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Subnetting

IP Subnetting - Part 1: The Basic Concepts

When we subnet a network, we basically split it into smaller networks. For example, when a set of IP Addresses is given to a company, e.g 254 they might want to "break" (the correct term is "partitio…

The OSI Model

The OSI Model: Layer 1 - Physical Layer

The Physical layer has two responsibilities: it sends bits and receives bits. Bits come only in values of 1 or 0. The Physical layer communicates directly with the various types of actual communicati…

Domain Name System (DNS)

The DNS Protocol - Part 1: Introduction

If you ever wondered where DNS came from, this is your chance to find out ! The quick summary on DNS's history will also help you understand why DNS servers are run mostly on Linux and Unix-type syst…

SASE & SD-WAN Networks

MPLS vs. SD-WAN vs. Internet vs. Cloud Network. C…

The Wide Area Network (WAN) is the backbone of the business. It ties together the remote locations, headquarters and data centers into an integrated network. Yet, the role of the WAN has evolved in r…

Cisco Firewalls

Upgrading - Uploading AnyConnect Secure Mobility…

This article will show how to download and upload the newer AnyConnect 4.x VPN clients to your Cisco ASA Firewall appliance (5500 & 5500-X Series) and configure WebVPN so that the newer AnyConnec…

Cisco Routers

How To Configure Router On A Stick - 802.1q Trunk…

Router-on-a-stick is a term frequently used to describe a setup up that consists of a router and switch connected using one Ethernet link configured as an 802.1q trunk link. In this setup, the switch…

OpManager - Network Monitoring & Management

Preparing and Managing your Network for the Remot…

Times have changed now and HOME is the new office. Now, everyone works at their comfort and in fact online all throught the day and night. This mandates the IT infrastructure to be up and running 24/…

Windows Servers

How to Install Desktop Icons (Computer, User’s Fi…

One of the first things IT Administrators and IT Managers notice after a fresh installation of Windows 2012 Server is that there are no Desktop Icons apart from the Recycle Bin. Desktop icons such as…

VLAN Networks

VLAN Security - Making the Most of VLANs

It's easy to see why virtual LANs have become extremely popular on networks of all sizes. In practical terms, multiple VLANs are pretty much the same as having multiple separate physical networks wit…

Windows Workstations (XP, 7, 8, 10, 11)

How to View Hidden Files and Folders In Windows 8…

Windows 8 & 8.1 hides two types of files so that normally, you do not see them while exploring your computer. The first type is the files or folders with their 'H' attribute set to make them hidd…

Windows Servers

Configuring Local Group Policy for Windows 2003

Windows 2003 Group Policies allow the administrators to efficiently manage a group of people accessing a resource. Group policies can be used to control both the users and the computers. They give b…

Ethernet Protocol, CSMA/CD, Collisions

Differences Between Classic Ethernet And Fast Eth…

The two primary areas for concern when upgrading the network from 10Mbps to 100Mbps are cabling and hubs. As discussed on the Fast Ethernet Introduction page, in Fast Ethernet twisted pair cabling ne…