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What is the real function and use of a DMZ on a network? Reasons why you want a DMZ and the benefits it offers The general idea is that you put your public faced servers in the "DMZ network" so that you can separate them from your private, trusted network The use case is that because your server has a public face, it can be remotely rooted If that happens, and a malicious party gains access to your server, he should be isolated in the DMZ network
Ideal system architecture for sensitive data access through DMZ Reverse Proxy@DMZ -> API Gateway@DMZ -> App@Internal -> (Data Access Service@Internal) -> DB@Internal Basically, API gateways are simple applications with few dependencies, and thus offering a much smaller attack surface that the main app Whether a data access service is needed is questionable
Should I enable domain authentication in my DMZ Place the Read-Only Domain Controller in the DMZ Harden the operating system to only allow Authentication traffic access from other servers in the DMZ and AD replication traffic from it's AD replication partners in the private network Block inbound requests from the DMZ to the private network (should already be done)
To DMZ, or not to DMZ - Information Security Stack Exchange The DMZ is a containment area so that a subverted server does not gain immediate access to your most valuable data (which will be presumably kept in the inner network) Your AD and SQL servers are meant to be used only by machines from your network, not by machines from the outside, so you put them in the inner network
Comparing Site to Site VPN with DMZ In terms of enterprise IT best practices: 1) A DMZ should be used if the application requires access from the public internet This means that users may not have VPN credentials or any other way to get into the private network, and must be exposed to the internet in order to be used 2) Private resources should stay on private networks If the application only need be used by a limited group