This article discusses the design of a network that allows a device to roam between the office network and the outside (such as the home or coffee shop). We assume the roaming user will be accessing services on services that reside within the office network. There are other solutions such
Read moreAuthor: Andrew Galdes
A Linux and Cybersecurity expert in Australia.
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Recommended Apache and NginX Document Root Permissions
This article discusses the recommended way (AGIX recommended way) to permission your web root (document root) for an Apache or NginX server. We’ve found this method to be effective and acceptable for sysadmins and developers. A requirement of this solution is that the file system has ACL’s enabled. ACL’s will
Read moreMigrating an AWS VPC from one region to another
These notes will assist you in migrating your virtual private cloud (including EC2’s and an RDS) from one region to another. These notes are not a step by step guide but rather a high-level view of the requirements. You will need to create your VPC in the target region including
Read morePermitting Apache to use non-standard ports with SELinux
SELinux permits specified program to use specified ports. We must tell SELinux to permit programs to use non-standard ports if we intend to do something abnormal. For example, if we wanted to run Apache on port 81, we’d have to tell SELinux to permit that. Otherwise we’d get errors. When
Read moreConfigure Apache2 with PHP-FPM on CentOS
This document explains how to convert an Apache2+php server to Apache2+php-fpm. We’re staring from a system with Apache already installed and PHP working. Install the additional software: wget http://pkgs.repoforge.org/rpmforge-release/rpmforge-release-0.5.3-1.el6.rf.x86_64.rpm rpm -ivh rpmforge-release-0.5.3-1.el6.rf.x86_64.rpm yum install mod_fastcgi php-fpm This directory needs to exist: mkdir /usr/lib/cgi-bin Configure Apache/Httpd. Here is a sample virtual
Read moreSet the timezone on CentOS and Redhat
This is a simple one-liner to set the timezone on a CentOS or Redhat server. In this case i am in Adelaide, Australia. cp /usr/share/zoneinfo/Australia/Adelaide /etc/localtime Confirm the copy (is asked) and run ‘date’ to see the correct time. date
Read moreInstall VMWare Tools on CentOS 6.5
This article briefly describes the process of installing the VMWare tools on CentOS 6.5. Note that you need access (or someone does) to the VMWare portal to complete the initial steps. VMWare (for whatever reason) don’t allow downloads of the RPM’s. First make the RPM’s available to the guests. 1.
Read moreInstall RVM and Ruby 2.1.1 (or any other version) on CentOS/Redhat
This article is a short HowTo for installing RVM and then Ruby on a CentOS or Redhat system. As root: curl -sSL https://get.rvm.io | bash -s stable –ruby rvm list known Now as a normal user (not root): sudo rvm install 2.1.1 You can then run the following to confirm.
Read moreCreate a Virtual Private Cloud (VPC) in AWS with EC2s and RDS
This article describes each stage of creating a VPN within AWS. Amazon changes things from time to time so i won’t discuss where to click and on which links. But i will explain each stage. We’re going to create the VPC according to the diagram below. This is the simplest
Read moreSample Port Address Translation with Redhat/CentOS (/etc/sysconfig/iptables)
This is a sample iptables configuration file ‘/etc/sysconfig/iptables’ on a Redhat server where the server has a single interface and is placed in-front of other systems. In this example, this server (the one with the iptables config below) is infront of a web server at ‘10.0.0.2’. Don’t forget to enable
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