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Application Layer Gateway Security Requirements Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • SRG-NET-000362

    <GroupDescription></GroupDescription>
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  • 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
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  • SRG-NET-000364

    <GroupDescription></GroupDescription>
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  • 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
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  • SRG-NET-000365

    <GroupDescription></GroupDescription>
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  • 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
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  • SRG-NET-000370

    <GroupDescription></GroupDescription>
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  • 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
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  • SRG-NET-000380

    <GroupDescription></GroupDescription>
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  • 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
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