Configuring AAA for Network Users 421

Binding User Authentication to Machine Authentication

Bonded Authentication™ (bonded authentication) is a security feature that binds an 802.1X user’s authentication to authentication of the machine from which the user is attempting to log on. When this feature is enabled, WSS Software authenticates a user only if the machine from which the user logs on has already been authenticated separately.

By default, WSS Software does not bind user authentication to machine authentication. A trusted user can log on from any machine attached to the network.

You can use Bonded Authentication with Microsoft Windows clients that support separate 802.1X authentication for the machine itself and for a user who uses the machine to log on to the network.

Network administrators sometimes use machine authentication in a Microsoft Active Directory domain to run login scripts, and to control defaults, application access and updates, and so on. Bonded Authentication provides an added security measure, by ensuring that a trusted user can log onto the network only from a trusted machine known to Active Directory.

For example, if user bob.mycorp.com has a trusted laptop PC used for work but also has a personal laptop PC, you might want to bind Bob’s authentication with the authentication of his workplace laptop, host/bob-laptop.mycorp.com. In this case, Bob can log on to the company network only from his work laptop.

When Bonded Authentication is enabled, WSS Software retains information about the machine’s session when a user logs on from that machine. WSS Software authenticates the user only if there has already been a successful machine authentication. Evidence of the machine’s session in WSS Software indicates that the machine has successfully authenti- cated and is therefore trusted by WSS Software. If WSS Software does not have session information for the machine,

Nortel WLAN Security Switch 2300 Series Configuration Guide

Page 421
Image 421
Nortel Networks 2300 manual Binding User Authentication to Machine Authentication