Skip to main content

Configure Linux Firewalls Using iptables

Network security is a primary consideration in any decision to host a website as the threats are becoming more widespread and persistent every day. One means of providing additional protection is to invest in a firewall. Though prices are always falling, in some cases you may be able to create a comparable unit using the Linux iptables package on an existing server for little or no additional expenditure. read more...

Comments

Popular posts from this blog

Fixing Unix/Linux/POSIX Filenames

Traditionally, Unix/Linux/POSIX filenames can be almost any sequence of bytes, and their meaning is unassigned. The only real rules are that "/" is always the directory separator, and that filenames can't contain byte 0 (because this is the terminator). Although this is flexible, this creates many unnecessary problems. In particular, this lack of limitations makes it unnecessarily difficult to write correct programs (enabling many security flaws), makes it impossible to consistently and accurately display filenames, causes portability problems, and confuses users. more ....

Debian and Windows Shared Printing.

Debian GNU/Linux ( http://www.debian.org ) is the premier volunteer-supported Linux distribution. Unfortunately, setting up printers in Debian can be difficult. Also, simple step-by-step instructions for sharing printers between Windows and Linux using the latest tools are hard to find. This HOWTO was written to address both problems. This HOWTO will demonstrate how to use command-line tools to configure your Debian system for printing. It will explain how to send documents from Linux to Windows printers and how to share Linux printers with Windows PCs. Some troubleshooting examples are also given.

Backing up MySQL data.

Backing up files and directories is relatively easy; databases, however, have some special quirks that you need to address. Our examples use MySQL, but the same principles apply to PostgreSQL and other relational databases. This article is excerpted from O'Reilly's recently published book Linux System Administration .