From the Summer 2023 Issue

Defense In Depth and DMZ WEB Server Deployment

Syed Taha Ahmed Jafri
Information Security Specialist |

      
Defense In Depth and DMZ

Introduction
This article will discuss Defense in Depth (DID) in detail and minimum steps to securely deploy a Web server in DMZ for a FinTech 3-tier application.

3-TIER ARCHITECTURE
In software engineering the methodology of 3-tier architecture is used to divide an application into logical boundaries. These boundaries are logical and their main benefit is that each layer OS, App, Virtual Machine and Hardware can be upgraded, downgraded, and replaced without disturbing other layers.

The three layers of this architecture are:

  1. PRESENTATION LAYER: This tier is the main public facing layer, where users . . .

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