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Category: Networking

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Atlas reading a tablet while seated on books with a coffee

Showing 1-9 of 9 posts.

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One public IP, two Exchange servers: Atlas holding a globe, with HAProxy routing to Exchange 01 and Exchange 02

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5 Nov 2026 7 min read

Two Exchange Servers, One IP Address

I have a production Exchange server and a lab one, and a single public IP address. Both want port 443. HAPMan is the free tool I built to route them by name, with HAProxy doing...

Microsoft #Exchange #HAProxy

Secure Dynamic DNS Updates to Azure with AzureDNSSync

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15 Jul 2025 10 min read Updated 17 Jul 2025

Secure Dynamic DNS Updates to Azure with AzureDNSSync

Introduction Like many home users, my broadband connection comes with a dynamically assigned public IP address. This means that my IP can change at any time sometimes without no...

Automation #Ubuntu #azure-automation

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12 Jul 2025 20 min read

OpenVPN Site-to-Site setup

Introduction Setting up a Site-to-Site VPN is a powerful way to securely link two remote networks—such as a home lab and a cloud environment—so they behave as if they’re on the...

Azure #Azure #Easy-RSA

Always On VPN Entra Join – Part 5 Deploy Always On VPN for Entra Joined Devices

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6 May 2025 4 min read

Always On VPN Entra Join – Part 5 Deploy Always On VPN for Entra Joined Devices

This is part 5 of my Always On VPN series You can review the pervious posts if required: Introduction So we now have everything in place for Always On VPN….

Microsoft #Microsoft

Always On VPN Entra Join – Part 4 Configure Always On VPN for Entra Joined Devices

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6 May 2025 9 min read

Always On VPN Entra Join – Part 4 Configure Always On VPN for Entra Joined Devices

This is part 4 of my Always On VPN series You can review the pervious posts if required: Introduction The infrastructure you have in its current state is great if…

Microsoft #Microsoft

Always On VPN Entra Join – Part 3 Core Always On VPN Infrastructure

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6 May 2025 11 min read

Always On VPN Entra Join – Part 3 Core Always On VPN Infrastructure

This is part 3 of my Always On VPN series You can review the pervious posts if required: Introduction Now we have the certificates available the next step is to…

Microsoft #Microsoft

Always On VPN Entra Join – Part 2 Certificate Templates

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6 May 2025 8 min read

Always On VPN Entra Join – Part 2 Certificate Templates

This is part 2 of my Always On VPN series You can review the pervious posts if required: Introduction Certificates are at the heart of Always On VPN as this…

Microsoft #Microsoft

Always On VPN Entra Join – Part 1 Whats needed

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6 May 2025 4 min read

Always On VPN Entra Join – Part 1 Whats needed

This is part 1 of my Always On VPN series You can review the pervious posts if required: Introduction Always on VPN is a technology thats been around for some…

Entra #Microsoft

Cost effective IPSec Site to Site VPN with Azure and UDM

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9 Jun 2024 11 min read Updated 10 Jun 2024

Cost effective IPSec Site to Site VPN with Azure and UDM

Introduction There are many ways to establish a VPN between my UDM and Azure andI’ve tried them all, but, for the best result I would still recommend using an Azure…

Azure #Azure #Microsoft