| Plugin Title | Open Hadoop HDFS NameNode Metadata Service |
| Cloud | |
| Category | VPC Network |
| Description | Determine if TCP port 8020 for HDFS NameNode metadata service 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 Hadoop/HDFS should be restricted to known IP addresses. |
| GOOGLE Link | https://cloud.google.com/vpc/docs/using-firewalls |
| Recommended Action | Restrict TCP port 8020 to known IP addresses for Hadoop/HDFS. |