The HYCU virtual machine must enforce approved authorizations for controlling the flow of management information within the network device based on information flow control policies.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-246824	HYCU-AC-000006	SV-246824r768136_rule		Medium

Description
A mechanism to detect and prevent unauthorized communication flow must be configured or provided as part of the system design. If management information flow is not enforced based on approved authorizations, the network device may become compromised. Information flow control regulates where management information is allowed to travel within a network device. The flow of all management information must be monitored and controlled so it does not introduce any unacceptable risk to the network device or data.

Description

A mechanism to detect and prevent unauthorized communication flow must be configured or provided as part of the system design. If management information flow is not enforced based on approved authorizations, the network device may become compromised. Information flow control regulates where management information is allowed to travel within a network device. The flow of all management information must be monitored and controlled so it does not introduce any unacceptable risk to the network device or data.

STIG	Date
HYCU for Nutanix Security Technical Implementation Guide	2021-08-03

Details

Check Text ( C-50256r768134_chk )
By default, HYCU firewall is locked and enabled. The firewall only permits DHCP, SMB, and access to the web UI port 8443. Verify the firewall is running by executing the following command: sudo firewall-cmd --state If service is not running, this is a finding. Determine which services and ports are open by executing the following command: sudo firewall-cmd --list-all Output should show the following two lines: 'services: cockpit dhcpv6-client iscsi-target samba ssh' 'ports: 8443/tcp' If more services than those listed above are open, this is a finding.

Check Text ( C-50256r768134_chk )

By default, HYCU firewall is locked and enabled. The firewall only permits DHCP, SMB, and access to the web UI port 8443.

Verify the firewall is running by executing the following command:
sudo firewall-cmd --state

If service is not running, this is a finding.

Determine which services and ports are open by executing the following command:
sudo firewall-cmd --list-all

Output should show the following two lines:
'services: cockpit dhcpv6-client iscsi-target samba ssh'
'ports: 8443/tcp'

If more services than those listed above are open, this is a finding.

Fix Text (F-50210r768135_fix)
Enable the firewall by executing the following commands: sudo systemctl enable firewalld sudo systemctl start firewalld