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Linux

Apt-For-RPM-Howto

Post date: April 12, 2005, 16:04 Category: System Views: 3445 Comments
Tutorial quote: In this short tutorial I will show how to install and use Debian's package manager apt on various rpm-based distributions like Fedora, Mandrake (or Mandriva, they changed their name...), RedHat, SUSE, and Yellow Dog Linux. apt for rpm is also known as apt4rpm, or aptrpm.
Linux

Network Monitoring with Zabbix

Post date: March 31, 2006, 21:03 Category: Software Views: 5728 Comments
Tutorial quote: ZABBIX is software that monitors numerous parameters of a network and the health and integrity of servers. ZABBIX uses a flexible notification mechanism that allows users to configure e-mail based alerts for virtually any event. This allows a fast reaction to server problems. ZABBIX offers excellent reporting and data visualisation features based on the stored data. This makes ZABBIX ideal for capacity planning.
FreeBSD

Some Vexim / Exim customizations

Post date: September 26, 2009, 11:09 Category: Software Views: 7715 Comments
Tutorial quote: How to apply the following changes to a Vexim mail server setup:
* Disable saving of passwords in clear text
* Tag spam in subject, not only in headers
* SMTP, POP and IMAP over SSL (multiple certificates/hosts)
* Option to automatically move spam to subfolders
* A shell script that parses folders and does some mainteance
* A Roundcube plugin that allows the users to edit their Vexim settings directly from the webmail settings page
Fedora+Core

Keeping Fedora Up to Date with Yum

Post date: April 13, 2005, 01:04 Category: System Views: 5052 Comments
Tutorial quote: Yum is an automatic updater and package management tool for rpm based systems. Yum automatically computes dependencies and figures out what steps need to occur in order to install packages. It makes it much easier to maintain groups of machines without having to manually update each one using rpm.
Unix+clones

Performance Tuning with GCC, Part 1

Post date: November 26, 2005, 01:11 Category: Optimizing Views: 4395 Comments
Tutorial quote: This article provides an overview of the different flags controlling optimization in GCC and some hints on how to use them to get the most performance out of your application. In particular, it discusses some of the new optimization features of the GCC 4.x series included in Fedora™ Core 4 and the upcoming Red Hat® Enterprise Linux® versions.
Debian

ASSP With Embedded ClamAV Integrated Into Postfix With Virtual Users And Domains

Post date: September 5, 2007, 01:09 Category: Security Views: 4318 Comments
Tutorial quote: This document describes how to integrate ASSP (Anti-Spam SMTP Proxy) with embedded ClamAV into a mail server based on Postfix featuring virtual users and domains, i.e. users and domains that are in a MySQL database.
Debian

How To Set Up A USB-Over-IP Server And Client With Debian Lenny

Post date: January 24, 2010, 01:01 Category: Installing Views: 4303 Comments
Tutorial quote: This tutorial shows how to set up a USB-over-IP server with Debian Lenny as well as a USB-over-IP client (also running Debian Lenny). The USB/IP Project aims to develop a general USB device sharing system over IP network. To share USB devices between computers with their full functionality, USB/IP encapsulates "USB I/O messages" into TCP/IP payloads and transmits them between computers. USB-over-IP can be useful for virtual machines, for example, that don't have access to the host system's hardware - USB-over-IP allows virtual machines to use remote USB devices.
Mandriva

How To Set Up A USB-Over-IP Server And Client With Mandriva 2010.0

Post date: April 13, 2010, 11:04 Category: Installing Views: 5036 Comments
Tutorial quote: This tutorial shows how to set up a USB-over-IP server with Mandriva 2010.0 as well as a USB-over-IP client (also running Mandriva 2010.0). The USB/IP Project aims to develop a general USB device sharing system over IP network. To share USB devices between computers with their full functionality, USB/IP encapsulates "USB I/O messages" into TCP/IP payloads and transmits them between computers. USB-over-IP can be useful for virtual machines, for example, that don't have access to the host system's hardware - USB-over-IP allows virtual machines to use remote USB devices.
Fedora+Core

IPTABLES Explained Part 4: IPTables and Portsentry, the dynamic duo

Post date: January 3, 2007, 10:01 Category: Security Views: 9356 Comments
Tutorial quote: A tutorial that explains on how to make Portsentry and IPTables to work smoothly together on Fedora. This includes the dynamic adding AND the periodic removal of "old" IPs as well as saving your blocked IP lists in case you need to change your IPTables script or reboot.
Unix+clones

How to Set Up a Jabber Server

Post date: April 12, 2005, 16:04 Category: Software Views: 7056 Comments
Tutorial quote: Unless you have been living under a rock for the past few years, you must have heard about instant messaging and how it has changed the world of communications over the Internet. According to http://www.webopedia.com, Instant Messaging (IM) is a service that alerts users when their friends or colleagues are on line and allows them to communicate in real time through private online chat areas. Two of the most popular IM services are AOL Instant Messenger (AIM) and MSN Messenger. Unfortunately, most of the publicly available servers use proprietary protocols that only allow you to communicate with users on the same system. These systems are not compatible with each other and can't be accessed from other clients.

Jabber is an open source implementation of the IM server that aims to change this. It uses streaming XML protocols that are free, open, and public. These protocols have been formalized by the Internet Engineering Task Force (IETF) as the approved instant messaging and presence technology under the name of XMPP. The first Jabber technologies were developed in 1998 by Jeremie Miller and is now used on thousands of servers world-wide to enable millions of users to communicate with each other.

The biggest advantage of the Jabber server when compared with commercial IM servers is that, since it is open source, anyone can run a Jabber server and it can be restricted to a specific community like a company work force or a group of friends. In this article, I will document the steps I took to set up a Jabber server and how I managed to overcome the difficulties I faced. Hopefully this will make it easier for you to set up your own Jabber server.
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