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SSH to a machine across Cloudflare Tunnel

SSH to a machine across Cloudflare Tunnel

(assumes the machine is already connected to the Cloudflare tunnel, eg via Cloudflare Daemon)

  • Networks → "Home" → Public Hostname, Create:
    • Subdomain = ssh-s6.mundy.co
    • Type = SSH
    • URL = docker1.mundy.co (resolves to 192.168.123.146, the internal IP for "s6" docker host)

After setting up the public hostname above, you can SSH to a machine across cloudflare tunnel:

Source: SSH · Cloudflare Zero Trust docs

Add the following to ~/.ssh/config :

Host ssh-s6.mundy.co
	ProxyCommand /opt/homebrew/bin/cloudflared access ssh --hostname %h

Now just ssh like this:

ssh dan@ssh-ss6.mundy.co
ssh dan@ssh-ss6.mundy.co

Extra steps to make it browser based

Source: SSH · Cloudflare Zero Trust docs

  • Access → Applications, Create:
    • Overview:
      • Application name = ssh-sh
      • Application domain = ssh-s6.mundy.co
    • Policies:
      • Policy name = ssh-s6
      • Action = Allow
      • Include = dan@mundy.co
    • Authentication:
      • Identity Providers = Accept all available identity providers
    • Settings:
      • Additional Settings → Browser rendering = SSH
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