API Reference

Delete TCP/UDP Firewall Rule

Delete a TCP or UDP firewall inbound rule and its associated port forwarding configuration.

This endpoint removes port-based firewall rules that control TCP and UDP traffic to instances within the isolated network. Use this endpoint specifically for TCP and UDP protocol rules with port forwarding configurations.

Use Cases:

  • Service Decommissioning: Remove rules for services no longer in use
  • Security Hardening: Close unnecessary ports and reduce attack surface
  • Rule Management: Clean up obsolete or conflicting port forwarding rules
  • Incident Response: Quickly block specific ports during security incidents

Important Notes:

  • This endpoint is specifically for TCP and UDP rules with port forwarding
  • Both the firewall rule and port forwarding configuration are removed
  • Rule deletion is immediate and cannot be undone
  • Verify rule and port IDs before deletion

Service Impact:

  • Services using the configured ports will become inaccessible
  • Existing connections may be terminated immediately
  • Load balancers and health checks may be affected
  • Consider maintenance windows for critical services

Security Considerations:

  • Removing rules improves security by reducing exposed ports
  • Ensure alternative access methods are available if needed
  • Document rule changes for audit and compliance purposes
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