Articles That Might Interest:

Cisco Routers

How to Restrict Cisco IOS Router VPN Client to La…

In our article Cisco VPN Client Configuration - Setup for IOS Router we explained how to setup up a Cisco IOS router to support Cisco IPSec VPN clients, allowing remote users to securely connec…

Cisco CallManager-CCME

IP Phone 7900 Series (7940, 7941, 7942, 7960, 796…

This article explains how to reset your Cisco 7940, 7941, 7942, 7960, 7961, 7962 & 7920 IP phone to factory defaults, and how to upgrade its firmware to the latest available version. When initia…

Network Address Translation - NAT

Static NAT - Part 2

The previous page (Static NAT - Part 1) helped us understand what exactly happens with Static NAT and how it works, and we saw a few examples of how to use it in various network configurations. This…

Linux - Unix

Configuring Linux to Act as a Firewall - Linux IP…

What exactly is a firewall? As in the non-computer world, a firewall acts as a physical barrier to prevent fires from spreading. In the computer world too, the firewall acts in a similar manner, only…

Supernetting & CIDR

What is Supernetting (Route Summarization) & How…

Supernetting is the opposite of of subnetting, and is also known as route aggregation or CIDR (Classless Inter-Domain Routing). Supernetting is a technique that allows multiple smaller network blocks…

Cisco Routers

How To Fix Cisco Configuration Professional (CCP)…

Our previous article covered how to fix the Cisco Configuration Professional display/window problem where the CCP application is displayed in about one third of the browser’s window. Users looking fo…

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

How to Join a Windows 8, 8.1 Client to Windows Do…

In this article, we will show how to add a Windows 8 or Windows 8.1 client to a Windows Domain / Active Directory. The article can be considered an extention to our Windows 2012 Server article coveri…

Cisco Wireless

Wireless (Wifi) WEP WPA WPA2 Key Generator

The Firewall.cx Wireless LAN Key Generator will allow the generation of a WEP or WPA ASCII based encryption key and will provide the equivalent HEX or ASCII string so it can be inserted directly i…

Linux - Unix

Installation and Configuration of Linux DHCP Serv…

For a cable modem or a DSL connection, the service provider dynamically assigns the IP address to your PC. When you install a DSL or a home cable router between your home network and your modem, your…

Windows Servers

How to Easily Change Network Card Profile / Netwo…

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 Protocols

IPv6 Subnetting - How and Why to Subnet IPv6

In the previous tutorials, I went through the need for IPv6, and followed it up by drawing out the salient features which overcomes issues with IPv4. We took the journey of looking inside the headers…

SASE & SD-WAN Networks

MPLS vs. SD-WAN vs. Internet vs. Cloud Network. C…

The Wide Area Network (WAN) is the backbone of the business. It ties together the remote locations, headquarters and data centers into an integrated network. Yet, the role of the WAN has evolved in r…