Understanding NFSv4 Identity Mapping in NetApp ONTAP (AUTH_SYS and File Ownership Under the Hood)
NFSv4 introduced significant changes compared with NFSv3, including how file and directory ownership is represented between NFS servers and clients….
Passwordless Authentication in Linux – Part 3 – Certificate-Based and FIDO2 Authentication
After exploring certificate-based authentication and Passkeys on FIDO2 for Windows in Part 1 and Part 2, this third part takes…
Understanding Windows-to-UNIX User Mapping with UNIX Security Style in NetApp ONTAP
When Windows users access data stored on a NetApp ONTAP volume using UNIX security style, ONTAP must translate the Windows…
Understanding NFS AUTH_SYS User Mapping with NTFS Security Style in NetApp ONTAP
When NFS clients access data on a NetApp ONTAP volume using NTFS security style, ONTAP cannot simply evaluate the UNIX…
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…
How to Shrink a Linux VMware vSphere Virtual Disk (VMDK) and Its Associated Logical Volume
Allocating additional storage to a virtual machine in VMware vSphere is straightforward, you simply increase the size of the virtual…
Linux Cheat Sheet for essential Commands
Linux is a versatile operating system, packed with powerful tools and commands to streamline tasks, troubleshoot issues, and manage systems…
How to install Root Certificates on Linux
In this post, I will walk you through the process of installing root certificates on Linux. From placing the certificate…
What’s the Difference in Linux between the Commands SU – vs. SU without the Dash
The difference between su – and su in Linux is primarily related to how they handle the user environment after…
