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Web Application Vulnerability Scanners
This article explains what a web browser cookie is and examines how Cross Site Request Forgery work by allowing hackers to intercept and access web browser cookies from unaware users trying to l…
Routing
We are going to analyse what happens when routing occurs on a network (IP routing process). When I was new to the networking area, I thought that all you needed was the IP Address of the machine you…
Cisco CallManager-CCME
This article introduces basic CallManager Express (CCME) concepts by covering how a CCME router operates, how calls are setup between Cisco IP phones but also the role of a CCME router in this proces…
Linux - Unix
Since this document merely scratches the surface when it comes to Linux, you will probably find you have lots of questions and possibly problems. Whether these are problems with the operating system…
Windows Servers
With the release of Hyper-V vNext just around the corner, Altaro has organized a Free webinar that will take you right into the new Hyper-V vNext release. Microsoft Hyper-V MVP, Aidan Finn and Micros…
Cisco Wireless
This article covers the deployment of the Cisco WLC 9800-CL cloud-based controller on the VMware ESXi platform. We explain the CPU, RAM and storage requirements, provide URLs to easily download and i…
Linux - Unix
This article was written thanks to our recent encounter of a HP DL120 G7 rack mount server equipped with a HP Smart Array B110i SATA Raid controller, needed to be installed with the Linux CentOS 6.0…
Windows Servers
Network Location Awareness (NLA) is a feature offered on Windows Server 2012 R2 and all Windows workstation editions from Windows 8.1 and above, including Windows 10. When connecting to a network (LA…
Network Fundamentals
Unicast is a communication method used in computer networking where data is sent from a single sender to a specific destination device. In this method, the sender sends the data packet to a uni…
Ethernet Protocol, CSMA/CD, Collisions
Late collisions, on the other hand, are not normal and are usually the result of out of spec. cabling or a malfunctioning adapter. A late collision is defined as any collision that occurs after 512 b…
Cisco Routers
This article serves as an extension to our popular Cisco VPN topics covered here on Firewall.cx. While we’ve covered Site to Site IPSec VPN Tunnel Between Cisco Routers (using static public IP addres…
Cisco Services & Technologies
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…

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