ICMP stands for Internet Control Message Protocol.It is defined as part of the IP protocol suite and operates at the network layer. Important distinction: ICMP does not transport application data.It transports control and error reporting… Understanding ICMP: The Control Protocol Behind IP Networks
Installing OPNsense on 10-Gbit firewall hardware with an external DHCP server OPNsense is a FreeBSD-based firewall and routing platform aimed at professional and semi-professional network environments. This article describes a clean bare-metal installation of OPNsense… Firewall OPNSense
Why I Chose WireGuard VPN and Why It Actually Makes Sense Since I work remotely I needed a solution so that I could use my Belgian IP address to identify myself towards the VPN of… WireGuard VPN
When you want to understand how fast your local network really is, internet speed tests are almost useless. They measure the connection to the outside world, not the performance between your own machines. To get… Measuring Real LAN Transfer Speed With a Self Hosted LibreSpeed Server
Instead of buying a standard router, I decided to build my own DHCP service from scratch so that every network function runs on its own dedicated machine. It was both a technical challenge and an… Kea DHCP4 Server on Debian 11 (Bullseye)
In complex automation systems, problems rarely announce themselves clearly. A value arrives too late. A subscription behaves differently than expected. A client reconnects more often than it should. At that point logs are often not… Wireshark as a microscope for OPC UA communication