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Windows Servers

Free Webinar: Scripting & Automation in Hyper-V w…

System Center Virtual Machine Manager (SCVMM) provides some great automation benefits for those organizations that can afford the hefty price tag. However, if SCVMM isn’t a cost effective solution fo…

TCP - UDP Protocol Analysis

TCP Header Anaylsis - Section 1: TCP Source & Des…

This section contains one of the most well-known fields in the TCP header, the Source and Destination port numbers. These fields are used to specify the application or services offered on local or re…

Web Application Vulnerability Scanners

Acunetix v13 Release Introduces Groundbreaking In…

The newest release of the Acunetix Web Vulnerability Scanner further improves performance and premieres best-of-breed technologies. Acunetix, the pioneer in automated web application security softwa…

Windows Servers

How to Install and Configure Windows 2012 DNS Ser…

Our previous article covered introduction to the Domain Name System (DNS) and explained the importance of the DNS Server role within the network infrastructure, especially when Active Directory is in…

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

How to Add and Remove Applications from Windows 8…

In this article, we'll show you how to add (pin) and remove (unpin) any application from the Windows 8 or Windows 8.1 Metro Start Screen. Tiles or the small squares and rectangles appearing on the Wi…

Spanning Tree Protocol (STP)

Spanning Tree Protocol – Part 2: Rapid STP Port C…

Spanning Tree Protocol, Rapid STP port costs and port states are an essential part of the STP algorithm that affect how STP decides to forward or block a port leading to the Root Bridge. In our prev…

TCP - UDP Protocol Analysis

TCP Header Anaylsis - Section 5: TCP Window Size…

Our fifth section contains some very interesting fields that are used by the TCP transport protocol. We see how TCP helps control how much data is transferred per segment, make sure there are no erro…

Network Cabling

LPT Ports & Modes (SPP, EPP, ECP) - Parallel Dire…

The Parallel Direct Connection is the second solution covering the transfer of data from one computer to another. The cable required is slightly more complicated as it has more wires that need to be…

Cisco Wireless

Configuring Cisco WLC Link Aggregation (LAG) with…

Cisco Wireless Controllers (WLC) support the configuration of Link Aggregation (IEEE 802.3ad - LAG) which bundles the controller ports into a single port channel. This helps simplify the configuratio…

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

How to View Hidden Files & Folders in Windows 7

This article shows you how to see hiddeen files and folders in Windows 7. Windows 7 hides important system files so that normally, you do not see them while exploring your computer. The reason behin…

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…

Cisco Services & Technologies

How to Fix Cisco VPN Client Error 51 – Unable to…

Apple Mac OS X users are frequently faced with the Cisco VPN Client Error 51 - Unable to Communicate with the VPN Subsystem as shown in the screenshot below: When this error is produced, users wil…