Category: software

Link: How to protect Apache with Fail2ban

by Admin

Around 2 years ago I wrote an article about fail2ban.

Fail2ban is an intrusion prevention framework written in the Python programming language. It is able to run on POSIX systems that have an interface to a packet-control system or firewall installed locally (such as, iptables or TCP Wrapper).

Fail2ban’s main function is to block selected IP addresses that may belong to hosts that are trying to breach the system’s security. It determines the hosts to be blocked by monitoring log files (e.g. /var/log/pwdfail, /var/log/auth.log, etc.) and bans any host IP that makes too many login attempts or performs any other unwanted action within a time frame defined by the administrator.

Today I want to show you some configurations that you can use to improve the security of your Apache.

Read the rest here:
How to protect Apache with Fail2ban (Linuxaria)

If you ever play video using VLC and it is jerky or drops frames, try this

by Admin

In VLC’s preferences, note the setting for “Use GPU accelerated decoding” — on most systems with modern graphics hardware this should be checked, but is not by default. So, check the box and then click Save. You can always change it back if it makes things worse, or causes videos to not play at all.

VLC Preferences — Input and Codecs settings — use GPU accelerated decoding
VLC Preferences — Input and Codecs settings — use GPU accelerated decoding

This setting does not seem to be available in OS X versions of VLC.

Link: 10 Annoying Apps We’re All Stuck Using (and How to Make Them Better)

by Admin

There are probably at least two or three things on this list that you use almost every day, and some of you may use all of them:

10 Annoying Apps We’re All Stuck Using (and How to Make Them Better) (Lifehacker)

Linux: Bash scripts to switch displays using xrandr (via Reddit)

by Admin

We love simple solutions to problems, and this falls into that category.

A Reddit user has posted a pair of scripts to switch between two displays (a monitor and a TV) in Ubuntu 12.04, but these should be usable in many other versions of Linux as well. He writes:

I currently have a 40″ TV on HDMI (we’ll call this HDMI) and a 22″ monitor (DVI). I don’t want to dual screen these, I simply want one on at a time.

After a bit of difficulty at the start, this is what he came up with.

To switch the monitor off and the TV on:

#!/bin/bash
xrandr --output DVI --off
xrandr --output HDMI --auto
exit

To switch the TV off and the monitor on:

#!/bin/bash
xrandr --output HDMI --off
xrandr --output DVI --auto
exit

Be sure to make the scripts executable before running them.

Link: How to Install and Setup Monit (Linux Process and Services Monitoring) Program

by Admin

Monit is a free open source and very useful tool that automatically monitors and manages server process, files, directories, checksums, permissions, filesystems and services like Apache, Nginx, MySQL, FTP, SSH, Sendmail and so on in a UNIX/Linux based systems and provides an excellent and helpful monitoring functionality to system administrators.

The monit has user friendly web interface where you can directly view the system status and setup up processes using native HTTP(S) web server or via the command line interface. This means you must have web server like Apache or Nginx installed on your system to access and view monit web interface.

Continue reading: How to Install and Setup Monit (Linux Process and Services Monitoring) Program (TecMint)

Link: How to Install Asterisk 11 in RHEL/CentOS/Fedora and Ubuntu/Debian/Linux Mint

by Admin

Asterisk is an Open Source software PBX (Private Branch Exchange), developed by Mark Specer of Digium. It allows you to make calls to one another which may have connected to other PSTN (Public Switched Telephone Network) and Voice over Internet Protocol (VoIP). Asterisk runs on Linux, BSD, MacOSX and others. Having built-in features like voicemail, conferencing, IVR, queuing etc.

In this article, we are going to see a basic installation and working of Asterisk 11 in RHEL 6.4/6.3/6.2/6.1/6.0, CentOS 6.4/6.3/6.2/6.1/6.0, Fedora 18,17,16, Ubuntu 12.10/12.04/11.10, Linux Mint 14/13 and Debian Linux Operating Systems.

How to Install Asterisk 11 in RHEL/CentOS/Fedora and Ubuntu/Debian/Linux Mint (TecMint.com)

Link + notes: Configuration of APC UPS in Ubuntu

by Admin

The APC PowerChute utility will only run in Windows, but if you are running Ubuntu Linux (or some variation thereof) you can have pretty much the same thing by following the instructions in this article:

Configuration of APC UPS in Ubuntu (Tech-Niche)

The article suggests you install gapcmon but you probably don’t need to do that, because Ubuntu already includes a Power Statistics utility that works well enough for most users.

If you have problems getting it to work, make sure the USB cable is plugged into the correct jack on the UPS (with some models it’s easy to plug it into a network cable jack by mistake). From the command prompt issue the command lsusb and it will tell you what is connected to your USB ports — you should see an entry for “American Power Conversion Uninterruptible Power Supply” if the cable is correctly connected.

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