this post was submitted on 01 Jan 2026
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Bit of a followup to my previous post. I now have a VPS with nginx working as a reverse proxy to some services on my DMZ. My router (UDM pro) is running a wireguard server and the VPS is acting as a client.

I've used Letsencrypt to get certs for the proxy, but the traffic between the proxy and the backend is plain HTTP still. Do I need to worry about securing that traffic considering its behind a VPN? If I should secure it, is there an easier way to do self-signed certs besides spinning up your own certificate authority? Do self-signed certs work between a proxy and a backend, or would one or the other of them throw a fit like a browser does upon encountering a self-signed cert?

I'd rather not have to manage another set of certs just for one service, and I don't want to involve my internal domain if possible.

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[–] xavier666@lemmy.umucat.day 1 points 8 hours ago (1 children)

If it’s a custom TLD (.lan, etc.) then you need to do self-signed

Can you share some resources on this?