I will keep this short and sweet. We have servers in our environment that have multiple IP addresses assigned to a single NIC. That’s normally just fine. However on occasion I will have very strange issues occur where essentially all networking appears to be working and yet web browsing won’t work. I can ping my […]

Making use of a SAN (storage area network) provides some incredible benefits. I won’t go into depth but at a high-level you often get: 1. Excellent hardware redundancy for data storage, more-so if you are using multiple arrays but even most enterprise single arrays can provide N+1 redundancy. Now we can tolerate power failures, and […]

Currently I am working on integrating some 10Gbe switches into an existing 1Gbe network. Being completely new to 10 Gbe I wasn’t prepared for the volley of new terms, acronyms, and gotcha’s that were thrown my way. Initially I had a very hard time finding answers to some basic questions. So I figured I would […]

I have a limited number of IPv4 addresses available to me on my servers. So I am really frugal with how I assign them. Whenever possible, my preference is to use NAT off of the main Proxmox IP. However I struggled to get this setup while also using the built-in Proxmox firewall that comes in […]

On Thursday I released an article detailing how to get Proxmox setup and also how to configure networking with IPv6. However that article got long and I just said I would address the firewall in the future. Well, that’s today because I need to get the configuration stuff written down before I forget. In addition […]

After beating my head against the wall over the course of many hours I have finally figured out how to get Proxmox working quite well on my cheap KimSufi server… with IPv6. The goal of this article is to document (with varying levels of detail) how to go from a fresh KimSufi, OVH, or SoYouStart […]

Hyper-V Dynamic Memory Allocation strikes again… I have decided to no longer use Dynamic Memory Allocation on any of my virtual machines. It is a fine idea in theory but it is extremely buggy and I am not sure how it made it into a production OS… What’s the issue this time around? This is […]

If you don’t know what a firewall is, let’s start there… A firewall is basically a digital “wall” that sits on the edge of your network or device. When someone makes a connection over a network or the internet to your server, they connect by the IP address + a Port. Firewalls, on a very […]

This was going to be a long article but I decided to cut it short. Use case: You have a Remote Server – You need to securely access some sensitive service or another (let’s say a MySQL connection) and don’t want to open the port to up to the internet. What’s a person to do?

For one reason or another, there is quite a bit of confusion surrounding the technologies that allow File Sharing to take place on a Windows machine. The h Source: Windows File Sharing: Facing the Mystery Phenomenal article that clarifies Windows File sharing and sheds very clear light on which ports are needed based on what […]

Open VPN Access Server uses NAT (Network Address Translation) to “ease” routing VPN user traffic to the rest of a remote network. This isn’t always a desirable configuration. If you want to disable NAT globally, you can do so by logging into the shell as a root user on your OpenVPN Access Server and doing […]

If you are in a decently secure network your Active Directory domain controllers are “silo’d” off from all of your workstations and member servers. This is good, however, if your internal firewalls aren’t configured properly it can cause all kinds of headache for day-to-day domain operations. Update: You might also want to checkout this article […]

Sometimes you need to mirror files between a couple of different servers in your windows environment. There are a couple of command-line tools that can be used together to make this a very easy job. To further simplify things, especially if you need to mirror the same files/folders on a recurring basis, you can drop […]

I am just archiving this link for myself (and anyone else that needs this information) as well as the pertinent information therein. Basically if you run multiple OpenVPN servers in your environment you probably need your OpenVPN Connect Client to be able to handle multiple profiles. This isn’t enabled out of the box for the […]