What is the server hardening strategy when I use SSH tunneling?


New Member
May 15, 2023

I am using Proxmox with SSH tunneling. I have disabled all outside ports and connections, except for access via SSH tunneling.

In this way, what is my strategy for server hardening?

My setup:
- disabled root login
- use ssh keys instead password
- do not change the default SSH port, because I do not accept connections apart from tunneling.
- use fail2ban

What should I add?
Very bad in a cluster. All cluster communication is done via root.

Don't allow SSH access at all from the internet, only VPN or allow only static ip clients.
I should re-enable root and set SSH access only through VPN, yes? Is there anything else?


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