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Application Layer Gateway Security Requirements Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • SRG-NET-000233

    <GroupDescription></GroupDescription>
    Group
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  • The ALG must recognize only system-generated session identifiers.

    &lt;VulnDiscussion&gt;Network elements (depending on function) utilize sessions and session identifiers to control application behavior and user ac...
    Rule Medium Severity
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  • SRG-NET-000234

    <GroupDescription></GroupDescription>
    Group
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  • The ALG must generate unique session identifiers using a FIPS 140-2 approved random number generator.

    &lt;VulnDiscussion&gt;Sequentially generated session IDs can be easily guessed by an attacker. Employing the concept of randomness in the generatio...
    Rule Medium Severity
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  • SRG-NET-000235

    <GroupDescription></GroupDescription>
    Group
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  • The ALG must fail to a secure state upon failure of initialization, shutdown, or abort actions.

    &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
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  • SRG-NET-000236

    <GroupDescription></GroupDescription>
    Group
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  • The ALG that is part of a CDS must block the transfer of data with malformed security attribute metadata structures.

    &lt;VulnDiscussion&gt;Enforcing allowed information flows based on metadata enables simpler and more effective flow control. Metadata is informatio...
    Rule Medium Severity
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  • In the event of a system failure of the ALG function, the ALG must save diagnostic information, log system messages, and load the most current security policies, rules, and signatures when restarted.

    &lt;VulnDiscussion&gt;Failure in a secure state can address safety or security in accordance with the mission needs of the organization. Failure to...
    Rule Medium Severity
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  • SRG-NET-000246

    <GroupDescription></GroupDescription>
    Group
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