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Virtual Private Network (VPN) Security Requirements Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • The VPN Gateway must use FIPS 140-2 compliant mechanisms for authentication to a cryptographic module.

    <VulnDiscussion>Unapproved mechanisms that are used for authentication to the cryptographic module are not verified, and therefore cannot be ...
    Rule Medium Severity
    Show

  • SRG-NET-000230

    <GroupDescription></GroupDescription>
    Group
    Show

  • The IPSec VPN must be configured to use FIPS-validated SHA-2 at 384 bits or higher for Internet Key Exchange (IKE).

    &lt;VulnDiscussion&gt;Without cryptographic integrity protections, information can be altered by unauthorized users without detection. Although al...
    Rule High Severity
    Show

  • SRG-NET-000231

    <GroupDescription></GroupDescription>
    Group
    Show

  • The VPN Gateway must invalidate session identifiers upon user logoff or other session termination.

    &lt;VulnDiscussion&gt;Captured sessions can be reused in "replay" attacks. This requirement limits the ability of adversaries from capturing and co...
    Rule Medium Severity
    Show

  • SRG-NET-000233

    <GroupDescription></GroupDescription>
    Group
    Show

  • The VPN Gateway must off-load audit records onto a different system or media than the system being audited.

    &lt;VulnDiscussion&gt;Information stored in one location is vulnerable to accidental or incidental deletion or alteration. Off-loading is a common...
    Rule Medium Severity
    Show

  • SRG-NET-000335

    <GroupDescription></GroupDescription>
    Group
    Show

  • The VPN Gateway must recognize only system-generated session identifiers.

    &lt;VulnDiscussion&gt;VPN gateways (depending on function) utilize sessions and session identifiers to control application behavior and user access...
    Rule Medium Severity
    Show

  • SRG-NET-000234

    <GroupDescription></GroupDescription>
    Group
    Show

  • The VPN Gateway must generate unique session identifiers using FIPS-validated Random Number Generator (RNG) based on the Deterministic Random Bit Generators (DRBG) algorithm.

    &lt;VulnDiscussion&gt;Both IPsec and TLS gateways use the RNG to strengthen the security of the protocols. Using a weak RNG will weaken the protoco...
    Rule Medium Severity
    Show

  • SRG-NET-000235

    <GroupDescription></GroupDescription>
    Group
    Show

  • The VPN Gateway must fail to a secure state if system initialization fails, shutdown fails, or aborts fail.

    &lt;VulnDiscussion&gt;Failure to a known safe state helps prevent systems from failing to a state that may cause loss of data or unauthorized acces...
    Rule Medium Severity
    Show

  • SRG-NET-000313

    <GroupDescription></GroupDescription>
    Group
    Show

  • The VPN Gateway must be configured to perform an organization-defined action if the audit reveals unauthorized activity.

    &lt;VulnDiscussion&gt;Remote access devices, such as those providing remote access to network devices and information systems, which lack automated...
    Rule Medium Severity
    Show

  • SRG-NET-000314

    <GroupDescription></GroupDescription>
    Group
    Show

  • The VPN Gateway administrator accounts or security policy must be configured to allow the system administrator to immediately disconnect or disable remote access to devices and/or users when needed.

    &lt;VulnDiscussion&gt;Without the ability to immediately disconnect or disable remote access, an attack or other compromise taking progress would n...
    Rule Medium Severity
    Show

  • The IPsec VPN Gateway must use AES encryption for the Internet Key Exchange (IKE) proposal to protect confidentiality of remote access sessions.

    &lt;VulnDiscussion&gt;Without confidentiality protection mechanisms, unauthorized individuals may gain access to sensitive information via a remote...
    Rule High Severity
    Show

  • SRG-NET-000320

    <GroupDescription></GroupDescription>
    Group
    Show

  • The VPN Gateway must transmit organization-defined access authorization information using FIPS 140-2-validated cryptography to a compliant authentication server, which enforces access control decisions.

    &lt;VulnDiscussion&gt;Protecting authentication communications between the client, the VPN Gateway, and the authentication server keeps this critic...
    Rule Medium Severity
    Show

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