| Plugin Title | Open NetBIOS |
| Cloud | |
| Category | VPC Network |
| Description | Determine if UDP port 137 or 138 for NetBIOS is open to the public |
| More Info | While some ports such as HTTP and HTTPS are required to be open to the public to function properly, more sensitive services such as NetBIOS should be restricted to known IP addresses. |
| GOOGLE Link | https://cloud.google.com/vpc/docs/using-firewalls |
| Recommended Action | Restrict UDP ports 137 and 138 to known IP addresses |