Articles That Might Interest:

Web Application Vulnerability Scanners

Acunetix Online: Run a Free Scan for Network and…

Acunetix has refreshed its online web and network vulnerability scanner, Acunetix Online, with a massive update. The new Acunetix Online now incorporates all the features found in its on premise offe…

Netflow

NetFlow Analyzer: Free Download, Step-by-Step Ins…

In our previous article we explained how a Netflow Analyzer can help you gain visibility into your user traffic, application traffic and data flows while at the same time analyze traffic patterns, de…

The OSI Model

The OSI Model: Layer 2 - Datalink Layer

The Datalink ensures that messages are delivered to the proper device and translates messages from the Network layer into bits for the Physical layer to transmit. It formats the message into data fra…

Ethernet Protocol, CSMA/CD, Collisions

Ethernet Troubleshooting - Physical Frame Corrupt…

When troubleshooting your Ethernet network, the first thing to look for is physical frame corruption. In this essay, we will discuss the different causes of physical frame corruption and the characte…

Windows Servers

Windows Server 2016 Licensing Made Easy – Underst…

This article describes the new Windows Server 2016 Licensing model (per-core licensing) Microsoft has implemented for its new server-based operating system. While the Windows Server 2012 Licensing mo…

TCP - UDP Protocol Analysis

Transmission Control Protocol - Part 2: Quick Ove…

As previously mentioned on a number of occasions, TCP is one of the two protocols that lives at the Transport layer and is used to carry data from one host to another. What makes TCP so popular is th…

Network Cabling

CAT5, CAT5e, CAT6 UTP X-Over / Cross-over Cable

The cross-over (or crossover) CAT5 UTP cable has to be one of the most used cables after the classic straight-thru cable. The cross-over cable allows us to connect two computers without needing a hub…

VPN Services & Guides

DNS Leak Testing & Protection – How to Avoid Expo…

Despite innovations in security and technology, it’s difficult to remain anonymous online. Identifying information is seemingly everywhere – from malicious JavaScript tracking to the location service…

Cisco Switches

Cisco 4507R+E Layer 3 Installation: Redundant WS-…

It's no news that we here at Firewall.cx enjoy writing about our installations of Cisco equipment and especially devices that we don’t get to see and play with every day. Today we cover the installat…

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…

Cisco Wireless

Cisco Wireless Controllers (WLC) Datasheets Avail…

We would like to inform our readers that Firewall.cx has just made available as a free download all of Cisco's Wireless Controller Datasheets. The datasheets provide valuable infomation for all curr…

SASE & SD-WAN Networks

The Most Common Worst Networking Practices and Ho…

In the rush to keep pace with the many challenges facing today’s organizations, all too often networking teams end up adopting practices and processes that are, shall we say, less than perfect. You p…