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Application Layer Gateway Security Requirements Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • SRG-NET-000502

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  • The ALG must generate audit records when successful/unsuccessful attempts to delete categories of information (e.g., classification levels) occur.

    &lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficu...
    Rule Medium Severity
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  • SRG-NET-000503

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  • The ALG providing user access control intermediary services must generate audit records when successful/unsuccessful logon attempts occur.

    &lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficu...
    Rule Medium Severity
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  • SRG-NET-000505

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  • The ALG providing user access control intermediary services must generate audit records showing starting and ending time for user access to the system.

    &lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficu...
    Rule Medium Severity
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  • SRG-NET-000510

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  • The ALG must implement antispoofing mechanisms to prevent adversaries from falsifying the security attributes indicating the successful application of the security process.

    &lt;VulnDiscussion&gt;Some attack vectors operate by altering the security attributes of an information system to intentionally and maliciously imp...
    Rule Medium Severity
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  • The ALG providing encryption intermediary services must implement NIST FIPS-validated cryptography to generate cryptographic hashes.

    &lt;VulnDiscussion&gt;Use of weak or untested encryption algorithms undermines the purposes of utilizing encryption to protect data. The network el...
    Rule Medium Severity
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  • SRG-NET-000510

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  • The ALG providing encryption intermediary services must implement NIST FIPS-validated cryptography for digital signatures.

    &lt;VulnDiscussion&gt;Use of weak or untested encryption algorithms undermines the purposes of utilizing encryption to protect data. The network el...
    Rule Medium Severity
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  • SRG-NET-000510

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  • The ALG providing encryption intermediary services must use NIST FIPS-validated cryptography to implement encryption services.

    &lt;VulnDiscussion&gt;Use of weak or untested encryption algorithms undermines the purposes of utilizing encryption to protect data. The network el...
    Rule Medium Severity
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  • SRG-NET-000511

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  • The ALG must off-load audit records onto a centralized log server in real time.

    &lt;VulnDiscussion&gt;Off-loading ensures audit information does not get overwritten if the limited audit storage capacity is reached and also prot...
    Rule Medium Severity
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  • SRG-NET-000511

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  • The ALG that is part of a CDS must have the capability to implement journaling.

    &lt;VulnDiscussion&gt;A journaling file system is a file system that keeps track of the changes that will be made in a journal (usually a circular ...
    Rule Medium Severity
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  • SRG-NET-000512

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  • SRG-NET-000750

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  • The ALG providing user access control intermediary services must generate audit records when successful/unsuccessful attempts to access privileges occur.

    &lt;VulnDiscussion&gt;Without generating audit records that are specific to the security and mission needs of the organization, it would be difficu...
    Rule Medium Severity
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  • SRG-NET-000514

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  • The ALG must be configured in accordance with the security configuration settings based on DoD security policy and technology-specific security best practices.

    &lt;VulnDiscussion&gt;Configuring the network element to implement organization-wide security implementation guides and security checklists ensures...
    Rule Medium Severity
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  • SRG-NET-000512

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  • The ALG that provides intermediary services for SMTP must inspect inbound and outbound SMTP and Extended SMTP communications traffic for protocol compliance and protocol anomalies.

    &lt;VulnDiscussion&gt;Application protocol anomaly detection examines application layer protocols such as SMTP to identify attacks based on observe...
    Rule Medium Severity
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  • SRG-NET-000512

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  • The ALG that intermediary services for FTP must inspect inbound and outbound FTP communications traffic for protocol compliance and protocol anomalies.

    &lt;VulnDiscussion&gt;Application protocol anomaly detection examines application layer protocols such as FTP to identify attacks based on observed...
    Rule Medium Severity
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  • SRG-NET-000512

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  • The ALG that provides intermediary services for HTTP must inspect inbound and outbound HTTP traffic for protocol compliance and protocol anomalies.

    &lt;VulnDiscussion&gt;Application protocol anomaly detection examines application layer protocols such as HTTP to identify attacks based on observe...
    Rule Medium Severity
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  • SRG-NET-000513

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  • The ALG providing user access control intermediary services must initiate a session lock after a 15-minute period of inactivity.

    &lt;VulnDiscussion&gt;A session time-out lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinit...
    Rule Medium Severity
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  • SRG-NET-000515

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  • The ALG providing user access control intermediary services must provide the capability for users to directly initiate a session lock.

    &lt;VulnDiscussion&gt;A session lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the ...
    Rule Medium Severity
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  • SRG-NET-000516

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  • The ALG providing user access control intermediary services must retain the session lock until the user reestablishes access using established identification and authentication procedures.

    &lt;VulnDiscussion&gt;A session lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the ...
    Rule Medium Severity
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  • SRG-NET-000517

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  • The ALG providing user access control intermediary services must automatically terminate a user session when organization-defined conditions or trigger events that require a session disconnect occur.

    &lt;VulnDiscussion&gt;Automatic session termination addresses the termination of user-initiated logical sessions in contrast to the termination of ...
    Rule Medium Severity
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  • SRG-NET-000518

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  • The ALG providing user access control intermediary services must provide a logoff capability for user-initiated communications sessions.

    &lt;VulnDiscussion&gt;If a user cannot explicitly end a session, the session may remain open and be exploited by an attacker. However, for some ty...
    Rule Medium Severity
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  • SRG-NET-000519

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  • The ALG providing user access control intermediary services must display an explicit logoff message to users indicating the reliable termination of authenticated communications sessions.

    &lt;VulnDiscussion&gt;If a user cannot explicitly end a session, the session may remain open and be exploited by an attacker; this is referred to a...
    Rule Medium Severity
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  • SRG-NET-000521

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  • The ALG providing user access control intermediary services must conceal, via the session lock, information previously visible on the display with a publicly viewable image.

    &lt;VulnDiscussion&gt;A session time-out lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinit...
    Rule Medium Severity
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  • SRG-NET-000700

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  • The ALG must prevent or restrict changes to the configuration of the system under organization-defined circumstances.

    &lt;VulnDiscussion&gt;System configuration changes can adversely affect critical system security and privacy functionality. Change restrictions can...
    Rule Medium Severity
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  • SRG-NET-000705

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  • The ALG must employ organization-defined controls by type of denial of service (DoS) to achieve the DoS objective.

    &lt;VulnDiscussion&gt;DoS events can occur due to a variety of internal and external causes, such as an attack by an adversary or a lack of plannin...
    Rule Medium Severity
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  • SRG-NET-000715

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  • The ALG must implement physically or logically separate subnetworks to isolate organization-defined critical system components and functions.

    &lt;VulnDiscussion&gt;Separating critical system components and functions from other noncritical system components and functions through separate s...
    Rule Medium Severity
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  • SRG-NET-000735

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  • The ALG must include only approved trust anchors in trust stores or certificate stores managed by the organization.

    &lt;VulnDiscussion&gt;Public key infrastructure (PKI) certificates are certificates with visibility external to organizational systems and certific...
    Rule Medium Severity
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