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Network

Migrate a netadapter configuration in an atomic command

Migrate a netadapter configuration in an atomic command

You know the situation: You need to perform multiple commands that will disconnect you in the middle. Functions to the rescue!

Daniel Nachtrub
Daniel Nachtrub
Network
Linux kernel keyrings, container isolation and maybe some kerberos

Linux kernel keyrings, container isolation and maybe some kerberos

On a recent project I've been stumbling on the case that kerberos tickets have been inadvertently shared across containers on a node - which obviously caught my attention as I'm not keen on sharing such secrets across workloads. This post describes why this happens and what to do to prevent this.

Daniel Nachtrub
Daniel Nachtrub
Kubernetes
openvpn 2.6.0 released

openvpn 2.6.0 released

The new openvpn 2.6.0 has some very nice and shiny features you might want to starting using soon. This post highlights some of them.

Daniel Nachtrub
Daniel Nachtrub
Linux
Create a TPM backed certificate request (on windows)

Create a TPM backed certificate request (on windows)

Certificates are everywhere - sometimes you want to keep them even more secure than just on the filesystem (or operating system store). This guide shows how to create TPM backed certificates on windows.

Daniel Nachtrub
Daniel Nachtrub
Windows
Windows 11 22H2 - stuck RDP session establishment when using UDP transport

Windows 11 22H2 - stuck RDP session establishment when using UDP transport

Windows 11 22H2 currently has an issue when connecting using the Remote Desktop gateway or Remote Desktop Connection Broker. This article gives some information and possible workarounds.

Daniel Nachtrub
Daniel Nachtrub
Windows
XDP for Windows - and it's open source

XDP for Windows - and it's open source

XDP (eXpress Data Path) is a high performance, programmable network data path and Microsoft is working on an implementation for Windows.

Daniel Nachtrub
Daniel Nachtrub
Windows
openvpn data channel offload

openvpn data channel offload

openvpn is working on offloading the data channel to kernel space. This is improving throughput by an order of magnitude according tests.

Daniel Nachtrub
Daniel Nachtrub
Network
freebsd 12.3 / pfsense 2.6 on hyper-v with low throughput

freebsd 12.3 / pfsense 2.6 on hyper-v with low throughput

Upgrading pfsense running on hyper-v to version 2.6 might result in a massive performance regression when the VMSwitch has RSC enabled.

Daniel Nachtrub
Daniel Nachtrub
Linux