By Ivan Ristic
This all-purpose consultant for locking down Apache palms readers with the entire info they should securely installation functions. directors and programmers alike will make the most of a concise creation to the idea of securing Apache, plus a wealth of sensible suggestion and real-life examples. issues lined comprise deploy, server sharing, logging and tracking, net functions, personal home page and SSL/TLS, and more.
With greater than sixty seven% of net servers working Apache, it truly is by way of a long way the main everyday net server platform on the earth. Apache has developed right into a strong approach that simply opponents different HTTP servers by way of performance, potency, and velocity. regardless of those striking services, notwithstanding, Apache is simply a invaluable instrument if it's a safe one.
To be certain, directors fitting and configuring Apache nonetheless want a sure-fire solution to safe it--whether it's working an enormous e-commerce operation, company intranet, or simply a small pastime site.
Our new consultant, Apache safety, provides directors and site owners simply what they crave--a entire safeguard resource for Apache. effectively combining Apache management and internet safety subject matters, Apache protection speaks to just about each person within the box. What's extra, it deals a concise advent to the speculation of securing Apache, in addition to a large point of view on server safety in general.
But this booklet isn't with regards to conception. the genuine energy of Apache protection lies in its wealth of attention-grabbing and functional recommendation, with many real-life examples and recommendations. directors and programmers will find out how to:
install and configure Apache
prevent denial of provider (DoS) and different attacks
securely percentage servers
control logging and monitoring
secure custom-written net applications
conduct an online safeguard assessment
use mod_security and different security-related modules
And that's simply the end of the iceberg, as mainstream Apache clients also will achieve invaluable info on Hypertext Preprocessor and SSL/ TLS. truly, Apache protection is packed and to the purpose, with lots of information for locking down this very hot and flexible net server.
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Additional info for Apache Security
This is a perfect example of security through obscurity. Scanners constantly probe all open ports on all Internet-connected IP addresses, and they're pretty good at figuring out what service is actually running on which port. Changing ports might buy you a couple of minutes against a dedicated intruder, but no longer. Changing ports can reduce the amount of random noise in your logs, increasing your odds of noticing real problems. You're better off having your firewall restrict access to known-friendly IP addresses.
My system has four users: backup, mwlucas, pkdick, and jgballard. They are in groups as below: wheel: mwlucas staff: mwlucas, pkdick, jgballard support: pkdick, mwlucas billing: jgballard While these are small groups, the principles apply to groups with any number of users. The billing application requires system accounts, but the user doesn't need access via SSH. If I just want to block the billing user from SSH, I could use DenyUsers. DenyUsers jgballard All users not listed would still have SSH access.
Sudo can be configured to authenticate via an SSH agent so that a user's password is never exposed to the server. Most readers of this book do not work in that environment. It is possible to override the security precautions and make sshd permit a login directly as root. It's such a bad idea that I'd consider myself guilty of malpractice if I told you how to do it. Chapter 12 discusses some ways to use sudo to avoid this requirement. Logging in as root via SSH almost always means you're solving the wrong problem.