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Remove Rsh Trust Files The files '/etc/hosts.equiv' and '~/.rhosts' (in each user's home directory) list remote hosts and users that are trusted by the local system when using the rshd daemon. To remove these files, run the following command to delete them from any location: '$ sudo rm /etc/hosts.equiv' '$ rm ~/.rhosts'

Disable ypbind Service The 'ypbind' service, which allows the system to act as a client in a NIS or NIS+ domain, should be disabled. The 'ypbind' service can be disabled with the following command: '$ sudo systemctl disable ypbind'

Disable tftp Service The 'tftp' service should be disabled. The 'tftp' service can be disabled with the following command: '$ sudo systemctl disable tftp'

Ensure tftp Daemon Uses Secure Mode If running the 'tftp' service is necessary, it should be configured to change its root directory at startup. To do so, ensure '/etc/xinetd.d/tftp' includes '-s' as a command line argument, as shown in the following example (which is also the default): 'server_args = -s /var/lib/tftpboot'

Disable Advanced Configuration and Power Interface (acpid) The Advanced Configuration and Power Interface Daemon ('acpid') dispatches ACPI events (such as power/reset button depressed) to userspace programs. The 'acpid' service can be disabled with the following command: '$ sudo systemctl disable acpid'

Disable Certmonger Service (certmonger) Certmonger is a D-Bus based service that attempts to simplify interaction with certifying authorities on networks which use public-key infrastructure. It is often combined with Red Hat's IPA (Identity Policy Audit) security information management solution to aid in the management of certificates. The 'certmonger' service can be disabled with the follow ...

Disable Control Group Config (cgconfig) Control groups allow an administrator to allocate system resources (such as CPU, memory, network bandwidth, etc) among a defined group (or groups) of processes executing on a system. The 'cgconfig' daemon starts at boot and establishes the predefined control groups. The 'cgconfig' service can be disabled with the following command: '$ sudo systemct ...

Disable Control Group Rules Engine (cgred) The 'cgred' service moves tasks into control groups according to parameters set in the '/etc/cgrules.conf' configuration file. The 'cgred' service can be disabled with the following command: '$ sudo systemctl disable cgred'

Disable CPU Speed (cpuspeed) The 'cpuspeed' service can adjust the clock speed of supported CPUs based upon the current processing load thereby conserving power and reducing heat. The 'cpuspeed' service can be disabled with the following command: '$ sudo systemctl disable cpuspeed'

Enable IRQ Balance (irqbalance) The 'irqbalance' service optimizes the balance between power savings and performance through distribution of hardware interrupts across multiple processors. The 'irqbalance' service can be enabled with the following command: '$ sudo systemctl enable irqbalance'


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