Handshake Authentication Protocol

Handshaking is one of the first steps toward authenticating.

Security is a vital part of having a network. In order to make sure your network stays as safe as possible there are multiple types of checks and bounds. Handshake Authentication Protocol is the first step in authenticating a user and providing them access to the network.

Function

Handshake Authentication Protocol starts when a user attempts to sign on to a computer or network resource. HAP will send a 5 digit algorithm called an "MD5" to the server that is authenticating users instead of sending the password. Once the authentication server verifies this MD5 algorithm it will then grant access to the computer and network.

Benefits

The benefits of using Handshake Authentication Protocol is that you do not have to be concerned about your password being picked up on by hackers who are attempting to steal your information. The only thing they can get is your username and the MD5 code which will not help them gain access.

When does it happen?

Handshake Authentication Protocol happens first when the user logs on to a computer or network resource. From time to time at no set interval the client computer will send the same credentials to the authentication server to make sure the user is still allowed to access the network.

References

• Microsoft: Challenge Handshake Authentication Protocol (CHAP)
• IETF: PPP Challenge Handshake Authentication Protocol (CHAP)