Articles That Might Interest:

Network Fundamentals

LAN Network Topologies

Network topologies can take a bit of time to understand when you're all new to this kind of cool stuff, but it's very important to fully understand them as they are key elements to understanding and…

Web Application Vulnerability Scanners

What is OWASP? Open Web Application Security Pro…

With nearly every business sector relying on the internet and digital tools to function, it is no surprise that cybersecurity is the second-fastest growing industry. Hackers don’t care how large or s…

Cisco Routers

Cisco Router PPP Multilink Setup and Configuration

This article provides an in-depth explanation of PPP Multilink and shows how to configure a Cisco router to use PPP Multilink between two serial interfaces (WIC-1T). We'll show you the commands that…

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…

Cisco Services & Technologies

WEB SSL VPN - The Next Wave Of Secure VPN Services

Fifteen years ago Virtual Private Networks (VPN) access was a fairly new concept to most businesses. While large corporations already had a good head-start with VPN technologies, the rest were starti…

Cisco Switches

Installation and Setup of Cisco SG500-52P - 500 S…

The SG500 series Cisco switches are the next step up from the already popular SG300 Layer-3 switches. Cisco introduced the SG Small Business series switches to compete against DELL’s and HP’s offerin…

Network Fundamentals

Network Data Transmission

Network data transmission refers to the process of sending and receiving information between two or more devices connected to a network. It is a critical aspect of modern-day networking, and it enabl…

Windows Servers

Troubleshooting Windows Server 2012 R2 Crashes. A…

There are umpteen reasons why your Windows Server 2012 R2 decides to present you with a Blue Screen of Death (BSOD) or the stop screen. As virtual machines become more prominent in enterprise environ…

Domain Name System (DNS)

The DNS Protocol - Part 4: DNS Response Message F…

The previous article covered the DNS Query message formats. In the article we analysed them in great detail and showed how various options are selected by the host using the Flags/Parameters field.&n…

TCP - UDP Protocol Analysis

TCP Header Anaylsis - Section 3: TCP Header Lengt…

The third field under close examination is the TCP Header length. There really isn't that much to say about the Header length other than to explain what it represents and how to interpret its values…

Cisco Switches

Cisco Catalyst 4500 Series Zero-Downtime IOS Upgr…

The Supervisor Engine is the heart of the Cisco Catalyst 4500 and 6500 series switches. It is the equivalent of an engine in a car. Every packet that enters or exits your switch passes through the Su…

Windows Servers

Windows 2012 Server NIC Teaming – Load Balancing/…

NIC Teaming, also known as Windows Load Balancing or Failover (LBFO), is an extremely useful feature supported by Windows Server 2012 that allows the aggregation of multiple network interface cards t…