October 2002
Intermediate to advanced
448 pages
14h 54m
English
Content preview from Building Secure Servers with LinuxBecome 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.
Chapter 8. Securing Web Services
You’ve toiled for hours crafting your firewall rules and hardening your email and DNS services. You believe that no evil force could breach your fortress walls. But now you blast a hole straight through those walls to a port on your server. Then you let anyone in the world run programs on your server at that port, using their own input. These are signs of an unbalanced mind — or of a web administrator.
The Web has many moving parts and is a frequent source of security problems. In this chapter, I assume that you are hosting web servers and are responsible for their security. I dwell on servers exposed to the Internet, but most of the discussion applies to intranets and extranets as well. The platform is LAMP : Linux, A pache, M ySQL, P HP (and P erl). I’ll talk about A, M, and P here (with no slight intended to Java, Python, or other good tools). Protect your whole web environment — server, content, applications — and keep the weasels out of your web house.
For other views and details on web security, see Lincoln Stein’s World Wide Web Security FAQ (http://www.w3.org/Security/Faq/) and the book Web Security, Privacy and Commerce by Simson Garfinkel with Gene Spafford (O’Reilly).
Web Server Security
Bad things happen to good servers. What can happen? Where should you look? The Web has the same problems as the other important Internet services discussed in this book, differing mainly in the details.
Problems and Goals
Malice or mistake, whether local or ...
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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.