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VPN Services & Guides

VPN For Torrenting, P2P and File Sharing. Test An…

The word torrenting is often viewed as synonymous with pirating. It’s seen as a shady and illegal practice, used to con hard working artists out of their money. As a result, internet service provider…

Cisco Routers

Configuring Static Route Tracking using IP SLA (…

In today's network environment, redundancy is one of the most important aspects, whether its on the LAN side or on the WAN side. In this topic we will be covering WAN redundancy with multiple WAN lin…

Cisco Services & Technologies

Dynamic Multipoint VPN (DMVPN) Deployment Models…

Following our successful article Understanding Cisco Dynamic Multipoint VPN - DMVPN, mGRE, NHRP, which serves as a brief introduction to the DMVPN concept and technologies used to achieve the flexibi…

Network Fundamentals

DoS & DDoS Attacks

A Denial of Service (DoS) attack is a malicious attempt to disrupt the normal functioning of a website, server or network by flooding it with traffic or overloading its resources. The aim of such an…

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

Configuring Windows 7 To Provide Secure Wireless…

Not many people are aware that Windows 7 has built-in capabilities that allow it to be transformed into a perfectly working access point so that wireless clients such as laptops, smartphones and othe…

Virtualization & VM Backup

The Backup Bible. A Free Complete Guide to Disast…

The Free Backup Bible Complete Edition written by backup expert and Microsoft MVP Eric Siron, is comprised of 200+ pages of actionable content divided into 3 core parts, including 11 customizable tem…

Windows Servers

Installation and Configuration of Fine-Grained Pa…

Microsoft introduced Fine-Grained Password Policy for the first time in Windows Server 2008 and the policy has been part of every Windows Server since then. Fine-Grained Password Policy allows overco…

Windows Servers

Windows 2012 Server Foundation, Essential, Standa…

FREE Hyper-V & VMware Virtualization Backup: FREE for Firewall.cx readers for a Limited Time! Download Now! Windows Server 2012 Editions On the 1st of August, 2012 Microsoft releas…

VLAN Networks

Static VLANs

VLANs are usually created by the network administrator, assigning each port of every switch to a VLAN. Depending on the network infrastructure and security policies, the assignment of VLANs can be im…

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…

Web Application Vulnerability Scanners

Free Web Application Vulnerability Report (2019)…

Acunetix has just released their annual Web Application Vulnerability report which aims to provide security professionals, web application developers, system administrators, web server administrators…

Network Address Translation - NAT

Network Address Translation (NAT) Overload - Part…

In our previous article, Network Address Translation (NAT) Overload - Part 1, we explained what NAT Overload is and how it works. This page deals with the analysis of the packets that traverse a NAT…