I am attempting to setup a VPN on my droplet running Unbuntu 20.04.3 following this guide (https://www.digitalocean.com/community/tutorials/how-to-set-up-an-openvpn-server-on-ubuntu-18-04). I have setup a Debian installation on a separate PC to act as the CA server. This Debian installation can connect to my wifi, and I have made sure that port 22 is open from the outside. However, I cannot SSH into it via its public IP address, either from my droplet or another pc on my network. However, my other PC can SSH into this Debian installation using its LAN address. Why might this be?
as a note, I am using password authentication, and I can be sure that the password is right as I can access the Debian install via SSH over my LAN.
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