Articles That Might Interest:

Linux - Unix

The Linux File System

A file system is nothing more than the way the computer stores and retrieves all your files. These files include your documents, programs, help files, games, music etc. In the Windows world we have t…

Virtualization & VM Backup

How to Fix VMware ESXi Virtual Machine 'Invalid S…

In this article, we'll show you how to deal with VMs which are reported to have an Invalid Status as shown in the screenshot below. This is a common problem many VMware and System Administr…

Cisco CallManager-CCME

Unity Express License Setup & Installation - Soft…

Unity Express provides any organization with a quick and convenient way to manage voicemail, auto attendant and interactive voice response (IVR) services. These services are provided within the…

Cisco Services & Technologies

Install & Fix Cisco VPN Client on Windows 10 (32…

This article shows to how correctly install Cisco VPN Client (32 & 64 bit) on Windows 10 (32 & 64 bit) using simple steps, overcome the ‘This app can’t run on this PC’ installation error, plu…

Network Cabling

Serial Direct Cable Connection, DB9, DB25, COM Po…

This article covers the popular serial ports on workstations, servers and laptop computers. We cover serial data transfer, port pinouts, port speeds, serial interface types (DB9 & DB25), null mod…

VLAN Networks

VLANs - IEEE 802.1q Trunk Link Protocol Analysis

While the VLAN Tagging article briefly covered the IEEE 802.1q protocol this article will continue building upon it by further analyzing the IEEE 802.1q Trunk Link Protocol. The IEEE 802.1q tagging m…

Linux - Unix

Linux BIND DNS - Part 5: Configure Secondary (Sla…

Setting up a Secondary (or Slave) DNS sever is much easier than you might think. All the hard work is done when you setup the Master DNS server by creating your database zone files and configuring th…

ICMP Protocol

ICMP Protocol - Part 5: Source Quench Message Ana…

The ICMP - Source Quench message is one that can be generated by either a gateway or host. You won't see any such message pop up on your workstation screen unless you're working on a gateway which wi…

ManageEngine Firewall Analyzer

Discover the Ultimate Firewall Management Tool: 7…

Firewall security management is a combination of monitoring, configuring, and managing your firewall to make sure it runs at its best to effectively ward off network security threats. In this article…

Ethernet Protocol, CSMA/CD, Collisions

Manchester Signal Encoding

The device driver software receives a frame of IP, IPX, NetBIOS, or other higher-layer protocol data. From this data, the device driver constructs a frame, with appropriate Ethernet header informatio…

SASE & SD-WAN Networks

SD-WAN is the Emerging, Evolving Solution for the…

A lot has changed in how people work during the past twenty years. Co-working spaces, mobility, and the cloud now are common. Businesses are spread out and branch offices are empowered. This new fun…

Network Cabling

1Gigabit 802.3ab -10GBase (10Gigabit) 802.3an Eth…

The 1000Base Ethernet standard, also referred to as Gigabit Ethernet (GbE or 1GigE) is defined by the IEEE 802.3-2008 standard and provides 10 times faster transfer speeds of 100Base Ethernet. Gigabi…