II - Mission Support Public
Rules and Groups employed by this XCCDF Profile
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Exch-2-833
Group -
Audit record parameters must be set.
Log files help establish a history of activities, and can be useful in detecting attack attempts. This item declares the fields that must be available in the audit log file in order to adequately...Rule Low Severity -
Exch-2-839
Group -
Audit data must be on separate partitions.
Log files help establish a history of activities, and can be useful in detecting attack attempts or determining tuning adjustments to improve availability. Audit log content must always be consid...Rule Medium Severity -
Exch-2-842
Group -
Queue monitoring must be configured with threshold and action.
Monitors are automated “process watchers” that respond to performance changes, and can be useful in detecting outages and alerting administrators where attention is needed. Exchange has built-in mo...Rule Medium Severity -
Exch-3-003
Group -
Email software must be monitored for change on INFOCON frequency schedule.
The INFOCON system provides a framework within which the Commander USSTRATCOM regional commanders, service chiefs, base/post/camp/station/vessel commanders, or agency directors can increase the mea...Rule Medium Severity -
Exch-3-006
Group -
Exchange software baseline copy must exist.
Exchange software, as with other application software installed on a host system, must be included in a system baseline record and periodically reviewed; otherwise unauthorized changes to the soft...Rule Medium Severity -
Exch-3-804
Group -
Services must be documented and unnecessary services must be removed or disabled.
Unneeded, but running, services offer attackers an enhanced attack profile, and attackers are constantly watching to discover open ports with running services. By analyzing and disabling unneeded...Rule Medium Severity -
Exch-2-011
Group -
Global inbound message size must be controlled.
Email system availability depends in part on best practices strategies for setting tuning configurations. Message size limits should be set to 10 megabytes at most, but often are smaller, depending...Rule Low Severity -
Exch-3-807
Group -
Email application must not share a partition with another application.
In the same way that added security layers can provide a cumulative positive effect on security posture, multiple applications can provide a cumulative negative effect. A vulnerability and subseque...Rule Medium Severity -
Exch-2-014
Group -
Servers must use approved DoD certificates.
Server certificates are required for many security features in Exchange; without them the server cannot engage in many forms of secure communication. Failure to implement valid certificates makes ...Rule Medium Severity -
Exch-2-015
Group -
Global outbound message size must be controlled.
Email system availability depends in part on best practices strategies for setting tuning configurations. Message size limits should be set to 10 megabytes at most, but often are smaller, depending...Rule Low Severity -
Exch-3-814
Group -
The current, approved service pack must be installed.
Failure to install the most current Exchange service pack leaves a system vulnerable to exploitation. Current service packs correct known security and system vulnerabilities.Rule Medium Severity -
Exch-2-017
Group -
Global recipient count limit must be set.
Email system availability depends in part on best practices strategies for setting tuning configurations. The Global Recipient Count limit field is used to control the maximum number of recipients ...Rule Low Severity -
Exch-2-019
Group -
Local machine policy must require signed scripts.
Scripts often provide a way for attackers to infiltrate a system, especially those downloaded from untrusted locations. By setting machine policy to prevent unauthorized script executions, unanti...Rule Medium Severity -
Exch-2-200
Group -
SMTP automated banner response must not reveal server details.
Automated connection responses occur as a result of FTP or Telnet connections, when connecting to those services. They report a successful connection by greeting the connecting client, stating the ...Rule Medium Severity -
Exch-2-201
Group -
Outbound Connection Limit per Domain Count must be controlled.
Email system availability depends in part on best practices strategies for setting tuning configurations. This configuration controls the maximum number of simultaneous outbound connections from a ...Rule Low Severity -
Exch-2-769
Group -
Outbound Connection Timeout must be 10 or less.
Email system availability depends in part on best practices strategies for setting tuning configurations. This configuration controls the number of idle minutes before the connection is dropped. It...Rule Low Severity -
Exch-2-768
Group -
Internal Send Connectors must use an authentication level
The Simple Mail Transfer Protocol (SMTP) connector is used by Exchange to send and receive messages from server to server. There are several controls that work together to provide security between ...Rule Medium Severity -
Exch-2-705
Group -
Message size restrictions must be controlled on Receive connectors.
Email system availability depends in part on best practices strategies for setting tuning configurations. For message size restrictions, multiple places exist to set or override inbound or outbound...Rule Low Severity
Node 2
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