Category Archives: 14.04 LTS

OpenVPN Server on Ubuntu 14.04

This tutorial will be installing an OpenVPN Server on Ubuntu 14.04 using routing and giving the external client full access to your LAN.

Installing an OpenVPN Server on Ubuntu 14.04 is not that difficult when you have already gained the necessary skills and knowledge for, IP addresses, netmasks, subnets, DNS names, IP routing, routers, network interfaces, LANs, gateways, and firewall rules.

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Changing the SWAP file Swapiness on Ubuntu 14.04

I have been asked several times about reducing the “swapiness” on a Linux machine to make the machine more responsive. So here is a post on how to do that. Remember just because you can does not make it a good thing to do.

If the machine has 8GB or more RAM turn down the swapiness. That is, if you do not want the system using swap until only 10-15% of RAM is left unused. Then this is the post for you.

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Setting up NTP on Ubuntu 14.04

This is a really quick post, as most Linux (or M$ Windows) installations will use/need an NTP server to keep the time in sync with other machines on the LAN.

Update and Install

As always, start with an up to date install. Installing the software is just two packages the server, ntp, and some utilities, ntpdate.

sudo apt-get update
sudo apt-get dist-upgrade
sudo apt-get install ntp ntpdate

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Installing Ubuntu 14.04 on RAID 1 and LVM

So you want an Ubuntu server machine running with RAID1 for reliability and LVM for flexibility.

TIP: Play around with this on a virtual machine. 
     It only takes 10 minutes for a new install.

I used a virtualbox guest. I created a test machine: 2CPUs, 2048MB RAM, 2 x 25Gb Hard disk.

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Joining an Ubuntu Machine to Samba with Winbind

This is the third part of a series of howtos showing how to setup and use Samba4 as a drop in for MS Active Directory Server. The first part Samba4 AD DC on Ubuntu 14.04 is here. The second part in this series take a look at Administering AD DC via Windows.

In this part we will connect an Ubuntu 14.04 machine to the domain and then login with users configured with Active Directory.

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Installing a Mailserver on Ubuntu 14.04 LTS Part 2

In this part we will be adding to the mail server created in Installing A Mailserver on Ubuntu 14.04 LTS Part 1, in this part we will be building on that and adding anti-virus and anti-spam software and a tool to greylist emails to cut down on the work our server has to do. This will be added to postfix via amavis-new.

The server called mailserver will end up running the following servers and services. Once all the parts of this series posts are completed.

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Installing a Mailserver on Ubuntu 14.04 LTS Part 1

Introduction

Why I wrote this.

I wrote this HOWTO as record of what I did to get my own mail server up and running. I can now and in the future follow these steps again and rebuild my own mail server. I hope it is of use to others too.

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Administering AD DC via Windows

This is the second part of a series of howtos showing one way to set up and use Samba4 as a drop in for MS Active Directory Server. The first part Samba4 AD DC on Ubuntu 14.04 is here

Let’s start by adding a small change to the Samba configuration on the AD, lab-addc1. Edit /etc/samba/smb.conf adding the following lines to the [globals] section.

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