Articles That Might Interest:

Network Cabling

Direct Cable Connection

From the early PC days, Direct Cable Connection (DCC) was the most popular way to transfer data from one PC to another. Of course, it might seem a bit of an "old fashioned" way to transfer data these…

Cisco Routers

Introduction To Routers

Welcome to the Routers section. Here we will analyse routers quite some depth; what they do and how they work. We must point out that knowlege on the OSI model is recommended, plus understanding of h…

Cisco Wireless

Cisco WLC Interfaces, Ports & Their Functionality…

Our previous article introduced Cisco’s popular Wireless ControllerCisco’s popular Wireless Controller (WLC) devices and examined their benefits to enterprise networks, different models offered and f…

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

Installing The ‘Unsupported’ Profilic USB-to-Seri…

Thanks to the absence of dedicated serial ports on today’s laptops and ultrabooks, USB-to-Serial adapters are very popular amongst Cisco engineers as they are used to perform the initial configuratio…

TCP - UDP Protocol Analysis

TCP Header Anaylsis - Section 4: TCP Flag Options

As we have seen in the previous pages, some TCP segments carry data while others are simple acknowledgements for previously received data. The popular 3-way handshake utilises the SYNs and ACKs avail…

Windows Servers

Deploying Active Directory & DNS Services on Wind…

This article provides a comprehensive guide to deploying Active Directory and DNS Services on Windows Server 2022, encompassing the Essential, Standard, and Datacenter editions. Our guide also includ…

Cisco Routers

How to Restrict Cisco IOS Router VPN Client to La…

In our article Cisco VPN Client Configuration - Setup for IOS Router we explained how to setup up a Cisco IOS router to support Cisco IPSec VPN clients, allowing remote users to securely connec…

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

How to Start Windows 8 and 8.1 in Safe Mode – Ena…

This article will show you how to start Windows 8 and Windows 8.1 in Safe Mode and how to enable F8 Safe Mode. Previous Windows O/S users would recall that by pressing and holding the F8 key while Wi…

Subnetting

IP Subnet Calculator

This free online Subnet Calculator provides a fast and easy way to calculate all aspects of any IP Address and Subnet Mask. Simply enter your desired IP Address and Subnet Mask below and press Calc…

Cisco Wireless

Understanding, Configuring & Tweaking Web-based C…

Cisco Aironet Access Points, just like most Cisco devices, provide a web interface from which we are able to configure the device. It is often we are presented with a number of options and settings…

Cisco CallManager-CCME

Cisco Unity Express Installation & Setup - ISM-SR…

Unity Express is a popular add-on for Cisco Unified Communication Manager Express (CallManager Express) and Cisco Unified Communication Manager (CUCM), adding advanced auto attendant functionality wi…

Cisco Routers

Cisco GRE and IPSec - GRE over IPSec - Selecting…

GRE Tunnels are very common amongst VPN implementations thanks to their simplicity and ease of configuration. With broadcasting and multicasting support, as opposed to pure IPSec VPNs, they tend to b…