DRAFT - Unclassified Information in Non-federal Information Systems and Organizations (NIST 800-171)
Rules and Groups employed by this XCCDF Profile
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Enable the File Access Policy Service
The File Access Policy service should be enabled. Thefapolicyd
service can be enabled with the following command:$ sudo systemctl enable fapolicyd.service
Rule Medium Severity -
Network Time Protocol
The Network Time Protocol is used to manage the system clock over a network. Computer clocks are not very accurate, so time will drift unpredictably on unmanaged systems. Central time protocols can...Group -
The Chrony package is installed
System time should be synchronized between all systems in an environment. This is typically done by establishing an authoritative time server or set of servers and having all systems synchronize th...Rule Medium Severity -
Disable chrony daemon from acting as server
The <code>port</code> option in <code>/etc/chrony.conf</code> can be set to <code>0</code> to make chrony daemon to never open any listening port for server operation and to operate strictly in a c...Rule Low Severity -
SSH Server
The SSH protocol is recommended for remote login and remote file transfer. SSH provides confidentiality and integrity for data exchanged between two systems, as well as server authentication, throu...Group -
Install OpenSSH client software
Theopenssh-clients
package can be installed with the following command:$ sudo yum install openssh-clients
Rule Medium Severity -
Install the OpenSSH Server Package
Theopenssh-server
package should be installed. Theopenssh-server
package can be installed with the following command:$ sudo yum install openssh-server
Rule Medium Severity -
Configure OpenSSH Client if Necessary
The following configuration changes apply to the SSH client. They can improve security parameters relwevant to the client user, e.g. increasing entropy while generating initialization vectors. Note...Group -
Configure session renegotiation for SSH client
The <code>RekeyLimit</code> parameter specifies how often the session key is renegotiated, both in terms of amount of data that may be transmitted and the time elapsed. To decrease the default limi...Rule Medium Severity -
Configure OpenSSH Server if Necessary
If the system needs to act as an SSH server, then certain changes should be made to the OpenSSH daemon configuration file <code>/etc/ssh/sshd_config</code>. The following recommendations can be app...Group
Node 2
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