Securing Ollama External Access Guide | Generated by AI

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🦞 Review: Ollama External Access

What we did:

1. Set OLLAMA_HOST=0.0.0.0:11434 in the systemd service
2. Restarted Ollama — now listening on *:11434
3. Confirmed firewall is inactive (no blocks)

The good:

• Simple, one-line config change
• Works immediately — no proxy layer to maintain
• Direct API access from anywhere

The risks:

• No authentication — anyone who finds the port can use your H100 for free. GPU time isn’t cheap.
• No TLS — traffic is plaintext. Prompts/responses visible to anyone on the wire.
• No rate limiting — a bad actor could max out your GPU and spike your cloud bill.
• Port scanning — bots will find 11434 fast. It’s a known Ollama default.

What I’d recommend (sooner, not later):

1. Quick fix — ufw allow from <your-ip> to any port 11434 to whitelist just your IPs
2. Better — nginx reverse proxy with basic auth + HTTPS (Let’s Encrypt)
3. Best — Cloudflare Tunnel or Tailscale. Zero open ports, encrypted, authenticated

For personal dev work over the next few hours? You’re probably fine. For anything longer-term or production? Lock it down.

Want me to set up any of those?

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