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Use the self-signed cert between the proxy and the problem device; everything else talks to the proxy.

Or Wireguard.

Using VPNs on server infrastructure to punch a hole is a resume generating event.

Wireguard is not a VPN, it’s a protocol that can be used for a lot of things.

The wireguard protocol is an encapsulation or tunneling protocol... which is, by definition, a virtualized private network protocol.

It's not different from IPSec, GRE, VXLAN, etc. It's just the new hotness.

We use VXLAN extensively in our network, btw, and IKEv2/IPSec tunnels between sites.

WireGuard can be used to create a virtualised private network, but doesn't do so on its own, or without additional infrastructure. WireGuard tunnels network packages securely, with high throughput, from an arbitrary point A to an arbitrary point B. No more, no less.

Just because it can be used to recreate VPNs traditionally used to remotely dial into a secure network zone doesn't mean it shouldn't be used in far smaller use-cases. WireGuard doesn't constitute anything like a full VPN solution on its own.

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