December 2011
Beginner
552 pages
13h 30m
English
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Two-Factor Authentication/Multifactor Authentication
As we have shown when reviewing RADIUS and TACACS, they are a means to securely authenticate to access a secure device. Those authentication methods relied on the user knowing a secret codeword or password, typically things the user knows. Although they are efficient, they are single layers in the defense of your network; additional layers, for defense in depth, are provided by using two-factor authentication. Two-factor authentication is when there are two independent and separate methods of authentication that the user must pass to gain access. Usually one of the two methods is something the user has that must be applied as part of the authentication process. You might think that this is ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.