Guide to the Secure Configuration of Red Hat Enterprise Linux CoreOS 4
Rules, Groups, and Values defined within the XCCDF Benchmark
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SSH is required to be installed
Specify if the Policy requires SSH to be installed. Used by SSH Rules to determine if SSH should be uninstalled or configured.<br> A value of 0 mea...Value -
Restrict Printer Sharing
By default, Samba utilizes the CUPS printing service to enable printer sharing with Microsoft Windows workstations. If there are no printers on the...Group -
Restrict SMB File Sharing to Configured Networks
Only users with local user accounts will be able to log in to Samba shares by default. Shares can be limited to particular users or network address...Group -
Disable Samba if Possible
Even after the Samba server package has been installed, it will remain disabled. Do not enable this service unless it is absolutely necessary to pr...Group -
SNMP Server
The Simple Network Management Protocol allows administrators to monitor the state of network devices, including computers. Older versions of SNMP w...Group -
Disable SNMP Server if Possible
The system includes an SNMP daemon that allows for its remote monitoring, though it not installed by default. If it was installed and activated but...Group -
Configure SNMP Server if Necessary
If it is necessary to run the snmpd agent on the system, some best practices should be followed to minimize the security risk from the installation...Group -
SNMP read-only community string
Specify the SNMP community string used for read-only access.Value -
SNMP read-write community string
Specify the SNMP community string used for read-write access.Value -
SSH Server
The SSH protocol is recommended for remote login and remote file transfer. SSH provides confidentiality and integrity for data exchanged between tw...Group -
SSH enabled firewalld zone
Specify firewalld zone to enable SSH service. This value is used only for remediation purposes.Value -
SSH Approved ciphers by FIPS
Specify the FIPS approved ciphers that are used for data integrity protection by the SSH server.Value -
SSH Approved MACs by FIPS
Specify the FIPS approved MACs (message authentication code) algorithms that are used for data integrity protection by the SSH server.Value -
SSH session Idle time
Specify duration of allowed idle time.Value -
SSH Strong KEX by FIPS
Specify the FIPS approved KEXs (Key Exchange Algorithms) algorithms that are used for methods in cryptography by which cryptographic keys are exch...Value -
SSH Max Sessions Count
Specify the maximum number of open sessions permitted.Value -
SSH Max Keep Alive Count
Specify the maximum number of idle message counts before session is terminated.Value -
Remove the OpenSSH Server Package
The <code>openssh-server</code> package should be removed. The <code>openssh-server</code> package can be removed with the following command: <pre>...Rule Medium Severity -
Disable SSH Server If Possible
Instead of using ssh to remotely log in to a cluster node, it is recommended to use <code>oc debug</code> The <code>sshd</code> service can be di...Rule High Severity -
Verify Group Who Owns SSH Server config file
To properly set the group owner of/etc/ssh/sshd_config
, run the command:$ sudo chgrp root /etc/ssh/sshd_config
Rule Medium Severity
Node 2
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