III - Administrative Public
Rules and Groups employed by this XCCDF Profile
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SRG-NET-000078-VPN-000290
Group -
The Cisco ASA must be configured to generate log records containing information to establish when the events occurred.
Without establishing when events occurred, it is impossible to establish, correlate, and investigate the events leading up to an outage or attack. VPN gateways often have a separate audit log for ...Rule Low Severity -
SRG-NET-000336-VPN-001280
Group -
The Cisco ASA must be configured to queue log records locally in the event that the central audit server is down or not reachable.
If the system were to continue processing after audit failure, actions can be taken on the system that cannot be tracked and recorded for later forensic analysis. Because of the importance of ensu...Rule Medium Severity -
SRG-NET-000335-VPN-001270
Group -
The Cisco ASA must be configured to generate an alert that can be forwarded as an alert to organization-defined personnel and/or firewall administrator of all log failure events.
It is critical for the appropriate personnel to be aware if a system is at risk of failing to process audit logs as required. Without a real-time alert, security personnel may be unaware of an impe...Rule Medium Severity -
SRG-NET-000164-VPN-000560
Group -
The Cisco ASA must be configured to validate certificates via a trustpoint that identifies a DoD or DoD-approved certificate authority.
Without path validation, an informed trust decision by the relying party cannot be made when presented with any certificate not already explicitly trusted. To meet this requirement, the information...Rule Medium Severity -
SRG-NET-000512-VPN-002220
Group -
The Cisco ASA must be configured to use Internet Key Exchange (IKE) for all IPsec security associations.
Without IKE, the Security Parameter Index (SPI) is manually specified for each security association. IKE peers will negotiate the encryption algorithm and authentication or hashing methods as well ...Rule High Severity -
SRG-NET-000132-VPN-000460
Group -
The Cisco ASA must be configured to use Internet Key Exchange v2 (IKEv2) for all IPsec security associations.
In order to prevent unauthorized connection of devices, unauthorized transfer of information, or unauthorized tunneling (i.e., embedding of data types within data types); organizations must disable...Rule Medium Severity -
SRG-NET-000510-VPN-002180
Group -
The Cisco ASA must be configured to use NIST FIPS-validated cryptography for Internet Key Exchange (IKE) Phase 1.
Use of weak or untested encryption algorithms undermines the purposes of utilizing encryption to protect data. The VPN gateway must implement cryptographic modules adhering to the higher standards ...Rule Medium Severity -
SRG-NET-000371-VPN-001640
Group -
The Cisco ASA must be configured to specify Perfect Forward Secrecy (PFS) for the IPsec Security Association (SA) during IKE Phase 2 negotiation.
PFS generates each new encryption key independently from the previous key. Without PFS, compromise of one key will compromise all communications. The Phase 2 (Quick Mode) Security Association (SA)...Rule Medium Severity -
SRG-NET-000510-VPN-002160
Group -
The Cisco ASA must be configured to use a FIPS-validated cryptographic module to generate cryptographic hashes.
FIPS 140-2/140-3 precludes the use of invalidated cryptography for the cryptographic protection of sensitive or valuable data within federal systems. Unvalidated cryptography is viewed by NIST as p...Rule Medium Severity -
SRG-NET-000510-VPN-002170
Group -
The Cisco ASA must be configured to use a FIPS-validated cryptographic module to implement IPsec encryption services.
FIPS 140-2/140-3 precludes the use of invalidated cryptography for the cryptographic protection of sensitive or valuable data within federal systems. Unvalidated cryptography is viewed by NIST as p...Rule Medium Severity
Node 2
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