Having good knowledge of the Linux file system and file structure is crucial for Linux administrators. Not only for knowing the program’s executable file’s location but for documentation. This post explains how the Linux file system organizes files and directories. A Brief of File system definition Linux system requires an organization method to store all […]
STP Features In this section we will discuss on different improvement which added to the Rapid spanning-tree. In particular we talk about: Convergence Optimization Edge Port STP Filters BPDU Filter BPDU Guard Root Guard Unidirectional Link Detection Loop Guard Bridge Assurance Convergence Optimization Spanning-Tree Edge Port This is equivalent of PortFast feature with Common Spanning-Tree. […]
Every VMware production’s implementation has two steps firstly, installation, and secondly, configuration. In the previous post, we explained how to install an ESXi host. We will do basic configuration in this post, such as setting the ESXi management IP address. Primary Management Console After the ESXi installation completes, as shown in the image below, you […]
One of the relatively old techniques for executing code, or Code Execution, is the Squiblydoo technique, with which we can run a Code Execution attack and execute our malicious code. MITRE ATT&CK ID: T1218.010 Sub-technique of: T1218 Tactic: Defense Evasion Platforms: Windows Squiblydoo technique is also known by other titles, including Regsvr32 Code Execution, and […]
Audiences: Candidates who want to prepare for CCIE Data Center (v3.0) Introduction to NX-OS Command Line In this section, we assume that you know how to connect to a NX-OS CLI via a terminal emulator program. Here is how we bootstrap our Nexus switch for the first time. If you skip Power On Auto Provisioning, […]
In this post I will talk about how to send Sysmon to Splunk. One of the most popular security products is Splunk, which is mainly used to identify threats and analyze events. In this part of the Sysmon 101 course, we will talk about how to send a Sysmon log to Splunk. Send Sysmon Log […]
A Brief Introduction to MST IEEE 802.1s originally started as Cisco’s Multiple Instances Spanning Tree Protocol (MISTP). Remember that RapidPVST+ each VLAN is mapped to a single spanning tree instance. When you have 200 VLANs, it means there are 200 instances of spanning tree. This requires a lot of CPU power and memory. You can […]
A Brief Evolution of Spanning-Tree Protocols on NX-OS Before discussing on IEEE 802.1w, I would want to present a brief history of Spanning-tree evolution, the we continue with our main subject of this post. Spanning-tree is the loop prevention mechanism in Layer-2. According to graph theory: Spanning: A spanning graph is a subgraph obtained by […]
In previous post we talked about windows server 2022, features and the hardware requirements. Now we are going to talk about the installation of windows server 2022 step by step. At first we should know about the hardware requirements. Lets dive in! Windows Server 2022 Hardware Requirements Before we start installing windows server 2022, we […]
In this article you will learn about: What is Windows server? Windows server history? Windows server 2022 Different Editions of Windows Server 2022 Windows Server 2022 New Features Windows Server 2022 Hardware Requirements     Let’s go! What is windows server?  Microsoft windows server OS (operating system) is a group of enterprise server operating systems […]
Elissa Garlin
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