October 2020
Intermediate to advanced
481 pages
17h 35m
English
Content preview from Network Security, Firewalls, and VPNs, 3rd Edition
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Why Do You Need a Firewall?
High-speed Internet connectivity has become ubiquitous. Most computer users now have high-speed access at home, at work, and even on the go through mobile devices. Often, these broadband connections are always-on connections. This means computers and networks are online all the time—and exposed to attacks. A drawbridge is easy to cross if it is always down. When a system is always connected, it can be the focus of a concerted attempt to discover its vulnerabilities and breach its security.
How likely is it that a computer will be discovered and attacked over the Internet? It is almost guaranteed. Most systems are detected, scanned, and probed within minutes of obtaining a public IP address. It is technical suicide ...
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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.
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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.