September 2007
Intermediate to advanced
336 pages
9h 7m
English
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Concluding Thoughts
This chapter and Chapter 12 have illustrated powerful techniques in computer security, showing how a server can be protected by a default-drop packet filter, through which access is granted only to clients able to prove their identities to a passively monitoring device. Port knocking was the first technology to implement this idea, but due to some serious limitations in the port-knocking architecture (including the difficulty of adequately addressing the replay problem and the inability to transmit more than a few tens of bytes), SPA has proved itself a more robust technology. The notion of an authorizing Ethernet sniffer combined with a default-drop packet filter is a relatively new one in the computer security field, but ...
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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.