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How to setup an IM / VOIP server using Openfire...

Feb 27 2015 03:27 AM | brent in News

If you looking for an alternative to public IM and VOIP services like Skype and want to create a private secure IM / VOIP network, this guide is for you.

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Password Policy

Feb 17 2013 01:20 AM | brent in News

A strong password policy is one of the most important aspects of your security posture. Many successful security breaches involve simple brute force and dictionary attacks against weak passwords.

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How To Change Default SSH Port in Ubuntu

Feb 27 2013 07:19 PM | brent in News

Note: Changing your default ssh port does not guarantee that you won't get hacked. How ever changing the default really helps cut down on the attempts. Please make sure you have other secure practices in place such as strong passwords.

What is SSH?

SSH is program and protocol for securely connecting into remote machines across a network. It allows you to run programs, and do a variety of tasks as if you were sitting at the machine. SSH is very similar to telnet except for it is with encryption to protect the transferred information and authentication.

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How to Create a SSL Certificate on Apache for U...

Feb 21 2013 05:26 PM | brent in News

In this tutorial we are going to setup and install a self signed ssl certificate for apache.

We need to have apache installed and running. If you do not have apache installed simply install with.

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how to setup postfix to send emails out with gmail

Feb 20 2013 10:57 AM | brent in News

Postfix is a Mail Transport Agent (MTA), supporting LDAP, SMTP AUTH (SASL), TLS and running in a chroot environment. Postfix is Wietse Venema's mailer that started life as an alternative to the widely-used Sendmail program. Postfix attempts to be fast, easy to administer, and secure, while at the same time being sendmail compatible enough to not upset existing users. Thus, the outside has a sendmail-ish flavor, but the inside is completely different. This software was formerly known as VMailer. It was released by the end of 1998 as the IBM Secure Mailer. From then on it has lived on as Postfix. This rpm supports LDAP, SMTP AUTH (trough cyrus-sasl) and TLS. If you need MySQL too, rebuild the srpm --with mysql.

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Setting up a static IP

Feb 17 2013 06:55 PM | brent in News

The following steps will guide you through setting up your server to use a static IP address on CentOS.

Assuming the network interface is supported and detected under CentOS, you will find that the configuration files required to set the IP address can be found under /etc/sysconfig/network-scripts.

The files to look for are ifcfg-eth# where # is the network interface number, starting from 0.

This example will assume that you want to set up the static IP address on the first network interface.

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