Category Archives: System Administration

Ubuntu 16.04 Minimal Server Install.

4 Replies

This post will, quickly, run through how to create a Minimal Server Install using Ubuntu 16.04. It also only takes a short time, taking between 7 to 20 minutes to install depending on your hardware and the number of times you have run through it. I find it an ideal way to try out and learn how to install Ubuntu in various configurations. I also use a virtual machine running on Virtualbox as this allows me to throw it away without messing about with real hardware.

Continue reading →

Installing LDAP on Ubuntu 18.04

Leave a Reply

This post will run through Installing LDAP on Ubuntu 18.04. Allowing you to authenticate users via LDAP. As well as setting up thier Linux groups. You will need a server or desktop install to begin with. Lightweight Directory Access Protocol (LDAP) is a network protocol for accessing and manipulating information stored in a directory. 

This HOWTO also works on a Raspberry PI 3 running the Ubuntu MATE image!

Continue reading →

OpenVPN Server on Ubuntu 14.04

1 Reply

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.

Continue reading →

Setting up NTP on Ubuntu 14.04

6 Replies

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

Continue reading →

Recovering from a RAID1 disk failure on Ubuntu 14.04

1 Reply

This is the second part of my posts on using RAID1 on Ubuntu 14.04, if you missed the first part see it here Installing Ubuntu 14.04 on RAID 1 and LVM

So your shiny RAID1 array lost a disk. DO NOT PANIC.

I’ll say that again, as you probably missed it in your panic.

DO NOT PANIC.

Continue reading →

Joining an Ubuntu Machine to Samba with Winbind

8 Replies

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.

Continue reading →

Installing a Mailserver on Ubuntu 14.04 LTS Part 2

8 Replies

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.

Continue reading →

Installing a Mailserver on Ubuntu 14.04 LTS Part 1

26 Replies

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.

Continue reading →

Administering AD DC via Windows

5 Replies

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.

Continue reading →

Samba4 AD DC on Ubuntu 14.04

40 Replies

Samba 4 is a good bit of software. If only that last few tweaks could be done to finish it and the documentation off it would be great software. I have found lot of ways to set up Samba4 as a AD DC most of which fail to work only this one series of steps worked. Samba4 configuration is really really flaky! The official Samba documentation is getting better and beginning to cover some of the configuration pitfalls.

For this how to we are building on some of my other howtos.

Continue reading →