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Intrusion Detection and Prevention Systems (IDPS) Security Requirements Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • SRG-NET-000019-IDPS-00019

    <GroupDescription></GroupDescription>
    Group
  • The IDPS must restrict or block harmful or suspicious communications traffic between interconnected networks based on attribute- and content-based inspection of the source, destination, headers, and/or content of the communications traffic.

    &lt;VulnDiscussion&gt;The IDPS enforces approved authorizations by controlling the flow of information between interconnected networks to prevent h...
    Rule Medium Severity
  • SRG-NET-000074-IDPS-00059

    <GroupDescription></GroupDescription>
    Group
  • The IDPS must produce audit records containing sufficient information to establish what type of event occurred, including, at a minimum, event descriptions, policy filter, rule or signature invoked, port, protocol, and criticality level/alert code or description.

    &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
  • SRG-NET-000075-IDPS-00060

    <GroupDescription></GroupDescription>
    Group
  • The IDPS must produce audit records containing information to establish when (date and time) the events occurred.

    &lt;VulnDiscussion&gt;Without establishing the time (date/time) an event occurred, it would be difficult to establish, correlate, and investigate t...
    Rule Medium Severity
  • SRG-NET-000076-IDPS-00061

    <GroupDescription></GroupDescription>
    Group
  • SRG-NET-000131-IDPS-00097

    <GroupDescription></GroupDescription>
    Group
  • The IDPS must produce audit records containing information to establish where the event was detected, including, at a minimum, network segment, destination address, and IDPS component which detected the event.

    &lt;VulnDiscussion&gt;Associating where the event was detected with the event log entries provides a means of investigating an attack or identifyin...
    Rule Medium Severity
  • SRG-NET-000077-IDPS-00062

    <GroupDescription></GroupDescription>
    Group
  • The IDPS must produce audit records containing information to establish the source of the event, including, at a minimum, originating source address.

    &lt;VulnDiscussion&gt;Associating the source of the event with detected events in the logs provides a means of investigating an attack or suspected...
    Rule Medium Severity
  • SRG-NET-000078-IDPS-00063

    <GroupDescription></GroupDescription>
    Group
  • The IDPS must produce audit records containing information to establish the outcome of events associated with detected harmful or potentially harmful traffic, including, at a minimum, capturing all associated communications traffic.

    &lt;VulnDiscussion&gt;Associating event outcome with detected events in the log provides a means of investigating an attack or suspected attack. W...
    Rule Medium Severity
  • SRG-NET-000089-IDPS-00069

    <GroupDescription></GroupDescription>
    Group
  • In the event of a logging failure caused by the lack of audit record storage capacity, the IDPS must continue generating and storing audit records if possible, overwriting the oldest audit records in a first-in-first-out manner.

    &lt;VulnDiscussion&gt;It is critical that when the IDPS is at risk of failing to process audit logs as required, it takes action to mitigate the fa...
    Rule Medium Severity
  • SRG-NET-000113-IDPS-00082

    <GroupDescription></GroupDescription>
    Group
  • The IDPS must provide audit record generation capability for events where communication traffic is blocked or restricted based on policy filters, rules, signatures, and anomaly analysis.

    &lt;VulnDiscussion&gt;Without the capability to generate audit records, it would be difficult to establish, correlate, and investigate the events r...
    Rule Medium Severity
  • SRG-NET-000511-IDPS-00012

    <GroupDescription></GroupDescription>
    Group
  • The IDPS must be configured to remove or disable non-essential features, functions, and services of the IDPS application.

    &lt;VulnDiscussion&gt;An IDPS can be capable of providing a wide variety of capabilities. Not all of these capabilities are necessary. Unnecessary ...
    Rule Medium Severity
  • SRG-NET-000192-IDPS-00140

    <GroupDescription></GroupDescription>
    Group
  • The IDPS must block outbound traffic containing known and unknown DoS attacks by ensuring that security policies, signatures, rules, and anomaly detection techniques are applied to outbound communications traffic.

    &lt;VulnDiscussion&gt;The IDPS must include protection against DoS attacks that originate from inside the enclave which can affect either internal ...
    Rule Medium Severity
  • SRG-NET-000229-IDPS-00163

    <GroupDescription></GroupDescription>
    Group
  • The IDPS must block any prohibited mobile code at the enclave boundary when it is detected.

    &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-000235-IDPS-00169

    <GroupDescription></GroupDescription>
    Group
  • The IDPS must fail to a secure state which maintains access control mechanisms when the IDPS hardware, software, or firmware fails on initialization/shutdown or experiences a sudden abort during normal operation.

    &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
  • SRG-NET-000236-IDPS-00170

    <GroupDescription></GroupDescription>
    Group
  • The IDPS must provide log information in a format that can be extracted and used by centralized analysis tools.

    &lt;VulnDiscussion&gt;Centralized review and analysis of log records from multiple IDPS components gives the organization the capability to better ...
    Rule Medium Severity
  • In the event of a failure of the IDPS function, the IDPS 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 address safety or security in accordance with the mission needs of the organization. Failure to a s...
    Rule Medium Severity
  • SRG-NET-000246-IDPS-00175

    <GroupDescription></GroupDescription>
    Group
  • The IDPS must verify the integrity of updates obtained directly from the vendor.

    &lt;VulnDiscussion&gt;If the integrity of updates downloaded directly from the vendor is not verified, then malicious code or errors may impact the...
    Rule Medium Severity
  • SRG-NET-000249-IDPS-00176

    <GroupDescription></GroupDescription>
    Group
  • The IDPS must block malicious code.

    &lt;VulnDiscussion&gt;Configuring the IDPS to delete and/or quarantine based on local organizational incident handling procedures minimizes the imp...
    Rule Medium Severity
  • SRG-NET-000273-IDPS-00198

    <GroupDescription></GroupDescription>
    Group
  • The IDPS must block outbound ICMP Destination Unreachable, Redirect, and Address Mask reply messages.

    &lt;VulnDiscussion&gt;Internet Control Message Protocol (ICMP) messages are used to provide feedback about problems in the network. These messages ...
    Rule Medium Severity
  • SRG-NET-000019-IDPS-00187

    <GroupDescription></GroupDescription>
    Group
  • SRG-NET-000512-IDPS-00194

    <GroupDescription></GroupDescription>
    Group
  • The IDPS must generate a log record when unauthorized network services are detected.

    &lt;VulnDiscussion&gt;Unauthorized or unapproved network services lack organizational verification or validation and therefore may be unreliable or...
    Rule Medium Severity
  • The IDPS must immediately use updates made to policy filters, rules, signatures, and anomaly analysis algorithms for traffic detection and prevention functions.

    &lt;VulnDiscussion&gt;Information flow policies regarding dynamic information flow control include, for example, allowing or disallowing informatio...
    Rule Medium Severity
  • SRG-NET-000113-IDPS-00013

    <GroupDescription></GroupDescription>
    Group
  • The IDPS must provide audit record generation capability for detection events based on implementation of policy filters, rules, signatures, and anomaly analysis.

    &lt;VulnDiscussion&gt;Without the capability to generate audit records, it would be difficult to establish, correlate, and investigate the events r...
    Rule Medium Severity
  • SRG-NET-000113-IDPS-00189

    <GroupDescription></GroupDescription>
    Group
  • The IDPS must provide audit record generation with a configurable severity and escalation level capability.

    &lt;VulnDiscussion&gt;Without the capability to generate audit records with a severity code it is difficult to track and handle detection events. ...
    Rule Medium Severity
  • SRG-NET-000333-IDPS-00190

    <GroupDescription></GroupDescription>
    Group
  • IDPS must support centralized management and configuration of the content captured in audit records generated by all IDPS components.

    &lt;VulnDiscussion&gt;Without the ability to centrally manage the content captured in the log records, identification, troubleshooting, and correla...
    Rule Medium Severity
  • SRG-NET-000334-IDPS-00191

    <GroupDescription></GroupDescription>
    Group
  • The IDPS must off-load log records to a centralized log server.

    &lt;VulnDiscussion&gt;Information stored in one location is vulnerable to accidental or incidental deletion or alteration. Off-loading ensures audi...
    Rule Medium Severity
  • SRG-NET-000385-IDPS-00211

    <GroupDescription></GroupDescription>
    Group
  • The IDPS must off-load log records to 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
  • SRG-NET-000335-IDPS-00223

    <GroupDescription></GroupDescription>
    Group
  • The IDPS must assign a critical severity level to all audit processing failures.

    &lt;VulnDiscussion&gt;It is critical that when the IDPS is at risk of failing to process audit logs as required, it takes action to mitigate the fa...
    Rule Medium Severity

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