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Guide to the Secure Configuration of Red Hat Enterprise Linux 10

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Print Support

    The Common Unix Printing System (CUPS) service provides both local and network printing support. A system running the CUPS service can accept print jobs from other systems, process them, and send t...
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  • Disable the CUPS Service

    The cups service can be disabled with the following command: 
    $ sudo systemctl mask --now cups.service
    Rule Unknown Severity
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  • Proxy Server

    A proxy server is a very desirable target for a potential adversary because much (or all) sensitive data for a given infrastructure may flow through it. Therefore, if one is required, the system ac...
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  • Disable Squid if Possible

    If Squid was installed and activated, but the system does not need to act as a proxy server, then it should be disabled and removed.
    Group
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  • Uninstall squid Package

    The squid package can be removed with the following command: 
     $ sudo dnf remove squid
    Rule Unknown Severity
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  • Disable Squid

    The squid service can be disabled with the following command: 
    $ sudo systemctl mask --now squid.service
    Rule Unknown Severity
    Show

  • Network Routing

    A router is a very desirable target for a potential adversary because they fulfill a variety of infrastructure networking roles such as access to network segments, gateways to other networks, filt...
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  • Disable Quagga if Possible

    If Quagga was installed and activated, but the system does not need to act as a router, then it should be disabled and removed.
    Group
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  • Uninstall quagga Package

    The quagga package can be removed with the following command: 
     $ sudo dnf remove quagga
    Rule Low Severity
    Show

  • Samba(SMB) Microsoft Windows File Sharing Server

    When properly configured, the Samba service allows Linux systems to provide file and print sharing to Microsoft Windows systems. There are two software packages that provide Samba support. The firs...
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  • 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 provide Microsoft Windows file and print sharing fun...
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  • Uninstall Samba Package

    The samba package can be removed with the following command: 
     $ sudo dnf remove samba
    Rule Unknown Severity
    Show

  • SNMP Server

    The Simple Network Management Protocol allows administrators to monitor the state of network devices, including computers. Older versions of SNMP were well-known for weak security, such as plaintex...
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  • 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 is not needed, the software should be disabled an...
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  • Uninstall net-snmp Package

    The net-snmp package provides the snmpd service. The net-snmp package can be removed with the following command: 
    $ sudo dnf remove net-snmp
    Rule Unknown Severity
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  • Disable snmpd Service

    The snmpd service can be disabled with the following command: 
    $ sudo systemctl mask --now snmpd.service
    Rule Low Severity
    Show

  • Configure OpenSSH Client if Necessary

    The following configuration changes apply to the SSH client. They can improve security parameters relwevant to the client user, e.g. increasing entropy while generating initialization vectors. Note...
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  • Disable X11 Forwarding

    The X11Forwarding parameter provides the ability to tunnel X11 traffic through the connection to enable remote graphic connections. SSH has the capability to encrypt remote X11 connections when SSH...
    Rule Medium Severity
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  • Do Not Allow SSH Environment Options

    Ensure that users are not able to override environment variables of the SSH daemon. <br> The default SSH configuration disables environment processing. The appropriate configuration is used if no v...
    Rule Medium Severity
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  • Configure Accepting Prefix Information in Router Advertisements on All IPv6 Interfaces By Default

    To set the runtime status of the <code>net.ipv6.conf.default.accept_ra_pinfo</code> kernel parameter, run the following command: <pre>$ sudo sysctl -w net.ipv6.conf.default.accept_ra_pinfo=0</pre> ...
    Rule Unknown Severity
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