Mar 022013
 

Postfix it’s a great mailserver, but it’s not the easiest of the beast to tame if you aren’t an expert system administrator and just want to setup a mail service for your server and domain, so today I’ll show you how to install and configure PostfixAdmin a web based interface used to manage mailboxes, virtual domains and aliases. It also features support for vacation/out-of-the-office messages.

This software is compatible with different databases and IMAP/POP3 server, in the following article I’ll use Mysql as database server, on a Centos 6 Linux server.

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Jan 192013
 

When something goes wrong on your Linux server or desktop, is important to understand which process is taking all the resources, in the past I’ve published some information about top and htop, two great tools to have a general overview of your system with just a glance, but sometimes you need to gather more information of a particular process and for this task the command pidstat is perfect.

Pidstat is a statistics report tool for Linux which is part of the sysstat utilities. The pidstat command is used for monitoring individual tasks currently being managed by the Linux kernel. It writes to standard output activities for every task selected with option -p or for every task managed by the Linux kernel if option -p ALL has been used. Not selecting any tasks is equivalent to specifying -p ALL but only active tasks (tasks with non-zero statistics values) will appear in the report.
You can use PID’s and even regular expressions on the process names to filter them out.
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Oct 282011
 

Can Linux be infected by MalWare and is it a big concern? The answer to that question is both Yes and No: Yes, Linux can be Infected and No, it isn’t a big nightmare – yet.

Unless you downloaded the Unreal IRCd (Unreal IRC daemon) and installed it between November 2009 and June 2010 on your Linux server. There was a Trojan downloader in it. A Linux Trojan. See the Softpedia Article
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3 easy steps to strengthen your ssh server

Back on ssh topic, i think this is third or perhaps the fourth article regarding ssh, one of my favorite tools on a Linux server, and that a lot of times is not used or configured properly. In this small guide i’ll show you some setup to make your ssh server a bit more safer […]