II - Mission Support Public
Rules and Groups employed by this XCCDF Profile
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SRG-NET-000091-IDPS-00193
<GroupDescription></GroupDescription>Group -
The IDPS must provide log information in a format that can be extracted and used by centralized analysis tools.
<VulnDiscussion>Centralized review and analysis of log records from multiple IDPS components gives the organization the capability to better ...Rule Medium Severity -
SRG-NET-000512-IDPS-00194
<GroupDescription></GroupDescription>Group -
The IDPS must be configured in accordance with the security configuration settings based on DoD security policy and technology-specific security best practices.
<VulnDiscussion>Configuring the IDPS to implement organization-wide security implementation guides and security checklists ensures compliance...Rule Medium Severity -
SRG-NET-000131-IDPS-00011
<GroupDescription></GroupDescription>Group -
The IDPS must be configured to remove or disable non-essential capabilities which are not required for operation or not related to IDPS functionality (e.g., DNS, email client or server, FTP server, or web server).
<VulnDiscussion>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-000132-IDPS-00195
<GroupDescription></GroupDescription>Group -
The IDPS must be configured to prohibit or restrict the use of functions, ports, protocols, and/or services, as defined in the PPSM CAL and vulnerability assessments.
<VulnDiscussion>Some ports, protocols, or services have known exploits or security weaknesses. These ports, protocols, and services must be p...Rule Medium Severity -
SRG-NET-000228-IDPS-00196
<GroupDescription></GroupDescription>Group -
The IDPS must detect, at a minimum, mobile code that is unsigned or exhibiting unusual behavior, has not undergone a risk assessment, or is prohibited for use based on a risk assessment.
<VulnDiscussion>Mobile code is defined as software modules obtained from remote systems, transferred across a network, and then downloaded an...Rule Medium Severity -
SRG-NET-000362-IDPS-00196
<GroupDescription></GroupDescription>Group -
The IDPS must protect against or limit the effects of known and unknown types of Denial of Service (DoS) attacks by employing rate-based attack prevention behavior analysis.
<VulnDiscussion>If the network does not provide safeguards against DoS attack, network resources will be unavailable to users. Installation ...Rule Medium Severity -
SRG-NET-000362-IDPS-00197
<GroupDescription></GroupDescription>Group -
The IDPS must protect against or limit the effects of known and unknown types of Denial of Service (DoS) attacks by employing anomaly-based attack detection.
<VulnDiscussion>If the network does not provide safeguards against DoS attack, network resources will be unavailable to users. Installation ...Rule Medium Severity -
SRG-NET-000362-IDPS-00198
<GroupDescription></GroupDescription>Group -
The IDPS must protect against or limit the effects of known types of Denial of Service (DoS) attacks by employing signatures.
<VulnDiscussion>If the network does not provide safeguards against DoS attack, network resources will be unavailable to users. Installation...Rule Medium Severity -
SRG-NET-000401-IDPS-00203
<GroupDescription></GroupDescription>Group -
The IDPS must, for fragmented packets, either block the packets or properly reassemble the packets before inspecting and forwarding.
<VulnDiscussion>Packet fragmentation is allowed by the TCP/IP specifications and is encouraged in situations where it is needed. However, pac...Rule Medium Severity -
SRG-NET-000273-IDPS-00204
<GroupDescription></GroupDescription>Group -
The IDPS must block malicious ICMP packets by properly configuring ICMP signatures and rules.
<VulnDiscussion>Internet Control Message Protocol (ICMP) messages are used to provide feedback about problems in the network. These messages ...Rule Medium Severity -
SRG-NET-000246-IDPS-00205
<GroupDescription></GroupDescription>Group -
The IDPS must install updates for application software files, signature definitions, detection heuristics, and vendor-provided rules when new releases are available in accordance with organizational configuration management policy and procedures.
<VulnDiscussion>Failing to update malicious code protection mechanisms, including application software files, signature definitions, and vend...Rule Medium Severity -
SRG-NET-000248-IDPS-00206
<GroupDescription></GroupDescription>Group -
The IDPS must perform real-time monitoring of files from external sources at network entry/exit points.
<VulnDiscussion>Real-time monitoring of files from external sources at network entry/exit points helps to detect covert malicious code before...Rule Medium Severity -
SRG-NET-000249-IDPS-00221
<GroupDescription></GroupDescription>Group -
The IDPS must quarantine and/or delete malicious code.
<VulnDiscussion>Configuring the network element to delete and/or quarantine based on local organizational incident handling procedures minimi...Rule Medium Severity -
SRG-NET-000249-IDPS-00222
<GroupDescription></GroupDescription>Group -
The IDPS must send an immediate (within seconds) alert to, at a minimum, the system administrator when malicious code is detected.
<VulnDiscussion>Without an alert, security personnel may be unaware of an impending failure of the audit capability, and the ability to perfo...Rule Medium Severity -
SRG-NET-000383-IDPS-00208
<GroupDescription></GroupDescription>Group -
IDPS components, including sensors, event databases, and management consoles must integrate with a network-wide monitoring capability.
<VulnDiscussion>An integrated, network-wide intrusion detection capability increases the ability to detect and prevent sophisticated distribu...Rule Medium Severity -
SRG-NET-000384-IDPS-00209
<GroupDescription></GroupDescription>Group -
The IDPS must detect network services that have not been authorized or approved by the ISSO or ISSM, at a minimum.
<VulnDiscussion>Unauthorized or unapproved network services lack organizational verification or validation and therefore may be unreliable or...Rule Medium Severity -
SRG-NET-000385-IDPS-00210
<GroupDescription></GroupDescription>Group -
The IDPS must generate a log record when unauthorized network services are detected.
<VulnDiscussion>Unauthorized or unapproved network services lack organizational verification or validation and therefore may be unreliable or...Rule Medium Severity -
SRG-NET-000385-IDPS-00211
<GroupDescription></GroupDescription>Group -
The IDPS must generate an alert to the ISSM and ISSO, at a minimum, when unauthorized network services are detected.
<VulnDiscussion>Unauthorized or unapproved network services lack organizational verification or validation and therefore may be unreliable or...Rule Medium Severity -
SRG-NET-000390-IDPS-00212
<GroupDescription></GroupDescription>Group -
The IDPS must continuously monitor inbound communications traffic for unusual/unauthorized activities or conditions.
<VulnDiscussion>If inbound communications traffic is not continuously monitored for unusual/unauthorized activities or conditions, there will...Rule Medium Severity -
SRG-NET-000391-IDPS-00213
<GroupDescription></GroupDescription>Group -
The IDPS must continuously monitor outbound communications traffic for unusual/unauthorized activities or conditions.
<VulnDiscussion>If outbound communications traffic is not continuously monitored for unusual/unauthorized activities or conditions, there wil...Rule Medium Severity -
SRG-NET-000392-IDPS-00214
<GroupDescription></GroupDescription>Group -
The IDSP must send an alert to, at a minimum, the ISSM and ISSO when intrusion detection events are detected which indicate a compromise or potential for compromise.
<VulnDiscussion>Without an alert, security personnel may be unaware of intrusion detection incidents that require immediate action and this d...Rule Medium Severity -
SRG-NET-000392-IDPS-00215
<GroupDescription></GroupDescription>Group -
The IDPS must send an alert to, at a minimum, the ISSM and ISSO when threats identified by authoritative sources (e.g., IAVMs or CTOs) are detected which indicate a compromise or potential for compromise.
<VulnDiscussion>Without an alert, security personnel may be unaware of an impending failure of the audit capability, and the ability to perfo...Rule Medium Severity -
SRG-NET-000392-IDPS-00216
<GroupDescription></GroupDescription>Group -
The IDPS must generate an alert to, at a minimum, the ISSM and ISSO when root level intrusion events which provide unauthorized privileged access are detected.
<VulnDiscussion>Without an alert, security personnel may be unaware of major detection incidents that require immediate action and this delay...Rule Medium Severity -
wFSRG-NET-000392-IDPS-00217
<GroupDescription></GroupDescription>Group -
The IDPS must send an alert to, at a minimum, the ISSM and ISSO when user level intrusions which provide non-privileged access are detected.
<VulnDiscussion>Without an alert, security personnel may be unaware of major detection incidents that require immediate action and this delay...Rule Medium Severity -
SRG-NET-000392-IDPS-00218
<GroupDescription></GroupDescription>Group -
The IDPS must send an alert to, at a minimum, the ISSM and ISSO when denial of service incidents are detected.
<VulnDiscussion>Without an alert, security personnel may be unaware of major detection incidents that require immediate action and this delay...Rule Medium Severity
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