Guide to the Secure Configuration of Red Hat Enterprise Linux 8
Rules, Groups, and Values defined within the XCCDF Benchmark
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Install the Samba Common Package
The <code>samba-common</code> package should be installed. The <code>samba-common</code> package can be installed with the following command: <pre>...Rule Medium Severity -
Require Client SMB Packet Signing, if using mount.cifs
Require packet signing of clients who mount Samba shares using the <code>mount.cifs</code> program (e.g., those who specify shares in <code>/etc/fs...Rule Unknown Severity -
Require Client SMB Packet Signing, if using smbclient
To require samba clients running <code>smbclient</code> to use packet signing, add the following to the <code>[global]</code> section of the Samba ...Rule Unknown Severity -
Disable Root Access to SMB Shares
Administrators should not use administrator accounts to access Samba file and printer shares. Disable the root user and the wheel administrator gro...Rule Unknown Severity -
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 -
Uninstall net-snmp Package
The <code>net-snmp</code> package provides the snmpd service. The <code>net-snmp</code> package can be removed with the following command: <pre> $...Rule Unknown Severity -
Disable snmpd Service
Thesnmpdservice can be disabled with the following command:$ sudo systemctl mask --now snmpd.service
Rule Low Severity -
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 -
Ensure SNMP Read Write is disabled
Edit <code>/etc/snmp/snmpd.conf</code>, remove any <code>rwuser</code> entries. Once the read write users have been removed, restart the SNMP servi...Rule Medium Severity -
Ensure Default SNMP Password Is Not Used
Edit <code>/etc/snmp/snmpd.conf</code>, remove or change the default community strings of <code>public</code> and <code>private</code>. This profil...Rule High Severity -
Configure SNMP Service to Use Only SNMPv3 or Newer
Edit <code>/etc/snmp/snmpd.conf</code>, removing any references to <code>rocommunity</code>, <code>rwcommunity</code>, or <code>com2sec</code>. Upo...Rule Medium Severity -
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
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