Contact Firewall.cx
Articles That Might Interest:
Network Address Translation - NAT
Dynamic NAT - Part 2
Our previous article, Dynamic NAT - Part 1, covered the basic idea of Dynamic Network Address Translation. We are now going to take a closer look at the packets as they traverse the Dynamic NAT enabl…
Network Fundamentals
Network Unicast - Its role and Importance
Unicast is a communication method used in computer networking where data is sent from a single sender to a specific destination device. In this method, the sender sends the data packet to a uni…
Security Service Edge (SSE)
Security Service Edge (SSE) Limitations & Disadva…
This article explores the Security Service Edge (SSE) portion of Secure Access Service Edge (SASE) and the need for holistic cybersecurity protections.
We lightly touch upon the drivers for tighter…
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…
Subnetting
IP Subnetting - Part 4: Routing Between Subnets
Routing and Communication between subnets is the main topic here. This article analyses communications between subnets. We provide examples on different methods that can be used to enable subnet comm…
Virtualization & VM Backup
How to Enable SNMP on VMware ESXi Host & Configur…
In this article we will show you how to enable SNMP on your VMware ESXi host, configure SNMP Community string and configure your ESXi firewall to allow or block access to the SNMP service from specif…
Ethernet Protocol, CSMA/CD, Collisions
Introduction to Ethernet Collisions
The word "Collision" shouldn't be any new news to people who work with networks everyday. If it is thought, don't worrie, that's why you are here.
A collision is an event that happens on an Ethernet…
Linux - Unix
How To Secure Your Linux Server or Workstation -…
Below are some of the most common recommendations and method to effectively secure a Linux Server or Workstation.
Boot Disk
One of the foremost requisites of a secure Linux server is the boot disk…
Windows Servers
Creating Windows Users and Groups with Windows 20…
In a Windows server environment, it is very important that only authenticated users are allowed to log in for security reasons. To fulfill this requirement the creation of User accounts and Groups is…
Ethernet Protocol, CSMA/CD, Collisions
IEEE 802.3 Interframe Spacing
The IEEE 802.3 specification states that before a station can attempt to transmit on the wire, it must first wait until it has heard 9.6 microseconds of silence. Many popular myths have arisen surrou…
Web Application Vulnerability Scanners
How to Test for SQL Injection Attacks & Vulnerabi…
SQL injection vulnerabilities have held the first spot on the OWASP Top 10 list for quite some time. This is due to the fact that they are both still widespread and can lead to very serious consequen…
Windows Servers
New Upcoming Features in Hyper-V vNext - Free Tr…
With the release of Hyper-V vNext just around the corner, Altaro has organized a Free webinar that will take you right into the new Hyper-V vNext release. Microsoft Hyper-V MVP, Aidan Finn and Micros…
Wi-Fi Key Generator
Follow Firewall.cx
Cisco Password Crack
Decrypt Cisco Type-7 Passwords on the fly!







