Guide to the Secure Configuration of Red Hat Enterprise Linux 7
Rules, Groups, and Values defined within the XCCDF Benchmark
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APT service configuration
The apt service manage the package management and update of the whole system. Its configuration need to be properly defined to ensure efficient sec...Group -
Avahi Server
The Avahi daemon implements the DNS Service Discovery and Multicast DNS protocols, which provide service and host discovery on a network. It allows...Group -
Configure Avahi if Necessary
If your system requires the Avahi daemon, its configuration can be restricted to improve security. The Avahi daemon configuration file is <code>/et...Group -
Check Avahi Responses' TTL Field
To make Avahi ignore packets unless the TTL field is 255, edit <code>/etc/avahi/avahi-daemon.conf</code> and ensure the following line appears in t...Rule Low Severity -
Disable Avahi Publishing
To prevent Avahi from publishing its records, edit <code>/etc/avahi/avahi-daemon.conf</code> and ensure the following line appears in the <code>[pu...Rule Low Severity -
Serve Avahi Only via Required Protocol
If you are using only IPv4, edit <code>/etc/avahi/avahi-daemon.conf</code> and ensure the following line exists in the <code>[server]</code> sectio...Rule Low Severity -
Prevent Other Programs from Using Avahi's Port
To prevent other mDNS stacks from running, edit <code>/etc/avahi/avahi-daemon.conf</code> and ensure the following line appears in the <code>[serve...Rule Medium Severity -
Disable Advanced Configuration and Power Interface (acpid)
The Advanced Configuration and Power Interface Daemon (<code>acpid</code>) dispatches ACPI events (such as power/reset button depressed) to userspa...Rule Medium Severity -
Restrict Information Published by Avahi
If it is necessary to publish some information to the network, it should not be joined by any extraneous information, or by information supplied by...Rule Low Severity -
Disable Avahi Server if Possible
Because the Avahi daemon service keeps an open network port, it is subject to network attacks. Disabling it can reduce the system's vulnerability t...Group -
Uninstall avahi-autoipd Server Package
If the system does not need to have an Avahi server which implements the DNS Service Discovery and Multicast DNS protocols, the avahi-autoipd and ...Rule Medium Severity -
Uninstall avahi Server Package
If the system does not need to have an Avahi server which implements the DNS Service Discovery and Multicast DNS protocols, the avahi-autoipd and a...Rule Medium Severity -
Disable Avahi Server Software
Theavahi-daemonservice can be disabled with the following command:$ sudo systemctl mask --now avahi-daemon.service
Rule Medium Severity -
Base Services
This section addresses the base services that are installed on a Red Hat Enterprise Linux 7 default installation which are not covered in other sec...Group -
Install the psacct package
The process accounting service, <code>psacct</code>, works with programs including <code>acct</code> and <code>ac</code> to allow system administra...Rule Low Severity -
Uninstall Automatic Bug Reporting Tool (abrt)
The Automatic Bug Reporting Tool (<code>abrt</code>) collects and reports crash data when an application crash is detected. Using a variety of plug...Rule Medium Severity -
Enable IRQ Balance (irqbalance)
The <code>irqbalance</code> service optimizes the balance between power savings and performance through distribution of hardware interrupts across ...Rule Low Severity -
Enable Process Accounting (psacct)
The process accounting service, <code>psacct</code>, works with programs including <code>acct</code> and <code>ac</code> to allow system administra...Rule Low Severity -
Disable Automatic Bug Reporting Tool (abrtd)
The Automatic Bug Reporting Tool (<code>abrtd</code>) daemon collects and reports crash data when an application crash is detected. Using a variety...Rule Medium Severity -
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 infrastructu...Rule Low Severity
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