Mastering tcpdump in SUSE Linux Enterprise
tcpdump is a powerful command-line packet analyzer available on SUSE Linux Enterprise and many other Linux distributions. It allows you…
Windows Server Software Defined Networking (SDN) and Hyper-V Network Virtualization (HNV) – Part 4: Testing HNV Isolation with Overlapping Tenant Networks
In Part 3 of this series, we extended our HNV environment beyond the isolated tenant network and provided external connectivity…
Windows Server Software Defined Networking (SDN) and Hyper-V Network Virtualization (HNV) – Part 3: Providing External HNV Connectivity with the Native SDN Gateway and pfSense
In Part 2 of this series, we connected a second tenant VM to our HNV virtual network and verified communication…
Windows Server Software Defined Networking (SDN) and Hyper-V Network Virtualization (HNV) – Part 2: Testing Cross-Host HNV Connectivity
In Part 1 of this series, we deployed the fundamental Windows Server Software Defined Networking (SDN) infrastructure, including the Network…
Windows Server Software Defined Networking (SDN) and Hyper-V Network Virtualization (HNV) – Part 1: Deploying the SDN Infrastructure
Windows Server Software Defined Networking (SDN) provides a software-defined networking architecture for centrally configuring and managing virtual and physical network…
Understanding ICMP Redirects – Why Your Network Traffic Suddenly Takes a Different Route
When a host needs to communicate with a destination outside its local subnet, it normally forwards the packet to its…
Understanding Remote Procedure Calls (RPC) on Linux – Building an ONC RPC Client and Server and Analyzing the Network Traffic
In my previous article, we explored Microsoft’s implementation of Distributed Computing Environment / Remote Procedure Call (DCE/RPC) by building a…
Understanding Remote Procedure Calls (RPC) on Windows – Building a Simple Client and Server and Analyzing the Network Traffic
Remote Procedure Call (RPC) is a general communication paradigm used by many operating systems and distributed systems, including Windows, Linux,…
Mastering Netplan: Modern Network Configuration on Ubuntu
Modern Ubuntu Server releases (17.10 and later) use Netplan as the default network configuration system. Instead of editing /etc/network/interfaces, the…
Mastering Packet Monitor (Pktmon) on Windows
For years, troubleshooting network traffic on Windows servers often meant installing third-party tools like Wireshark or Npcap directly on production…
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