Contact Firewall.cx
Articles That Might Interest:
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…
Windows Servers
How to Install and Configure SNMP for Windows Ser…
Simple Network Management Protocol (SNMP) is a UDP protocol that uses port 161 to monitor and collect detailed information on any network device supporting the SNMP protocol. All Windows servers supp…
Network Fundamentals
Media Access Control - MAC Addresses
A MAC address, or Media Access Control address, is a unique identifier assigned to a network interface controller (NIC) for use as a network address in communications within a network segment. It i…
Virtualization & VM Backup
How to Fix VMware ESXi Virtual Machine 'Invalid S…
In this article, we'll show you how to deal with VMs which are reported to have an Invalid Status as shown in the screenshot below. This is a common problem many VMware and System Administr…
Windows Servers
Windows Server 2016 Licensing Made Easy – Underst…
This article describes the new Windows Server 2016 Licensing model (per-core licensing) Microsoft has implemented for its new server-based operating system. While the Windows Server 2012 Licensing mo…
Network Cabling
Early Communication Technology - Morse Code and E…
We tend to think of digital communication as a new idea but in 1844 a man called Samuel Morse sent a message 37 miles from Washington D.C. to Baltimore, using his new invention ‘The Telegraph’. This…
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…
Cisco Switches
Cisco 4507R+E Layer 3 Installation: Redundant WS-…
It's no news that we here at Firewall.cx enjoy writing about our installations of Cisco equipment and especially devices that we don’t get to see and play with every day. Today we cover the installat…
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 VPN Client Configuration - Setup for IOS Ro…
Remote VPN access is an extremely popular service amongst Cisco routers and ASA Firewalls. The flexibility of having remote access to our corporate network and its resources literally from anywhere i…
Cisco Switches
Cisco Catalyst 4500 Series Zero-Downtime IOS Upgr…
The Supervisor Engine is the heart of the Cisco Catalyst 4500 and 6500 series switches. It is the equivalent of an engine in a car. Every packet that enters or exits your switch passes through the Su…
Linux - Unix
Advanced Linux Commands
Now that you're done learning some of the Basic Linux commands and how to use them to install Linux Software, it's time we showed you some of the other ways to work with Linux. Bear in mind that each…
Wi-Fi Key Generator
Follow Firewall.cx
Cisco Password Crack
Decrypt Cisco Type-7 Passwords on the fly!







