Using a Raspberry PI as a Router and Wifi hotspot with a firewall for your internal LAN or household network is now possible. The Wifi hotspot can function as a hotspot for guests. This can be more secure then the cheap nasty routers supplied by your ISP with hard coded passwords.
I wanted to create a test networking lab Ubuntu on 18.04 to try out configurations without having to hack my real LAN about. I decided to use VirtualBox virtual machines as the software is freely available and works with Linux very nicely. For the network in the test networking lab Ubuntu on 18.04 we will need to separate from our own normal LAN. VirtualBox provides this in of the box. We simply set the network interfaces to use “Internal Network”. This way any gust VMs on the host within the internal network can only see each other.
Welcome to Mail Server on Ubuntu 18.04 Part 1. This is the first part of a series of blog posts. It will use Postfix, dovecot and amavis. Setting up a mail server is a complex project it is one of the most difficult and complex servers to setup. There are many different tools/packages that have to come together before it is working. There are many more packages that can be installed before you have something that is usable in the real world with all the hackers and spammers around.
*Do not follow this blog post on a production server unless you are [crazy|dumb|mad|nutz|stupid] and want to be unemployed!
This post will, quickly, run through how to create an Ubuntu 18.04 Minimal Server Install. It also only takes a short time, taking between 5 to 15 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 build these test machines as virtual machines running on Virtualbox as this allows me to throw it away without messing about with real hardware.
Installing Munin on Ubuntu 16.04 is not the hard. Munin is a monitoring system that runs over the network for the local server and remote servers. It monitors all the basics out of the box. We can use it to monitor servers of all types to see what has happened and help find out why stuff broke or started to go slow.
If you want to see loads of stats for your web site try Installing AWstats on Ubuntu 16.04 LTS. Number of visitor, Waht OS or Browser they used.
Installing AWstats on Ubuntu 16.04 LTS and some additional packages necessary for the geo and net IP location stats.
sudo apt-get install awstats libgeo-ipfree-perl libnet-ip-perl
I am constantly installing Ubuntu with various configurations. I find having a local Ubuntu 16.04 Mirror on a Synology Diskstation speeds up the installation and updates, making the time spent setting it up well worth while.
Backup your diskstation before doing anything else, just in case.
I wanted to create a test networking lab Ubuntu on 16.04 for trying out configurations without having to hack my real LAN about. I decided to use VirtualBox virtual machines as they are freely available and work with Linux and you can also use MS Windows guests. The network in the test networking lab Ubuntu on 16.04 will need to separate from our own normal LAN. VirtualBox provides this out of the box. We simply set the network interfaces to us “Internal Network”. This way only VM’s on the host can see each other.
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.
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.