The firewall implementation must protect the integrity of transmitted information.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-37293	SRG-NET-000207-FW-000123	SV-49054r1_rule		Medium

Description
This control applies to information transmitted by the firewall application. Preventing the disclosure of information while in transit requires applications to take measures to employ some form of cryptographic mechanism in order to protect the information during transmission. This is usually achieved through the use of Transport Layer Security (TLS), SSL VPN, or IPSEC tunnel. Without integrity controls, information traveling over commercial networks could be altered or compromised without detection. Alternative physical protection measures include Protected Distribution Systems (PDS). PDS are used to transmit unencrypted classified National Security Information (NSI) through an area of lesser classification or control. Since the classified NSI is unencrypted, the PDS must provide adequate electrical, electromagnetic, and physical safeguards to deter exploitation. Refer to NSTSSI No. 7003 for additional details on a PDS. Firewall management traffic and other privileged communications originating from the firewall must be protected by integrity mechanisms while in transit (i.e., transmission encryption).

Description

This control applies to information transmitted by the firewall application. Preventing the disclosure of information while in transit requires applications to take measures to employ some form of cryptographic mechanism in order to protect the information during transmission. This is usually achieved through the use of Transport Layer Security (TLS), SSL VPN, or IPSEC tunnel. Without integrity controls, information traveling over commercial networks could be altered or compromised without detection. Alternative physical protection measures include Protected Distribution Systems (PDS). PDS are used to transmit unencrypted classified National Security Information (NSI) through an area of lesser classification or control. Since the classified NSI is unencrypted, the PDS must provide adequate electrical, electromagnetic, and physical safeguards to deter exploitation. Refer to NSTSSI No. 7003 for additional details on a PDS. Firewall management traffic and other privileged communications originating from the firewall must be protected by integrity mechanisms while in transit (i.e., transmission encryption).

STIG	Date
Firewall Security Requirements Guide	2013-04-24

Details

Check Text ( C-45540r1_chk )
This control does not apply if the information is protected by a physical security solution (e.g., Protective Distribution System [PDS] or physical access control) while in transit. Inspect the configuration for each firewall interface. Verify an integrity mechanism (encryption) is used to check the integrity of information during transit. If the firewall implementation does not protect the integrity of information transmitted, this is a finding.

Check Text ( C-45540r1_chk )

This control does not apply if the information is protected by a physical security solution (e.g., Protective Distribution System [PDS] or physical access control) while in transit.

Inspect the configuration for each firewall interface. Verify an integrity mechanism (encryption) is used to check the integrity of information during transit.

If the firewall implementation does not protect the integrity of information transmitted, this is a finding.

Fix Text (F-42218r1_fix)
Configure the firewall implementation to protect the integrity of transmitted information originating from the firewall.