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Paravirtualization With Xen On CentOS 5.6 (x86_64)
This tutorial provides step-by-step instructions on how to install Xen (version 3.0.3) on a CentOS 5.6 (x86_64) system. Xen lets you create guest operating systems (*nix operating systems like Linux and FreeBSD), so called "virtual machines" or domUs, under a host operating system (dom0). Using Xen you can separate your applications into different virtual machines that are totally independent from each other (e.g. a virtual machine for a mail server, a virtual machine for a high-traffic web site, another virtual machine that serves your customers' web sites, a virtual machine for DNS, etc.), but still use the same hardware. This saves money, and what is even more important, it's more secure. If the virtual machine of your DNS server gets hacked, it has no effect on your other virtual machines. Plus, you can move virtual machines from one Xen server to the next one.
Installing And Using OpenVZ On CentOS 5.6
In this HowTo I will describe how to prepare a CentOS 5.6 server for OpenVZ. With OpenVZ you can create multiple Virtual Private Servers (VPS) on the same hardware, similar to Xen and the Linux Vserver project. OpenVZ is the open-source branch of Virtuozzo, a commercial virtualization solution used by many providers that offer virtual servers. The OpenVZ kernel patch is licensed under the GPL license, and the user-level tools are under the QPL license.
The Perfect Server - CentOS 5.6 x86_64 [ISPConfig 2]
This tutorial shows how to set up a CentOS 5.6 server (x86_64) that offers all services needed by ISPs and web hosters: Apache web server (SSL-capable), Postfix mail server with SMTP-AUTH and TLS, BIND DNS server, Proftpd FTP server, MySQL server, Dovecot POP3/IMAP, Quota, Firewall, etc. This tutorial is written for the 64-bit version of CentOS 5.6, but should apply to the 32-bit version with very little modifications as well. In the end you should have a system that works reliably, and if you like you can install the free webhosting control panel ISPConfig 2 (i.e., ISPConfig runs on it out of the box).
Installing Zimbra Collaboration Suite 7 On CentOS 5.x (64Bit)
This article explains how to install Zimbra Collaboration Suite 7 (ZCS) on CentOS 5.x (64Bit). Zimbra is a collaboration suite very widely used in the world. Users can share folders, contacts, schedules and other things, using a very rich web interface. One important note is that we're using CentOS 5 64bits, that is not oficially supported by Zimbra team (only RHEL and SUSE are). But CentOS works fine with Zimbra.
The Perfect Server - CentOS 5.6 x86_64 [ISPConfig 3]
This tutorial shows how to prepare a CentOS 5.6 x86_64 server for the installation of ISPConfig 3, and how to install ISPConfig 3. ISPConfig 3 is a webhosting control panel that allows you to configure the following services through a web browser: Apache web server, Postfix mail server, MySQL, BIND nameserver, PureFTPd, SpamAssassin, ClamAV, and many more.
How To Configure PureFTPd To Accept TLS Sessions On CentOS 5.5
FTP is a very insecure protocol because all passwords and all data are transferred in clear text. By using TLS, the whole communication can be encrypted, thus making FTP much more secure. This article explains how to configure PureFTPd to accept TLS sessions on a CentOS 5.5 server.
Network UPS Tools (NUT) For USB UPSs On CentOS 5.5
This tutorial shows how to configure and use Network UPS Tools (NUT) software with an USB (Uninterruptible Power Supply) on CentOS 5.5. NUT is a software which supports several thousand models.
Send Instant Messages (Notifies) By XMPP (Jabber/Google Talk) From Linux Command Line
sendxmpp is a perl-script to send xmpp (jabber), similar to what mail does for mail. Obviously, to use sendxmpp , you need a jabber account; they are freely available at jabber.org, but you can also run your own server. The good news is, instant messaging between the Google Talk servers and its clients uses an open protocol, XMPP, allowing users of other XMPP/Jabber clients to communicate with Google Talk users. This tutorial shows how you can compile and install SendXMPP on CentOS 5.5 server.
How To Set Up Kippo SSH Honeypot On CentOS 5.5
Kippo is a medium interaction SSH honeypot designed to log brute force attacks and, most importantly, the entire shell interaction performed by the attacker. Kippo is inspired, but not based on Kojoney. This tutorial shows how you can compile and install Kippo on a CentOS 5.5 server.
Installing Debian Squeeze (6.0) domU On CentOS 5.5 x86_64 dom0
This tutorial shows how to create a Debian Squeeze (6.0) domU on dom0 running CentOS 5.5 x86_64.