Articles That Might Interest:

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…

SASE & SD-WAN Networks

The Most Common Worst Networking Practices and Ho…

In the rush to keep pace with the many challenges facing today’s organizations, all too often networking teams end up adopting practices and processes that are, shall we say, less than perfect. You p…

Network Fundamentals

The Importance of a Network Analyzer – Packet Sni…

Network Analyzers, also known as Packet Sniffers, are amongst the most popular network tools found inside any Network Engineer’s toolkit. A Network Analyzer allows users to capture network packets as…

Cisco Services & Technologies

Install & Fix Cisco VPN Client on Windows 10 (32…

This article shows to how correctly install Cisco VPN Client (32 & 64 bit) on Windows 10 (32 & 64 bit) using simple steps, overcome the ‘This app can’t run on this PC’ installation error, plu…

ICMP Protocol

ICMP Protocol - Part 7: Time Exceeded Message Ana…

The ICMP - Time Exceeded message is one which is usually created by gateways or routers. In order to fully understand this ICMP message, you must be familiar with the IP header within a packet. Our r…

Spanning Tree Protocol (STP)

Spanning Tree Protocol – Part 2: Rapid STP Port C…

Spanning Tree Protocol, Rapid STP port costs and port states are an essential part of the STP algorithm that affect how STP decides to forward or block a port leading to the Root Bridge. In our prev…

Web Application Vulnerability Scanners

Differences between Network & Web Application Sec…

According to Wikipedia, security is defined as the degree of resistance to, or protection from, harm. It applies to any vulnerable and valuable asset which in almost all cases, will include an organi…

Cisco Firewalls

Cisco ASA 5500-X Series Firewall with IPS, ASA CX…

The Cisco ASA Firewall 5500-X series has evolved from the previous ASA 5500 Firewall series, designed to protect mission critical corporate networks and data centers from today’s advanced security th…

VLAN Networks

VLAN Tagging - Understanding VLANs Ethernet Frames

We mentioned that Trunk Links are designed to pass frames (packets) from all VLANs, allowing us to connect multiple switches together and independently configure each port to a specific VLAN. However…

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…

Web Application Vulnerability Scanners

Web Application Security Best Practices that Help…

Successful web application attacks and the data breaches that are resulting from these attacks, have now become everyday news, with large corporations being hit constantly. Our article covering majo…

Cisco Routers

Configuring Site to Site IPSec VPN Tunnel Between…

Site-to-Site IPSec VPN Tunnels are used to allow the secure transmission of data, voice and video between two sites (e.g offices or branches). The VPN tunnel is created over the Internet public netwo…