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Application Layer Gateway Security Requirements Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • The ALG providing content filtering must update malicious code protection mechanisms and signature definitions whenever new releases are available in accordance with organizational configuration management procedures.

    <VulnDiscussion>The malicious software detection functionality on network elements needs to be constantly updated in order to identify new th...
    Rule Medium Severity
  • SRG-NET-000273

    <GroupDescription></GroupDescription>
    Group
  • The ALG must generate error messages that provide the information necessary for corrective actions without revealing information that could be exploited by adversaries.

    &lt;VulnDiscussion&gt;Providing too much information in error messages risks compromising the data and security of the application and system. Org...
    Rule Medium Severity
  • SRG-NET-000280

    <GroupDescription></GroupDescription>
    Group
  • The ALG that is part of a CDS must enforce information flow control based on organization-defined metadata.

    &lt;VulnDiscussion&gt;Enforcing allowed information flows based on metadata enables simpler and more effective flow control. Metadata is informatio...
    Rule Medium Severity
  • SRG-NET-000280

    <GroupDescription></GroupDescription>
    Group
  • SRG-NET-000282

    <GroupDescription></GroupDescription>
    Group
  • The ALG that is part of a CDS must decompose information into organization-defined, policy-relevant subcomponents for submission to policy enforcement mechanisms before transferring information between different security domains.

    &lt;VulnDiscussion&gt;Policy enforcement mechanisms apply filtering, inspection, and/or sanitization rules to the policy-relevant subcomponents of ...
    Rule Medium Severity
  • SRG-NET-000283

    <GroupDescription></GroupDescription>
    Group
  • The ALG that is part of a CDS, when transferring information between different security domains, must implement organization-defined security policy filters requiring fully enumerated formats that restrict data structure and content.

    &lt;VulnDiscussion&gt;Data structure and content restrictions reduce the range of potential malicious and/or unsanctioned content in cross-domain t...
    Rule Medium Severity
  • SRG-NET-000284

    <GroupDescription></GroupDescription>
    Group
  • The ALG that is part of a CDS, when transferring information between different security domains, must examine the information for the presence of organization-defined unsanctioned information.

    &lt;VulnDiscussion&gt;Without the capability to examine information, there is no means to determine the presence of information not authorized for ...
    Rule Medium Severity
  • SRG-NET-000285

    <GroupDescription></GroupDescription>
    Group
  • The ALG that is part of a CDS must prohibit the transfer of unsanctioned information in accordance with the security policy when transferring information between different security domains.

    &lt;VulnDiscussion&gt;The ability to prohibit information transfer is fundamentally necessary to prevent unintended and unauthorized data flows. Fa...
    Rule Medium Severity
  • SRG-NET-000288

    <GroupDescription></GroupDescription>
    Group
  • The ALG providing content filtering must block or restrict detected prohibited mobile code.

    &lt;VulnDiscussion&gt;Mobile code is defined as software modules obtained from remote systems, transferred across a network, and then downloaded an...
    Rule Medium Severity
  • SRG-NET-000289

    <GroupDescription></GroupDescription>
    Group
  • The ALG providing content filtering must prevent the download of prohibited mobile code.

    &lt;VulnDiscussion&gt;Mobile code is defined as software modules obtained from remote systems, transferred across a network, and then downloaded an...
    Rule Medium Severity
  • SRG-NET-000313

    <GroupDescription></GroupDescription>
    Group
  • The ALG providing intermediary services for remote access communications traffic must control remote access methods.

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

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