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Guide to the Secure Configuration of Fedora

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Install the cron service

    The Cron service should be installed.
    Rule Medium Severity
  • Enable cron Service

    The <code>crond</code> service is used to execute commands at preconfigured times. It is required by almost all systems to perform necessary mainte...
    Rule Medium Severity
  • Enable cron Service

    The <code>crond</code> service is used to execute commands at preconfigured times. It is required by almost all systems to perform necessary mainte...
    Rule Medium Severity
  • Disable At Service (atd)

    The <code>at</code> and <code>batch</code> commands can be used to schedule tasks that are meant to be executed only once. This allows delayed exec...
    Rule Medium Severity
  • Disable anacron Service

    The <code>cronie-anacron</code> package, which provides <code>anacron</code> functionality, is installed by default. The <code>cronie-anacron</cod...
    Rule Unknown Severity
  • Verify Group Who Owns cron.d

    To properly set the group owner of /etc/cron.d, run the command:
    $ sudo chgrp root /etc/cron.d
    Rule Medium Severity
  • LDAP

    LDAP is a popular directory service, that is, a standardized way of looking up information from a central database. Fedora includes software that e...
    Group
  • Verify Group Who Owns cron.daily

    To properly set the group owner of /etc/cron.daily, run the command:
    $ sudo chgrp root /etc/cron.daily
    Rule Medium Severity
  • Kerberos

    The Kerberos protocol is used for authentication across non-secure network. Authentication can happen between various types of principals -- users,...
    Group
  • Uninstall the inet-based telnet server

    The inet-based telnet daemon should be uninstalled.
    Rule High Severity
  • Verify Group Who Owns cron.hourly

    To properly set the group owner of /etc/cron.hourly, run the command:
    $ sudo chgrp root /etc/cron.hourly
    Rule Medium Severity
  • Verify Group Who Owns cron.monthly

    To properly set the group owner of /etc/cron.monthly, run the command:
    $ sudo chgrp root /etc/cron.monthly
    Rule Medium Severity
  • Verify Group Who Owns cron.weekly

    To properly set the group owner of /etc/cron.weekly, run the command:
    $ sudo chgrp root /etc/cron.weekly
    Rule Medium Severity
  • Verify Group Who Owns Crontab

    To properly set the group owner of /etc/crontab, run the command:
    $ sudo chgrp root /etc/crontab
    Rule Medium Severity
  • Verify Owner on cron.d

    To properly set the owner of /etc/cron.d, run the command:
    $ sudo chown root /etc/cron.d 
    Rule Medium Severity
  • Verify Owner on cron.daily

    To properly set the owner of /etc/cron.daily, run the command:
    $ sudo chown root /etc/cron.daily 
    Rule Medium Severity
  • Verify Owner on cron.hourly

    To properly set the owner of /etc/cron.hourly, run the command:
    $ sudo chown root /etc/cron.hourly 
    Rule Medium Severity
  • Verify Owner on cron.monthly

    To properly set the owner of /etc/cron.monthly, run the command:
    $ sudo chown root /etc/cron.monthly 
    Rule Medium Severity
  • Verify Owner on cron.weekly

    To properly set the owner of /etc/cron.weekly, run the command:
    $ sudo chown root /etc/cron.weekly 
    Rule Medium Severity
  • Verify Owner on crontab

    To properly set the owner of /etc/crontab, run the command:
    $ sudo chown root /etc/crontab 
    Rule Medium Severity
  • Verify Permissions on cron.d

    To properly set the permissions of /etc/cron.d, run the command:
    $ sudo chmod 0700 /etc/cron.d
    Rule Medium Severity
  • Verify Permissions on cron.daily

    To properly set the permissions of /etc/cron.daily, run the command:
    $ sudo chmod 0700 /etc/cron.daily
    Rule Medium Severity
  • Verify Permissions on cron.hourly

    To properly set the permissions of /etc/cron.hourly, run the command:
    $ sudo chmod 0700 /etc/cron.hourly
    Rule Medium Severity
  • Verify Permissions on cron.monthly

    To properly set the permissions of /etc/cron.monthly, run the command:
    $ sudo chmod 0700 /etc/cron.monthly
    Rule Medium Severity
  • Verify Permissions on cron.weekly

    To properly set the permissions of /etc/cron.weekly, run the command:
    $ sudo chmod 0700 /etc/cron.weekly
    Rule Medium Severity
  • Verify Permissions on crontab

    To properly set the permissions of /etc/crontab, run the command:
    $ sudo chmod 0600 /etc/crontab
    Rule Medium Severity
  • Restrict at and cron to Authorized Users if Necessary

    The <code>/etc/cron.allow</code> and <code>/etc/at.allow</code> files contain lists of users who are allowed to use <code>cron</code> and at to del...
    Group
  • Ensure that /etc/at.deny does not exist

    The file /etc/at.deny should not exist. Use /etc/at.allow instead.
    Rule Medium Severity
  • Ensure that /etc/cron.deny does not exist

    The file /etc/cron.deny should not exist. Use /etc/cron.allow instead.
    Rule Medium Severity
  • Verify Group Who Owns /etc/at.allow file

    If <code>/etc/at.allow</code> exists, it must be group-owned by <code>root</code>. To properly set the group owner of <code>/etc/at.allow</code>, ...
    Rule Medium Severity
  • Verify Group Who Owns /etc/cron.allow file

    If <code>/etc/cron.allow</code> exists, it must be group-owned by <code>root</code>. To properly set the group owner of <code>/etc/cron.allow</cod...
    Rule Medium Severity
  • Verify User Who Owns /etc/at.allow file

    If <code>/etc/at.allow</code> exists, it must be owned by <code>root</code>. To properly set the owner of <code>/etc/at.allow</code>, run the comm...
    Rule Medium Severity
  • Verify User Who Owns /etc/cron.allow file

    If <code>/etc/cron.allow</code> exists, it must be owned by <code>root</code>. To properly set the owner of <code>/etc/cron.allow</code>, run the ...
    Rule Medium Severity
  • Verify Permissions on /etc/at.allow file

    If <code>/etc/at.allow</code> exists, it must have permissions <code>0640</code> or more restrictive. To properly set the permissions of <code>/e...
    Rule Medium Severity
  • Verify Permissions on /etc/cron.allow file

    If <code>/etc/cron.allow</code> exists, it must have permissions <code>0640</code> or more restrictive. To properly set the permissions of <code>...
    Rule Medium Severity
  • Deprecated services

    Some deprecated software services impact the overall system security due to their behavior (leak of confidentiality in network exchange, usage as u...
    Group
  • Uninstall the nis package

    The support for Yellowpages should not be installed unless it is required.
    Rule Low Severity
  • Uninstall the ntpdate package

    ntpdate is a historical ntp synchronization client for unixes. It sould be uninstalled.
    Rule Low Severity
  • Uninstall the ssl compliant telnet server

    The telnet daemon, even with ssl support, should be uninstalled.
    Rule High Severity
  • Uninstall the telnet server

    The telnet daemon should be uninstalled.
    Rule High Severity
  • DHCP

    The Dynamic Host Configuration Protocol (DHCP) allows systems to request and obtain an IP address and other configuration parameters from a server....
    Group
  • Configure DHCP Client if Necessary

    If DHCP must be used, then certain configuration changes can minimize the amount of information it receives and applies from the network, and thus ...
    Group
  • Minimize the DHCP-Configured Options

    Create the file <code>/etc/dhcp/dhclient.conf</code>, and add an appropriate setting for each of the ten configuration settings which can be obtain...
    Rule Unknown Severity
  • Configure DHCP Server

    If the system must act as a DHCP server, the configuration information it serves should be minimized. Also, support for other protocols and DNS-upd...
    Group
  • Minimize Served Information

    Edit /etc/dhcp/dhcpd.conf. Examine each address range section within the file, and ensure that the following options are not defined unless there i...
    Rule Unknown Severity
  • Disable DHCP Client

    DHCP is the default network configuration method provided by the system installer, and common on many networks. Nevertheless, manual management of ...
    Group
  • Disable DHCP Server

    The DHCP server <code>dhcpd</code> is not installed or activated by default. If the software was installed and activated, but the system does not n...
    Group
  • Uninstall DHCP Server Package

    If the system does not need to act as a DHCP server, the dhcp package can be uninstalled. The <code>dhcp</code> package can be removed with the fo...
    Rule Medium Severity
  • DNS Server

    Most organizations have an operational need to run at least one nameserver. However, there are many common attacks involving DNS server software, a...
    Group
  • Install vsftpd Package

    If this system must operate as an FTP server, install the <code>vsftpd</code> package via the standard channels. The <code>vsftpd</code> package ca...
    Rule Low Severity

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