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Windows Servers

How to Enable & Configure Shadow Copy for Shared…

When you shadow copy a disk volume, you are actually generating a snapshot of the changes made to the folders and files within the disk volume at a certain point in time. Windows 2012 R2 shadow copy…

Linux - Unix

The Linux File System

A file system is nothing more than the way the computer stores and retrieves all your files. These files include your documents, programs, help files, games, music etc. In the Windows world we have t…

Linux - Unix

Installing Software On Linux

Installing software in Linux is very different from Windows for one very simple reason: most Linux programs come in 'source code' form. This allows you to modify any program (if you're a programmer)…

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

How to View Hidden Files & Folders in Windows 7

This article shows you how to see hiddeen files and folders in Windows 7. Windows 7 hides important system files so that normally, you do not see them while exploring your computer. The reason behin…

Routing

Enhanced Interior Gateway Routing Protocol - EIGRP

Enhanced Interior Gateway Routing Protocol (EIGRP), similar to IGRP, is a Cisco proprietary routing protocol that is used to exchange routing information between different routers within a network. E…

Cisco CallManager-CCME

How To Upgrade Cisco - Linksys SPA8000 Firmware

The Cisco - Linksys SPA8000 is an 8-port IP Telephony Gateway that allows connections for up to eight analog telephones (provides 8 FXS ports) to a VoIP network using the Session Initiation Protocol…

Cisco CallManager-CCME

Cisco Small Business SPA500 IP Phone Series Admin…

Firewall.cx readers can now access and freely download the Cisco Small Business Administration Guide for Cisco SPA500 series IP phones. The Administration Guide for Cisco SPA500 series IP phon…

TCP - UDP Protocol Analysis

Transmission Control Protocol - Part 4: In-Depth…

This article is an introduction to the 7-page TCP Header analysis section that follows. We briefly view each section of the TCP Header and then move on to its analysis using detailed colourful diagra…

Windows Servers

How to Install Desktop Icons (Computer, User’s Fi…

One of the first things IT Administrators and IT Managers notice after a fresh installation of Windows 2012 Server is that there are no Desktop Icons apart from the Recycle Bin. Desktop icons such as…

Cisco CallManager-CCME

Cisco CallManager Express Basic Concepts - Part 2

Our previous article, Cisco CallManager Express Basic Concepts - Part 1 covered the very basic concepts of CCME and its operation. This article continues with the Cisco CallManager Express basic conc…

Cisco Switches

Configuring SPAN On Cisco Catalyst Switches - Mon…

Being able to monitor your network traffic is essential when it comes to troubleshooting problems, performing a security audit or even casually checking your network for suspicious traffic. Back in…

SASE & SD-WAN Networks

WAN Optimization vs SD WAN Networks. Today’s Chal…

Enterprises have been successfully running WAN optimization appliances at their many distributed sites for years. The devices have done a good job of helping businesses squeeze as much capacity as po…