If, like me, you’ve come from a traditional sysadmin background then Kubernetes can be daunting to say the least, this doesn’t get much easier when it comes to trying to get to grips with how to debug networking issues. Kubernetes networking is VAST and supports a number of complex implementations that vary between the major Kubernetes-as-a-Service platforms (GKE, EKS, AKS) as well as many other options. The broad strokes are . . .
Recently I had an requirement that I couldn’t find documented outside of the abstract; migrating a single private DNS zone to AWS’ hosted DNS service; Route 53 and conditionally forwarding queries for that zone from an existing Windows DNS infrastructure. This isn’t something I expected to be broken down blow by blow in the AWS documentation but there are plenty of Windows DNS infrastructures out there in the wild and . . .
Recently I was presented with a very common problem, offer up a service which uses an unprivileged port, present that service through a reverse proxy and keep the entire service secure by completing TLS termination on the proxy. This is a pretty old problem and in my case the service is Hashicorp Vault, but what’s odd is that for such a popular platform I couldn’t find any guides or configuration . . .
The creation of an Azure Site to Site VPN is (even by Software Defined Networking standards)…involved. This isn’t a problem unique to Azure and isn’t aided by the desire by vendors to call all of their components something unusual rather than the terminology that already exists. Setup is a very manual and time consuming process, however Terraform can completely automate and codify the process. Example code for this post can . . .
In previous posts I’ve looked at the setup of AlienVault OSSIM and managing logs from both Windows and Linux Operating Systems. However as any admin knows dealing with servers is only half the battle when it comes to logs, network devices are arguably the most important part. In this post we’ll be looking at log management for Juniper JUNOS, Cisco IOS and VMWare EXSi devices in particular, all of which . . .
Secure Shell might be the greatest component of Linux and the best gem to come from the Open Source community, enabling countless systems to connect to one-another and allowing the secure communication of systems both manually and programmatically with very little complexity, yet despite this people still appear to struggle with it, especially admins from a Windows background. Keys Vs Passwords There’s a significant downside to using a username and . . .
This project came from the back of my desire to learn more about public key certificates ahead of deploying a two tier PKI for an enterprise network, ahead of this I thought it would be prudent to try something a little smaller scale and see how the nuts and bolts worked and try and deploy a simple single tier PKI at home and see how it could be leveraged. Cryptography . . .
After seeing this configuration deployed in enterprise I struggled to understand how it worked, so I picked up a UniFi AC-AP access point second hand and set around seeing how to do it using open source platforms. Knowing that this required a certificate authority to work and RADIUS I figured I could eventually get it to work, but having never used RADIUS it wasn’t without it’s pain, but eventually I . . .
Once upon a time I used to rely on nothing but a Secure Shell for access to my internal network, however this became more and more impractical the more things I stood up on the network and the more things I needed access to from my phone the less time I spent carrying a laptop with me. Given my long time favouritism for OpenVPN and how much the platform had . . .
Update: The host mentioned in this infrastructure has since been replaced with another the upgrade process is covered here. My personal infrastructure has gone through a number of iterations. Starting as a 450mhz Pentium 3 Ubuntu 7.04 server running SMB on a single 5400 RPM IDE disk cobbled together through a BT home hub and some cheap megabit switches, it later became an Ubuntu 14.06 host on a laptop with . . .