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VPN Services & Guides

Best VPN Review: Private Internet Access (PIA) Fe…

The market for Virtual Private Networks has exploded over the past few years. A wealth of new providers has appeared, promising logless browsing, true anonymity, and fast speeds. Through all that noi…

Cisco Wireless

Cisco Aironet 1242AG /1240 - Multiple SSID & 80…

This article explains how the Cisco 1240 series access point can be setup to provide support for multiple SSID, each SSID assigned to a separate VLAN. This type of configuration is id…

Virtualization & VM Backup

SysAdmin Day 2020 - Get your Free Amazon Voucher…

SysAdmin Day has arrived, and with it, gratitude for all the unsung heroes that 2020 has needed. Your hard work has made it possible for all of us to keep going, despite all challenges thrown our way…

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…

Linux - Unix

Linux File & Folder Permissions

File & folder security is a big part of any operating system and Linux is no exception! These permissions allow you to choose exactly who can access your files and folders, providing an overall…

Cisco Routers

Cisco GRE and IPSec - GRE over IPSec - Selecting…

GRE Tunnels are very common amongst VPN implementations thanks to their simplicity and ease of configuration. With broadcasting and multicasting support, as opposed to pure IPSec VPNs, they tend to b…

ICMP Protocol

ICMP Protocol - Part 1: Introduction

The Internet Control Message Protocol (ICMP), is a very popular protocol and actually part of an Internet Protocol (IP) implementation. Because IP wasn't designed to be absolutely reliable, ICMP came…

Cisco Switches

Forcing A Cisco Catalyst Switch To Use 3rd Party…

Many companies are seeking for Cisco SFP alternatives to help cut down the costs on these expensive modules. A frequent customer problem with Cisco's new line of Catalyst switches is that they do no…

Cisco CallManager-CCME

Configuring CallManager Express (CME) To Support…

Cisco is continuously developing its CallManager Express product, introducing new features and services to help keep up with its customers' and the market’s demands. With the rapid increase of the m…

Spanning Tree Protocol (STP)

Spanning Tree Protocol – Part 3: Bridge ID, Prior…

In this article we will examine the Spanning Tree Bridge ID structure, explain why it has increments of 4096, how VLAN information is embedded (for Per-VLAN Spanning Tree & multiple STP instances…

Cisco Routers

How To Secure Your Cisco Router Using Cisco AutoS…

In today’s complex network environments securing your network routers can be a daunting task, especially when there are so many CLI commands and parameters with different security implications for yo…

Cisco Routers

Cisco Router PPP Multilink Setup and Configuration

This article provides an in-depth explanation of PPP Multilink and shows how to configure a Cisco router to use PPP Multilink between two serial interfaces (WIC-1T). We'll show you the commands that…