Red Hat Linux Administration

The Registry vs Text Files

I think of the Windows Registry as the ultimate configuration database thousands upon thousands of entries, very few of which are completely documented, some located on servers and some located on clients. While it is possible to edit Registry entries manually, the fact that one does so using a graphical tool doesn't make the process intuitive. Consider this Windows .NET Server Registry setting In HKEY_LOCAL_MACHINE Management PrefetchParameters, set EnablePrefetcher to 0x00000003 to enable...

Want to learn more

We hope you enjoy this McGraw-Hill eBook If you'd like more information about this book, its author, or related books and websites, please click here. Dedicated to Amy, for her understanding, and to Stephanie, who asked all the right questions. I couldn't have done it without you. Michael Turner is a systems administrator, software engineer, author, and all around geek with over twenty years experience behind a computer keyboard. He first started working with UNIX in 1988 and has been working...

Securing an Individual Server

9.2 Understand TCP IP and Network Security 9.6 Find Helpful Resources Online 9.7 Be Aware of Security Miscellany You don't have to look hard to find that someone has discovered yet another new and exciting way to break into your systems. Sites such as http www.securityfocus.com and mailing lists such as BugTraq regularly announce such new exploits. And making the situation even more troublesome for system administrators is the proliferation of script kiddies. These individuals do not themselves...

CUPS Server Setup

The preferred method for setting up a CUPS server is to use the web-based administration interface. Unlike GUI tools that were attached as an afterthought by a third party, the CUPS web interface is thoroughly integrated into the CUPS system and is as capable as any other configuration method (although CUPS has its share of third-party GUI tools as well). Command-line tools also exist for CUPS configuration if you're working in a nongraphical environment. Directly editing the configuration...

Configuring Clients for CUPS

The CUPS RPMs are not divided along client server boundaries, so installing CUPS on a client machine matches what we did for the server you just won't configure any local printers. If your print server is on the same subnet on your client, then when a new printer is added to the server, on the client machine you will do nothing. Your new printer should show up as available to your client within about 30 seconds or so. Wasn't that easier than messing with etc printcap As you may have surmised,...

The Mechanics of SMTP

The SMTP protocol requires only that a host be able to send straight ASCII text to another host. Typically, this is done by contacting the SMTP port (port 25) on a mail server. You can do this using the Telnet program. For example michael cubicle telnet mailserver 25 where the host mailserver is the recipient's mail server. As you may be aware, the Telnet program's main purpose is to log in remotely to other machines. There are a number of reasons that it's no longer a good choice for doing...

Cleaning Up

Once the package is installed, you can do some cleanup to get rid of all the temporary files created during the installation. Some makefiles include rules for deleting all the files that are created during a build, and you can use that option (usually make clean) to return the source directory to its original state. root tedford kdirstat-2.2.0 make clean If you have retained the original source code tarball, it is okay to simply get rid of the entire directory from which you compiled the source...