VPN – bmartins@blog~$

S2S VPN between Raspberry Pi and pfSense

I’ve recently bought a Raspberry Pi 4 device and, amongst other things, I thought of implementing a Site to Site VPN (using OpenVPN) on it, so I can more efficiently connect to environments I use, like Azure labs and stuff like that.

I’m not usually a step-by-step guides writer and, as such, I’ll just tell you the configuration I’ve used to setup the environment mentioned on this post’s subject. Another reason for writing this is that I wasn’t able to find a fully functional guide into this.

Azure P2S VPN routing caveats (with multiple VNet gateways)

I’ve recently worked with a customer that had an Azure Virtual Network Gateway in place to connect their remote workers (using native P2S functionality, supported under subnet 192.168.17.0/24) to both Azure and on-premises networks. Pretty usual setup, to be fair. Let’s say:

Virtual Network Gateway
- Name: vpngwA
- Virtual Network: vnetA (172.16.0.0/16)
Local Network Gateway
- Name: lngwA
- Remote Network: 192.168.0.0/24 (using S2S connection named “s2sA”)