Virtual machines should have all network ports restricted by their associated network security groups

NIST SP 800-53 Rev 5

• Information Flow Enforcement (AC-4)
• SC-7: Boundary Protection
• SC-7(3) Access Points

NIST SP 800-171 Rev 2

• 3.1.3 Control the flow of CUI in accordance with approved authorizations
• 3.13.1: Monitor, control, and protect communications (i.e., information transmitted or received by organizational systems) at the external boundaries and key internal boundaries of organizational systems.
• 3.13.2 Employ architectural designs, software development techniques, and systems engineering principles that promote effective information security within organizational systems
• 3.13.5 Implement subnetworks for publicly accessible system components that are physically or logically separated from internal networks
• 3.13.6: Deny network communications traffic by default and allow network communications traffic by exception (i.e., deny all, permit by exception).

RBI IT Framework for NBFCs

• 5 Policy for Information System Audit (IS Audit)

FedRAMP High

• AC-4 Information Flow Enforcement
• SC-7 Boundary Protection
• SC-7(3) Access Points

HIPAA HITRUST v9.2

• 0858.09m1Organizational.4-09.m 09.06 Network Security Management

PCI DSS v3.2.1

• 1.3.2 Limit inbound Internet traffic to IP addresses within the DMZ
• Do not allow unauthorized outbound traffic from the cardholder data environment to the Internet