If you have a Linux server out there somewhere in the internet, you probably want to secure it and reflect some of the most common attacks to your server. If you are just starting out with your first server you must know, your server will be attacked. There are automated bots and scripts that scan […]
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IPTables is a service on linux systems, which allows a system administrator to configure rules and chains in tables provides by the Linux kernel firewall. IPTables is a Linux firewall service which enables you to accept, reject or drop (,…) packages based on the rules you applied. In this post we will learn how to cofigure iptables […]
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Secure Shell (SSH) is a cryptographic network protocol for secure data communication. SSH is widely used on linux machines for console access and remote management. It is a server – client oriented network protocol which enables a secure communication between two network computers. The port on which SSH Server runs by default is 22. If […]
There are two possible configurations for Apache Proxy Server and we will present installation and configuration of both types this how to. Forward Apache Proxy is a proxy configuration that is commonly used in companies and it enables users to access the internet. Users or clients must configure their browsers or operating system to use a proxy server (Forward Apache […]
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If you are a linux system administrator one of the more important things to learn and to know is how to manage users and groups on linux systems. This guide will describe how to add, delete and modify users and groups (manage users and groups) on CentOS 6 linux (same applies to other linux distributions) […]
NFS is short for Network File System. NFS server allows you to share a filesystem from a computer on the network to other computers on the same network. NFS is a server/client oriented protocol so one computer acts as a server and other computers (clients) connect to it. We will install and configure Ubuntu NFS Server […]
Distributed Replicated Block Device is a great way to replicate filesystem over the network to another server or host. Distributed Replicated Block Device actually mirrors a whole block device over the network therefore it is often used for High Availability (HA) clusters. Distributed Replicated Block Device is actually a network based RAID 1. Distributed Replicated Block Device has […]
If you are looking for network card redundancy you can start by confguring network bonding on your Ubuntu Server 12.04 machine. Network cards with network bonding can be joined in multiple configuration options (active/active, active/backup,…). We will configure our network cards in “active/backup” configuration. This is a network bonding fallback configuration which means if one […]
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Learn Step-by-Step how to install Spacewalk open source Linux systems management solution. Do it the easy way, download an automated bash script.
Install DHCP Server on CentOS 6 Step-by-Step guide. Learn how to install and configure DHCP server on CentOS. Download automated GeekPeek.Net bash script.
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Learn how to use IP aliasing on CentOS 6. IP alias / IP aliasing is assigning multiple IP addresses to a single physical network interface.
Nagios Is The Industry Standard In IT Infrastructure Monitoring. Learn how to convert Nagios Log Unix Timestamp to human friendly and readable format.
