoft version of the Challenge-Handshake Authentication Protocol, CHAP. It is also used as an authentication option with RADIUS servers which are used with IEEE 802.1X (e.g., WiFi security using the WPA-Enterprise protocol).

Is MSCHAPv2 secure?

If you are using PEAPv0 with EAP-MSCHAPv2 authentication then you should be secure as the MSCHAPv2 messages are sent through a TLS protected tunnel. If you would not use a protected tunnel, then you are indeed vulnerable.

What is MSCHAPv2 EAP identity?

EAP-PEAP MSCHAPv2 Handshake Exchange Summary. The supplicant responds to the authenticator with an EAP Identity Response that contains the identity (username) used for authentication. This is referred to as the “Outer Identity.”

Are there any vulnerabilities in MS CHAP V-2?

Unfortunately MS-CHAP and MS-CHAP v-2, suffer from vulnerabilities due to the use of the desk protocol. Instead of using MS-CHAP, many people have migrated to L2TP, IPsec, or some other type of secure VPN communication. Category: CompTIA Security+ SY0-501. Comments are closed.

How does a vulnerability in PEAP MSCHAPv2 work?

In doing so it sends encrypted packets containing the user’s login information to the attacker’s computer. A well-documented weakness in PEAP-MSCHAPv2’s encryption method allows the attacker to easily decrypt the packets, thereby allowing the attacker to easily acquire the user’s login credentials.

Is the Extensible Authentication Protocol for MS-CHAP exposed to security threats?

The Extensible Authentication Protocol Method for Microsoft CHAP is exposed to the same security threats as MSCHAPv2 and needs to be protected inside a secure tunnel, such as the one specified in [MS-PEAP].

Why did Microsoft drop support for MS-CHAPv1?

Windows Vista dropped support for MS-CHAPv1. MS-CHAP is used as one authentication option in Microsoft’s implementation of the PPTP protocol for virtual private networks. It is also used as an authentication option with RADIUS servers which are used with IEEE 802.1X (e.g., WiFi security using the WPA-Enterprise protocol).