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Guide to the Secure Configuration of Fedora

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Disable DNS Server

    DNS software should be disabled on any systems which does not need to be a nameserver. Note that the BIND DNS server software is not installed on F...
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  • Uninstall bind Package

    The <code>named</code> service is provided by the <code>bind</code> package. The <code>bind</code> package can be removed with the following comman...
    Rule Low Severity
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  • Isolate DNS from Other Services

    This section discusses mechanisms for preventing the DNS server from interfering with other services. This is done both to protect the remainder of...
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  • Run DNS Software in a chroot Jail

    Install the <code>bind-chroot</code> package: <pre>$ sudo yum install bind-chroot</pre> Place a valid named.conf file inside the chroot jail: <pre>...
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  • Run DNS Software on Dedicated Servers

    Since DNS is a high-risk service which must frequently be made available to the entire Internet, it is strongly recommended that no other services ...
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  • Protect DNS Data from Tampering or Attack

    This section discusses DNS configuration options which make it more difficult for attackers to gain access to private DNS data or to modify DNS data.
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  • Use Views to Partition External and Internal Information

    If it is not possible to run external and internal nameservers on separate physical systems, run BIND9 and simulate this feature using views. Edit ...
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  • Run Separate DNS Servers for External and Internal Queries

    Is it possible to run external and internal nameservers on separate systems? If so, follow the configuration guidance in this section. On the exter...
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  • Docker Service

    The docker service is necessary to create containers, which are self-sufficient and self-contained applications using the resource isolation fe...
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  • Application Whitelisting Daemon

    Fapolicyd (File Access Policy Daemon) implements application whitelisting to decide file access rights. Applications that are known via a reputatio...
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  • Install fapolicyd Package

    The fapolicyd package can be installed with the following command: 
    $ sudo dnf install fapolicyd
    Rule Medium Severity
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  • fapolicyd Must be Configured to Limit Access to Users Home Folders

    fapolicyd needs be configured so that users cannot give access to their home folders to other users.
    Rule Medium Severity
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  • FTP Server

    FTP is a common method for allowing remote access to files. Like telnet, the FTP protocol is unencrypted, which means that passwords and other data...
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  • Disable vsftpd if Possible

    To minimize attack surface, disable vsftpd if at all possible.
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  • Uninstall vsftpd Package

    The vsftpd package can be removed with the following command: 
     $ sudo dnf erase vsftpd
    Rule High Severity
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  • Configure vsftpd to Provide FTP Service if Necessary

    The primary vsftpd configuration file is /etc/vsftpd.conf, if that file exists, or /etc/vsftpd/vsftpd.conf if it does not.
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  • Configure Firewalls to Protect the FTP Server

    By default, <code>iptables</code> blocks access to the ports used by the web server. To configure <code>iptables</code> to allow port 21 traffic,...
    Rule Unknown Severity
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  • Disable FTP Uploads if Possible

    Is there a mission-critical reason for users to upload files via FTP? If not, edit the vsftpd configuration file to add or correct the following co...
    Rule Unknown Severity
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  • Place the FTP Home Directory on its Own Partition

    By default, the anonymous FTP root is the home directory of the FTP user account. The df command can be used to verify that this directory is on it...
    Rule Unknown Severity
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  • Enable Logging of All FTP Transactions

    Add or correct the following configuration options within the <code>vsftpd</code> configuration file, located at <code>/etc/vsftpd/vsftpd.conf</cod...
    Rule Unknown Severity
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