August 2003
Intermediate to advanced
270 pages
10h 9m
English
Content preview from Kerberos: The Definitive Guide
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.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.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.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.
Kerberos KDC Planning
With the Kerberos realms mapped out, now we can begin planning the implementation details for each of our new realms. Figure 9-2 shows some planning activity. In that figure, there are two KDCs (unixkdc1 and unixkdc2) for the UNIX.SAMPLE.COM realm, and they are located in the production subnet. A conscious decision was made to replicate the data located in this important realm onto two machines, to ensure high availability. In addition, because of the sensitive nature of the data located on these servers, they are separated from the customer hosting network, presumably behind a restrictive firewall that prevents attackers from gaining access to the KDCs from the hosting network, in the case one of the customer hosting machines is compromised.
 |
Figure 9-2. Sample ISP’s network layout
Similar reasoning is used for the LABS.SAMPLE.COM Kerberos KDC placement. Only one KDC is deemed necessary for the labs realm, as it is used for experimental purposes and not for production. The KDC is placed inside the lab network to further isolate the lab environment from the rest of the network.
Next, the hardware and operating system need to be selected for these new Kerberos realms. A powerful machine is not required; the number of principals that will be located in either of these 2 realms is not great, probably under 100. Therefore, a mid-range, Intel-based machine running a free ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.