II - Mission Support Classified
Rules and Groups employed by this XCCDF Profile
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SRG-OS-000477-GPOS-00222
Group -
The Ubuntu operating system must generate audit records when successful/unsuccessful attempts to use the fdisk command.
Without generating audit records that are specific to the security and mission needs of the organization, it would be difficult to establish, correlate, and investigate the events relating to an in...Rule Medium Severity -
SRG-OS-000027-GPOS-00008
Group -
The Ubuntu operating system must limit the number of concurrent sessions to ten for all accounts and/or account types.
Ubuntu operating system management includes the ability to control the number of users and user sessions that utilize an operating system. Limiting the number of allowed users and sessions per user...Rule Low Severity -
SRG-OS-000028-GPOS-00009
Group -
The Ubuntu operating system must retain a users session lock until that user reestablishes access using established identification and authentication procedures.
A session lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system but does not want to log out because of the temporary...Rule Medium Severity -
SRG-OS-000029-GPOS-00010
Group -
The Ubuntu operating system must initiate a session lock after a 15-minute period of inactivity for all connection types.
A session time-out lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system but does not log out because of the temporar...Rule Medium Severity -
SRG-OS-000030-GPOS-00011
Group -
The Ubuntu operating system must be configured for users to directly initiate a session lock for all connection types.
A session lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system but does not want to log out because of the temporary...Rule Medium Severity -
SRG-OS-000032-GPOS-00013
Group -
The Ubuntu operating system must monitor remote access methods.
Remote access services, such as those providing remote access to network devices and information systems, which lack automated monitoring capabilities, increase risk and make remote user access man...Rule Medium Severity -
SRG-OS-000033-GPOS-00014
Group -
The Ubuntu operating system must implement DoD-approved encryption to protect the confidentiality of remote access sessions.
Without confidentiality protection mechanisms, unauthorized individuals may gain access to sensitive information via a remote access session. Remote access is access to DoD nonpublic information s...Rule Medium Severity -
SRG-OS-000112-GPOS-00057
Group -
The Ubuntu operating system must enforce SSHv2 for network access to all accounts.
A replay attack may enable an unauthorized user to gain access to the operating system. Authentication sessions between the authenticator and the operating system validating the user credentials mu...Rule High Severity -
SRG-OS-000125-GPOS-00065
Group -
The Ubuntu operating system must use strong authenticators in establishing nonlocal maintenance and diagnostic sessions.
Nonlocal maintenance and diagnostic activities are those activities conducted by individuals communicating through a network, either an external network (e.g., the Internet) or an internal network....Rule Medium Severity -
SRG-OS-000126-GPOS-00066
Group -
The Ubuntu operating system must immediately terminate all network connections associated with SSH traffic after a period of inactivity.
Automatic session termination addresses the termination of user-initiated logical sessions in contrast to the termination of network connections that are associated with communications sessions (i....Rule Medium Severity
Node 2
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