III - Administrative Sensitive
Rules and Groups employed by this XCCDF Profile
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SRG-NET-000041
<GroupDescription></GroupDescription>Group -
The Remote Access VPN Gateway and/or client must display the Standard Mandatory DoD Notice and Consent Banner before granting remote access to the network.
<VulnDiscussion>Display of a standardized and approved use notification before granting access to the network ensures privacy and security no...Rule Medium Severity -
SRG-NET-000042
<GroupDescription></GroupDescription>Group -
The Remote Access VPN Gateway and/or client must enforce a policy to retain the Standard Mandatory DoD Notice and Consent Banner on the screen until users acknowledge the usage conditions and take explicit actions to log on for further access.
<VulnDiscussion>The banner must be acknowledged by the user prior to allowing the user access to the network. This provides assurance that th...Rule Medium Severity -
SRG-NET-000043
<GroupDescription></GroupDescription>Group -
The publicly accessible VPN Gateway must display the Standard Mandatory DoD Notice and Consent Banner before granting access to the system.
<VulnDiscussion>Display of a standardized and approved use notification before granting access to the publicly accessible VPN gateway ensures...Rule Medium Severity -
SRG-NET-000053
<GroupDescription></GroupDescription>Group -
The VPN Gateway must limit the number of concurrent sessions for user accounts to 1 or to an organization-defined number.
<VulnDiscussion>VPN gateway management includes the ability to control the number of users and user sessions that utilize a VPN gateway. Limi...Rule Medium Severity -
SRG-NET-000062
<GroupDescription></GroupDescription>Group -
The TLS VPN Gateway must use TLS 1.2, at a minimum, to protect the confidentiality of sensitive data during transmission for remote access connections.
<VulnDiscussion>Using older unauthorized versions or incorrectly configuring protocol negotiation makes the gateway vulnerable to known and u...Rule High Severity -
SRG-NET-000063
<GroupDescription></GroupDescription>Group -
The remote access VPN Gateway must use a digital signature generated using FIPS-validated algorithms and an approved hash function to protect the integrity of TLS remote access sessions.
<VulnDiscussion>Without integrity protection, unauthorized changes may be made to the log files and reliable forensic analysis and discovery ...Rule Medium Severity -
SRG-NET-000063
<GroupDescription></GroupDescription>Group -
The VPN Gateway must be configured to use IPsec with SHA-2 at 384 bits or greater for hashing to protect the integrity of remote access sessions.
<VulnDiscussion>Without strong cryptographic integrity protections, information can be altered by unauthorized users without detection. SHA-...Rule Medium Severity -
SRG-NET-000074
<GroupDescription></GroupDescription>Group -
The IPSec VPN must be configured to use a Diffie-Hellman (DH) Group of 16 or greater for Internet Key Exchange (IKE) Phase 1.
<VulnDiscussion>Use of an approved DH algorithm ensures the IKE (Phase 1) proposal uses FIPS-validated key management techniques and processe...Rule High Severity -
SRG-NET-000075
<GroupDescription></GroupDescription>Group -
If the site-to-site VPN implementation uses L2TP, L2TPv3 sessions must be authenticated prior to transporting traffic.
<VulnDiscussion>L2TPv3 sessions can be used to transport layer-2 protocols across an IP backbone. These protocols were intended for link-loca...Rule Medium Severity -
SRG-NET-000077
<GroupDescription></GroupDescription>Group -
The VPN Gateway must generate log records containing information to establish what type of events occurred.
<VulnDiscussion>Without establishing what type of event occurred, it would be difficult to establish, correlate, and investigate the events l...Rule Low Severity
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