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VLAN Networks
Comparing Traditional Flat & VLAN Networks
Designing and building a network is not a simple job. VLANs are no exception to this rule, in fact they require a more sophisticated approach because of the variety of protocols used to maintain and…
Cisco Routers
Configuring Policy-Based Routing (PBR) with IP SL…
What is Policy-Based Routing?
Policy-Based Routing (PBR) is a very popular feature in Cisco routers, it allows the creation of policies that can selectively alter the path that packets take wi…
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…
Web Application Vulnerability Scanners
Web Application Security Best Practices that Help…
Successful web application attacks and the data breaches that are resulting from these attacks, have now become everyday news, with large corporations being hit constantly.
Our article covering majo…
SASE & SD-WAN Networks
SD-WAN is the Emerging, Evolving Solution for the…
A lot has changed in how people work during the past twenty years. Co-working spaces, mobility, and the cloud now are common. Businesses are spread out and branch offices are empowered.
This new fun…
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…
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…
ICMP Protocol
ICMP Protocol - Part 6: Redirect Messages
The ICMP - Redirect Message is always sent from a gateway to the host and the example below will illustrate when this is used.
Putting it simply (before we have a look at the example) the ICMP - Red…
Ethernet Protocol, CSMA/CD, Collisions
Manchester Signal Encoding
The device driver software receives a frame of IP, IPX, NetBIOS, or other higher-layer protocol data. From this data, the device driver constructs a frame, with appropriate Ethernet header informatio…
Web Application Vulnerability Scanners
Protecting Your Cookies from Cross Site Scripting…
Understanding XSS Vulnerability Attacks
This article aims to help you understand how Cross Site Scripting (XSS) attacks work. Cross Site Scripting or XSS can happen in many ways. For example, a…
Cisco Wireless
Easily Convert Cisco Autonomous - Standalone AP t…
This article explains how to convert a local or remote Autonomous / Standalone Cisco Aironet Access Point to Lightweight and register it to a Cisco WLC Controller. Included are detailed steps, comman…
Cisco Firewalls
Cisco ASA 5500-X Series Firewall with IPS, ASA CX…
The Cisco ASA Firewall 5500-X series has evolved from the previous ASA 5500 Firewall series, designed to protect mission critical corporate networks and data centers from today’s advanced security th…
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