October 2020
Intermediate to advanced
481 pages
17h 35m
English
Content preview from Network Security, Firewalls, and VPNs, 3rd Edition
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Examining Your Network and Its Security Needs
According to the National Security Agency (NSA), attacks to systems connected to the Internet are becoming more complex and dangerous. For instance, hackers can penetrate computer systems, using a variety of techniques to exploit weaknesses hidden in the complex code of many operating systems and applications.
What to Protect and Why
Internet-facing servers are accessible to people anywhere in the world who have Internet access, and these servers are often targets of attacks. They include web servers, email servers, File Transfer Protocol (FTP) servers, and more. If a server has a public IP address, it is a potential target for hacker attack. Firewalls also protect internal clients by providing ...
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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.