A while back I wrote a post on routing all traffic through a VPN under Linux. The solution discussed in that post is fine if you are only dealing with regular applications but when you are dealing with containers the world is a difference place. Docker networks are, or at least can be, complicated. By …
I’ve recently been setting up a machine that has to send all data over a VPN which feels like it should be really simple but has actually turned out to be tougher than I expected. I thought I could set it up by using routing and I think it’s probably possible but way more hassle …
I’ve just set up a new BIND DNS server for a new network. I configured the network in a way I’ve not done before which was to have the servers on a different subnet to the regular machines and other devices. I prefer this set up but it has resulted in me having to do …
In part 5 I talked about auto-starting KVM guest machines and setting up a console that could be accessed through virsh. In this section I’ll cover accessing the guest using VNC.
In part 3 of this series about installing KVM on Ubuntu 14.04 I installed and configured KVM. In this part I’ll be installing a guest.
In part 2 of this series about installing KVM on Ubuntu 14.04 I configured the network. In this part I’ll be installing and configuring KVM.
In part 1 of the series I covered basic machine set up and preparation. In this second part of the series about setting up KVM on Ubuntu 14.04 I cover setting up the network. Setting up the network can seem quite daunting but a basic KVM install doesn’t actually require much network set up.
As I mentioned in the previous article Understanding Bridges, Linux and most other operating systems have the ability to create virtual interfaces which are usually called TUN/TAP devices. This article will discuss those devices with particular focus on how they are used in OpenStack.
In this article I’ll discuss network bridges and where they are commonly used (spoiler: they aren’t any more). Mainly though I want to discuss how bridges are used in an OpenStack set up as building a personal cloud is my final aim. Hardware network bridges aren’t as common as they once were as switches have …
The aim of this article is to explain VLANs to someone who has a reasonable understand of how a computer network works. Recently I’ve been reading up on OpenStack as I’d like to put together a small personal cloud for a project I’m working on. So far so easy but the one aspect that I’ve been …