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Application Layer Gateway Security Requirements Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • The ALG providing user authentication intermediary services using PKI-based user authentication must implement a local cache of revocation data to support path discovery and validation in case of the inability to access revocation information via the network.

    <VulnDiscussion>Without configuring a local cache of revocation data, there is the potential to allow access to users who are no longer autho...
    Rule Medium Severity
    Show

  • The ALG providing user authentication intermediary services must conform to Federal Identity, Credential, and Access Management (FICAM)-issued profiles.

    <VulnDiscussion>Without conforming to FICAM-issued profiles, the information system may not be interoperable with FICAM-authentication protoc...
    Rule Medium Severity
    Show

  • SRG-NET-000355

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ALG providing user authentication intermediary services using PKI-based user authentication must only accept end entity certificates issued by DoD PKI or DoD-approved PKI Certification Authorities (CAs) for the establishment of protected sessions.

    &lt;VulnDiscussion&gt;Non-DoD approved PKIs have not been evaluated to ensure that they have security controls and identity vetting procedures in p...
    Rule Medium Severity
    Show

  • SRG-NET-000362

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ALG providing content filtering must protect against known and unknown types of Denial of Service (DoS) attacks by employing rate-based attack prevention behavior analysis.

    &lt;VulnDiscussion&gt;If the network does not provide safeguards against DoS attacks, network resources will be unavailable to users. Installation...
    Rule Medium Severity
    Show

  • SRG-NET-000362

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ALG must implement load balancing to limit the effects of known and unknown types of Denial of Service (DoS) attacks.

    &lt;VulnDiscussion&gt;If the network does not provide safeguards against DoS attacks, network resources will be unavailable to users. Load balancin...
    Rule Medium Severity
    Show

  • SRG-NET-000362

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ALG providing content filtering must protect against known types of Denial of Service (DoS) attacks by employing signatures.

    &lt;VulnDiscussion&gt;If the network does not provide safeguards against DoS attacks, network resources will be unavailable to users. Installatio...
    Rule Medium Severity
    Show

  • SRG-NET-000362

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ALG providing content filtering must protect against or limit the effects of known and unknown types of Denial of Service (DoS) attacks by employing pattern recognition pre-processors.

    &lt;VulnDiscussion&gt;If the network does not provide safeguards against DoS attacks, network resources will be unavailable to users. Installation...
    Rule Medium Severity
    Show

  • SRG-NET-000364

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ALG must only allow incoming communications from organization-defined authorized sources routed to organization-defined authorized destinations.

    &lt;VulnDiscussion&gt;Unrestricted traffic may contain malicious traffic which poses a threat to an enclave or to other connected networks. Additio...
    Rule Medium Severity
    Show

  • SRG-NET-000365

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ALG must fail securely in the event of an operational failure.

    &lt;VulnDiscussion&gt;If a boundary protection device fails in an unsecure manner (open), information external to the boundary protection device ma...
    Rule Medium Severity
    Show

  • SRG-NET-000370

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ALG must identify and log internal users associated with denied outgoing communications traffic posing a threat to external information systems.

    &lt;VulnDiscussion&gt;Without identifying the users who initiated the traffic, it would be difficult to identify those responsible for the denied c...
    Rule Medium Severity
    Show

  • SRG-NET-000380

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ALG must behave in a predictable and documented manner that reflects organizational and system objectives when invalid inputs are received.

    &lt;VulnDiscussion&gt;A common vulnerability of network elements is unpredictable behavior when invalid inputs are received. This requirement guard...
    Rule Medium Severity
    Show

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