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Application Layer Gateway (ALG) Security Requirements Guide (SRG)

Rules, Groups, and Values defined within the XCCDF Benchmark

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

    <VulnDiscussion>Without generating audit records that are specific to the security and mission needs of the organization, it would be difficu...
    Rule Medium Severity
    Show

  • SRG-NET-000495-ALG-000030

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ALG providing user access control intermediary services must generate audit records when successful/unsuccessful attempts to modify 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
    Show

  • SRG-NET-000496-ALG-000031

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ALG must generate audit records when successful/unsuccessful attempts to modify security objects 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
    Show

  • SRG-NET-000497-ALG-000032

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ALG must generate audit records when successful/unsuccessful attempts to modify security 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
    Show

  • SRG-NET-000498-ALG-000033

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ALG must generate audit records when successful/unsuccessful attempts to modify 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
    Show

  • SRG-NET-000499-ALG-000034

    <GroupDescription></GroupDescription>
    Group
    Show

  • SRG-NET-000103-ALG-000061

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ALG must produce audit records containing information to establish the source of the events.

    &lt;VulnDiscussion&gt;Without establishing the source of the event, it is impossible to establish, correlate, and investigate the events leading up...
    Rule Medium Severity
    Show

  • The ALG must generate audit records when successful/unsuccessful attempts to delete security 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
    Show

  • SRG-NET-000503-ALG-000038

    <GroupDescription></GroupDescription>
    Group
    Show

  • 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
    Show

  • SRG-NET-000074-ALG-000043

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ALG must produce audit records containing information to establish what type of events occurred.

    &lt;VulnDiscussion&gt;Without establishing what type of event occurred, it would be difficult to establish, correlate, and investigate the events l...
    Rule Medium Severity
    Show

  • SRG-NET-000075-ALG-000044

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ALG must produce audit records containing information to establish when (date and time) the events occurred.

    &lt;VulnDiscussion&gt;Without establishing when events occurred, it is impossible to establish, correlate, and investigate the events leading up to...
    Rule Medium Severity
    Show

  • SRG-NET-000076-ALG-000045

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ALG must produce audit records containing information to establish where the events occurred.

    &lt;VulnDiscussion&gt;Without establishing where events occurred, it is impossible to establish, correlate, and investigate the events leading up t...
    Rule Medium Severity
    Show

  • SRG-NET-000077-ALG-000046

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ALG must produce audit records containing information to establish the outcome of the events.

    &lt;VulnDiscussion&gt;Without information about the outcome of events, security personnel cannot make an accurate assessment as to whether an attac...
    Rule Medium Severity
    Show

  • SRG-NET-000079-ALG-000048

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ALG must generate audit records containing information to establish the identity of any individual or process associated with the event.

    &lt;VulnDiscussion&gt;Without information that establishes the identity of the subjects (i.e., users or processes acting on behalf of users) associ...
    Rule Medium Severity
    Show

  • SRG-NET-000333-ALG-000049

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ALG must be configured to support centralized management and configuration.

    &lt;VulnDiscussion&gt;Without the ability to centrally manage the content captured in the audit records, identification, troubleshooting, and corre...
    Rule Medium Severity
    Show

  • SRG-NET-000334-ALG-000050

    <GroupDescription></GroupDescription>
    Group
    Show

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

    &lt;VulnDiscussion&gt;Information stored in one location is vulnerable to accidental or incidental deletion or alteration. Off-loading is a common...
    Rule Medium Severity
    Show

  • SRG-NET-000511-ALG-000051

    <GroupDescription></GroupDescription>
    Group
    Show

  • 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
    Show

  • SRG-NET-000511-ALG-000052

    <GroupDescription></GroupDescription>
    Group
    Show

  • 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
    Show

  • SRG-NET-000335-ALG-000053

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ALG must provide an immediate real-time alert to, at a minimum, the SCA and ISSO, of all audit failure events where the detection and/or prevention function is unable to write events to either local storage or the centralized server.

    &lt;VulnDiscussion&gt;Without a real-time alert, security personnel may be unaware of an impending failure of the audit capability and system opera...
    Rule Medium Severity
    Show

  • SRG-NET-000088-ALG-000054

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ALG must send an alert to, at a minimum, the ISSO and SCA when an audit processing failure occurs.

    &lt;VulnDiscussion&gt;It is critical for the appropriate personnel to be aware if a system is at risk of failing to process audit logs as required....
    Rule Medium Severity
    Show

  • SRG-NET-000089-ALG-000055

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ALG must shut down by default upon audit failure (unless availability is an overriding concern).

    &lt;VulnDiscussion&gt;It is critical that when the network element is at risk of failing to process audit logs as required, it take action to mitig...
    Rule Medium Severity
    Show

  • SRG-NET-000098-ALG-000056

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ALG must protect audit information from unauthorized read access.

    &lt;VulnDiscussion&gt;Auditing and logging are key components of any security architecture. Logging the actions of specific events provides a means...
    Rule Medium Severity
    Show

  • SRG-NET-000099-ALG-000057

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ALG must protect audit information from unauthorized modification.

    &lt;VulnDiscussion&gt;If audit data were to become compromised, then forensic analysis and discovery of the true source of potentially malicious sy...
    Rule Medium Severity
    Show

  • SRG-NET-000100-ALG-000058

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ALG must protect audit information from unauthorized deletion.

    &lt;VulnDiscussion&gt;If audit data were to become compromised, then forensic analysis and discovery of the true source of potentially malicious sy...
    Rule Medium Severity
    Show

  • SRG-NET-000101-ALG-000059

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ALG must protect audit tools from unauthorized access.

    &lt;VulnDiscussion&gt;Protecting audit data also includes identifying and protecting the tools used to view and manipulate log data. Therefore, pro...
    Rule Medium Severity
    Show

  • SRG-NET-000102-ALG-000060

    <GroupDescription></GroupDescription>
    Group
    Show

  • The ALG must protect audit tools from unauthorized modification.

    &lt;VulnDiscussion&gt;Protecting audit data also includes identifying and protecting the tools used to view and manipulate log data. Therefore, pro...
    Rule Medium Severity
    Show

  • The ALG must protect audit tools from unauthorized deletion.

    &lt;VulnDiscussion&gt;Protecting audit data also includes identifying and protecting the tools used to view and manipulate log data. Therefore, pro...
    Rule Medium Severity
    Show

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