Free Linux Tutorials
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Installation of KVM( Kernel-based Virtual Machine) Virtualization and Eve-NG in CentOS

by Free Linux
4 min read
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Installation of KVM and Eve-NG  Kernel-based Virtual Machine or KVM is an open source virtualization solution that can make your Linux Server as hypervisor. I will demonstrate also how to install Virtual Machine (VM), for...

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  • Tutorials

Installing Openstack RDO Packstack in CentOS

by Free Linux
8 min read
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Want to deploy Openstack and experience your own cloud platform the easier way? One way is to install Openstack via RDO Packstack*. *Packstack is a utility that uses Puppet modules to deploy various parts of OpenStack . It is...

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  • RaspberryPi
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Installing WordPress in Raspberry Pi with Nginx, MySQL and PHP

by Free Linux
5 min read
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It is meant to function as a staging or testing server where you can  do compatibility test  latest wordpress version on your existing sites, or try themes, plugins,widgets or practice your coding skills in css & php before...

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  • Tutorials

Configuring Multiple Interfaces and Multiple Default Routes in Linux

by Free Linux
4 min read
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Scenario: Multiple network interfaces in your server and each connected to different network and getting the IP via DHCP Objective: Make all IP pingable and accessible remotely e.g. SSH Solution: Configure Gateway Routing or...

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  • Tutorials

copy and send (tee) packets from a mirrored interface using iptables and ebtables

by Free Linux
2 min read
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Objective: to copy/send or tee packets coming from enp3s4f1 and send to a destination IP via the enp3s4f0 management/data port ServerA = enp3s4f1 (connected to a switch1 span port) (no IP address) enp3s4f0  (connected to...

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  • Tutorials

Installation and Setup of Free Tacacs+ server in Linux

by Free Linux
5 min read
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Installation & Setup of Free Tacacs+ server in Linux (Tested via GNS3 & VirtualBox) Software Used: GNS3 0.8.3.1 -use 3700 IOS as Router & DHCP -use Ethernet switch to connect hosts -use VirtualBox guest running on...

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  • Tutorials

SSH authentication via Public/Private keys

by Free Linux
4 min read
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For the tutorial “Securing your OpenSSH server in Linux” , key-based authentication is one way to secure your SSH server. Below are the details how it’s done: Users can login remotely to Secure Shell(SSH) server...

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  • Tutorials

Securing your OpenSSH server in Linux

by Free Linux
9 min read
1 Comment

Secure Shell (SSH) is a program used to secure communication between two entities, often used as a replacement for Telnet and the Berkeley protocols such as remote shell (RSH) and remote login (Rlogin). SSH is also used as a...

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  • Tutorials

Configure Centralized Syslog server in Linux & setup syslog clients on different platforms

by Free Linux
4 min read
3 Comments

Linux comes with a built-in syslog package that you can use as a centralized syslog server. Basically, it can be used to send all log files from your network devices or appliances in a remote and centralized location. There are...

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  • Tutorials

Install and Configure SNMP client on Linux

by Free Linux
3 min read
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The following procedure will install and configure snmp daemon on your Redhat-based distribution such as CentOS & Fedora. Here are the steps: 1. Verify if snmp package is installed, there are few ways [root@localhost ~]# rpm...

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