This is a quick tutorial on disabling IPV6 in Fedora 12 and CentOS 5.5

Stop ip6tables service and disable it from starting automatically at system boot.

Enable centosplus repo to install php5 and mysql 5

What is IP Masquerading?

IP Masquerade is a form of Network Address Translation or NAT which NAT allows internally connected computers that do not have one or more registered Internet IP addresses to communicate to the Internet via the Linux server's Internet IP address. The software interface which enables one to configure the kernel for IP masquerading is iptables.

To configure IP Masquerading, you need to have two LAN cards, a PC with CentOS 4 Linux installed.
Install the LAN cards and configure the IP address of your public and private network.

1. Configure the IP address of your public network, it should be similar like this one.  full story »

1. Preparing for installation

Installation of Asterisk 1.4 is slightly different than installing Asterisk 1.2. There are some slight changes in the installation and some packages is needed. Asterisk GUI is available for Asterisk 1.4 only and the installation package is avalabe in Digium's svn repository. To install Asterisk GUI you need to download the subversion package.

Do the command:  full story »

By default Asterisk generates CDR records in a CSV files located in /var/log/asterisk/cdr-csv directory. Asterisk can also store CDR records in a database such as MySQL or PostgreSQL database as an alternative to CSV files. If your CDR records are stored in a database, you can install a web-based CDR analyzer to easily manage and analyze your CDR records like Asterisk-stat by http://areski.net.

Here are some features of Asterisk-stat  full story »

I created an auto install script to install Asterisk 1.2 for CentOS 4 and CentOS 5. This script will install the following:

• Zaptel
• Libpri
• Asterisk
• Asterisk Addons
• Open Source G729 Codec

Before running these script, you must install the some software needed to compile Asterisk.
For CentOS 4:

For CentOS 5:

kernel-smp-devel (instead of kernel-devel) is necessary if you are using a dual core processor.  full story »

Minimum Requirements

To install Asterisk server in your computer, please consider the minimum hardware and software requirements. These are the minimum requirements.

Operating system:  full story »

Please checkout this cool video about Asterisk. This video introduce the Asterisk capabilities and the advantage of using Asterisk PBX.

Kevin Rose is joined by John Todd, a well known, leading Asterisk expert, to introduce you to the amazing VoIP (Voice over IP) world of Asterisk, the open source voip telephony toolkit. In this episode, Kevin and John take you through the installation and configuration of this powerful tool, and show how it can be used to give anyone complete control over their phone experiences, such as voice over wifi, eliminating phone costs, choosing from hundreds of VoIP providers, creating your own voicemail and menus, and numbers that follow you..just to scratch the surface.

   full story »

Having a fully functional PBX system is not a big problem anymore. Thanks to Asterisk, you can now have a working PBX installed on your PC running GNU/Linux without spending a lot of money.

What is Asterisk?

Asterisk is an open source Private Branch Exchange (PBX) that runs on Linux, BSD and Mac OSX. It was created by Mark Spencer of Digium in 1991. Like any PBX, it allows a number of attached telephones (extensions) to make calls to one another, and to connect to other telephone services including the public switched telephone network (PSTN).

The basic Asterisk software provides all of the features you would expect from a proprietary PBX including: voicemail, conference calling, interactive voice response (IVR), and automatic call distribution (queue). These are just a few of the features that it can provide, you can view a list of supported features at Asterisk's Web site.  full story »

Preparing for Installation

I will assume that you already have the latest version of gcc and bison, and to install GnuGk 2.2.5 in your system you need to download these programs and install them prior to the installation of GnuGk.  full story »