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Firewall ​

Coolify requires specific network ports to be open in order to function properly across various environments. These ports enable web access, SSH connections, terminal sessions, and real-time communication.

The required ports may vary slightly depending on whether you're using a self-hosted setup or the managed version (Coolify Cloud).

Coolify Self-hosted ​

To ensure proper functionality when self-hosting Coolify, the following ports should be opened:

  • 8000 – HTTP access to the Coolify dashboard
  • 6001 – Real-time communications
  • 6002 – Terminal access (Required for Coolify version 4.0.0-beta.336 and above)
  • 22 – SSH access (or your custom SSH port)
  • 80 – SSL certificate generation via reverse proxy (Traefik or Caddy)
  • 443 – HTTPS traffic

These ports are required if you're accessing Coolify directly using your server’s IP address (e.g., http://<SERVER_IP>:8000).

Tip

If you're using a custom domain with Coolify’s integrated reverse proxy (Traefik or Caddy), you can safely close ports 8000, 6001, and 6002 after accesing the dashboard from your custom domain.

Caution

If you are using Oracle Cloud Free ARM Server, you need to allow these ports inside Oracle's Dashboard, otherwise you cannot reach your instance from the internet after installation.

Coolify Cloud ​

For Servers connected to Coolify Cloud, the following ports must be open:

  • 22 – SSH access (or your custom SSH port)
  • 80 – SSL certificate generation via reverse proxy (Traefik or Caddy)
  • 443 – HTTPS traffic

These are the only required ports, as all other services are managed for you by Coolify Cloud.

Closing Ports Using a Firewall ​

Coolify runs on Docker, which uses NAT-based iptables rules that can bypass traditional Linux firewalls like UFW. As a result, blocking ports using UFW alone will not be effective.

Most cloud providers offer integrated firewalls through their dashboards. If your provider supports this, it is highly recommended to use their firewall settings to manage open ports instead of relying on local tools like UFW.

If your provider does not offer firewall functionality, you can use one of the following advanced methods:

Coolify Self-hosted ​

CAUTION!!

Modifying firewall settings incorrectly may lead to access issues that are difficult to recover from.

Proceed with the following steps only if necessary, and if you fully understand the implications.

Use ufw-docker ​

ufw-docker is a community-maintained tool that helps bridge UFW and Docker by allowing you to block specific ports effectively. Refer to the GitHub repository for complete setup instructions

Coolify Cloud ​

For servers connected to Coolify Cloud, only the SSH port (typically 22) needs to be open for remote management.

If you wish to restrict access based on IP address, we have a list of public IPs used by Coolify Cloud:

Coolify Cloud’s IPs rarely change, but users will be notified by email if updates occur.

GitHub Integration ​

GitHub uses webhooks to communicate with Coolify. For this to work correctly:

  • Ensure TCP ports 80 and 443 are open.
  • (Optional) To restrict webhook access by IP, you can get the current list of GitHub’s outbound IPs from: https://api.github.com/meta (Check the hooks section)

For more details, refer to their documentation