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CentOS

Mail Server Setup With Exim, MySQL, Cyrus-Imapd, Horde Webmail On Centos 5.1

Post date: February 21, 2008, 11:02 Category: Installing Views: 6745 Comments
Tutorial quote: This guide describes the installation and configuration of a mail system on Centos 5.1 with SELinux enabled for enhanced security. This system will be able to service HTTP, HTTPS, SMTP, TLS, SMTP-AUTH, IMAP, POP3 clients and is virtual enabled allowing more than one domain to be served from the system.
OpenBSD

Transparent proxying with squid and pf

Post date: May 17, 2005, 08:05 Category: Network Views: 12045 Comments
Tutorial quote: squid is a caching web proxy, it's set up between web browsers and servers, fetching documents from servers on behalf of browsers. It can accelerate web access by caching frequently requested pages and serving them from its cache. It can also be used to filter pop-up ads and malware or to enforce access control (which clients may request what pages based on different authentication methods).

Traditionally, the proxy is an optional component, and browsers are configured to actively use the proxy. Transparent proxying means forcing all web traffic through the proxy without the cooperation (or knowledge) of the clients. Once all browser connections pass through the proxy, outgoing connections to external hosts can be restricted to the proxy, and direct connections from local clients can be blocked.

The OpenBSD packet filter (pf) can be used to redirect connections based on various criteria, including source and destination addresses and ports. For instance, one can redirect all TCP connections with destination port 80 (HTTP) that arrive through an interface connected to local workstations to a squid proxy running on a different address and port.
Linux

Setting Up Postfix As A Backup MX

Post date: June 23, 2007, 01:06 Category: Miscellaneous Views: 3073 Comments
Tutorial quote: In this tutorial I will show how you can set up a Postfix mailserver as a backup mail exchanger for a domain so that it accepts mails for this domain in case the primary mail exchanger is down or unreachable, and passes the mails on to the primary MX once that one is up again.
Linux

How To Set Up VMware Tools On Various Linux Distributions

Post date: October 2, 2007, 07:10 Category: Miscellaneous Views: 7994 Comments
Tutorial quote: This document explains how to set up the VMware Tools in the following guest operating systems: Ubuntu 7.04, Fedora 7, PCLinuxOS 2007 and Debian Etch. Installing VMware Tools in your guest operating systems will help maximize performance, provide mouse synchronization and copy & paste functionality. This article also shows a way of making VMware Tools start automatically when you start a guest operating system.
Debian

Giving users a home directory automatically

Post date: June 16, 2006, 21:06 Category: System Views: 2872 Comments
Tutorial quote: If you are using LDAP or NIS to manage users you might discover users having problems because they don't have a home directory on each machine they can connect to. Thankfully there is a simple solution for creating home directories upon demand for users.

The Pluggable Authentication Modules library, or PAM, is a collection of shared libraries which control how users login to systems. There are a number of modules installed which can be used to restrict user access to systems in different ways. There are also several utility modules which can be used to customise login behaviour.
Debian

Supplying routing information using DHCP

Post date: December 10, 2006, 09:12 Category: Network Views: 3032 Comments
Tutorial quote: This article describes how to use DHCP to supply information about static routes to the clients on your network. You may want to do this if you have two or more local networks with routers between them. The DHCP software doesn't support this out-of-the-box, but it can be configured to do so without too much effort.
Linux

Automating Builds on Linux

Post date: April 13, 2005, 00:04 Category: Miscellaneous Views: 2582 Comments
Tutorial quote: An automated nightly build is a process for building an application every night using an infrastructure that automatically executes the required steps at the scheduled time, without any human intervention. A well-planned build process not only builds your application, but also provides you and your team with early detection of incompatible changes in the application components and early detection of errors introduced by newly integrated code. When configured and used properly, automated builds are a critical component for ensuring that the application satisfies quality requirements and continues to run as expected.
Unix+clones

How to securely send and retrieve your mail via SSH

Post date: April 18, 2005, 00:04 Category: Network Views: 2181 Comments
Tutorial quote: SSH allows you to create an encrypted network tunnel between your machine and other network. This document will show you how to set up this tunnel and then use it to securely send and retrieve your mail.
Debian

Monitoring Proftpd Server Using phpftpwho

Post date: August 5, 2007, 02:08 Category: Software Views: 2947 Comments
Tutorial quote: phpftpwho is a program written in PHP that tells you the status of your local FTP server. It uses the unix/linux
command ftpwho and formats and displays the information. The program is licensed under the GPL license.
OpenSUSE

The Perfect Server - OpenSUSE 11.3 x86_64 [ISPConfig 3]

Post date: July 22, 2010, 11:07 Category: Installing Views: 3335 Comments
Tutorial quote: This is a detailed description about how to set up an OpenSUSE 11.3 64bit (x86_64) server that offers all services needed by ISPs and hosters: Apache web server (SSL-capable) with PHP, CGI and SSI support, Postfix mail server with SMTP-AUTH, TLS and virtual mail users, BIND DNS server, Pureftpd FTP server, MySQL server, Dovecot POP3/IMAP, Quota, Firewall, etc.
Web-based applications and online marketing solutions - LumoLink