Network misconfigurations

Security group allows inbound access to NetBIOS ports

Risk Level

Informational (4)



An AWS Security Group acts as a virtual firewall for your instances to control inbound and outbound traffic. We identified the security group ""{AwsEc2SecurityGroup}"" ({AwsEc2SecurityGroup.GroupId}) is configured to allow inbound access to TCP port 139 and UDP ports 137 and 138 (NetBIOS) from any IP address ( or ::/0).