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Windows XP OpenVPN TAP installation, "devcon.exe failed"

Recently I had to install OpenVPN on a system running Windows XP (Don't ask). The installation went smoothly up until TAP driver installation and then suddenly things went haywire...

How to Fully Uninstall Kaspersky's NDIS Filter

I like Kaspersky anti-virus, and I use it regularly… (Not on my own PC mind you, but on the clients) While I do believe they provide the best anti-virus in the market, I am not a fan of most of their other products. That goes for the Firewall, Safe Browsing, SSL Hijacking, and of course their newest addition, Secure Connection…

OpenDKIM-OpenDMARC and a Chrooted Postfix Instance

Compatibility issues arises when using OpenDKIM/OpenDMARC Unix sockets with chrooted Postfix installation. In this post you will learn to resolve this...

The Tale of Windows UAC and Incompetent Programmers

In this post i will give you a brief history of UAC, an overall overview, and how programmers abuse the system. I also talk about different ways to manipulate an applications manifest to turn on UAC virtualization, and much more...

Remote unlocking of LUKS-encrypted root in Ubuntu/Debian

Not so long ago, remote unlocking of a LUKS-encrypted root partition was difficult to setup. While essential for headless servers, all required steps needed to be done manually and compatibility was a concern. Luckily, it is much simpler to do so in recent versions of Ubuntu/Debian. Unlocking an encrypted root remotely *should* be as simple as installing a single package... We'll see about that in a moment.

OpenVPN TAP adapter MTU in Windows

Recently I was in need of setting up some windows clients to connect to my OpenVPN server. This server running on Linux, uses a specific MTU value (let’s say 1400) to ensure maximum compatibility with different clients over different links.

Optimizing OpenVPN Throughput

In the previous post, I talked about OpenVPN TCP and UDP tunnels and why you should not be using TCP. In this post, I’m going to talk about optimizing the said tunnels to get the most out of them.

OpenVPN - TCP or UDP tunneling?

Spoiler alert: You most likely would want to use UDP tunneling! An OpenVPN tunnel runs over IP and can encapsulates VPN traffic into either a UDP or a TCP connection. To understand the pros and cons of each, we first need to have an understanding of them both.

WD Green HDDs and excessive interrupts

Green as it’s cool, green as it’s quite, just like the trees. You’d think it’s all good and perfect. It’s also supposed to consume way less power. Yay, greener planet… Except…