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Guide to the Secure Configuration of Red Hat Enterprise Linux 8

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Uninstall nfs-utils Package

    The nfs-utils package can be removed with the following command: 
    $ sudo yum erase nfs-utils
    Rule Low Severity
    Show

  • Disable All NFS Services if Possible

    If there is not a reason for the system to operate as either an NFS client or an NFS server, follow all instructions in this section to disable sub...
    Group
    Show

  • Disable netfs if Possible

    To determine if any network filesystems handled by netfs are currently mounted on the system execute the following command: <pre>$ mount -t nfs,nfs...
    Group
    Show

  • Disable Network File Systems (netfs)

    The netfs script manages the boot-time mounting of several types of networked filesystems, of which NFS and Samba are the most common. If these fil...
    Rule Unknown Severity
    Show

  • Disable Services Used Only by NFS

    If NFS is not needed, disable the NFS client daemons nfslock, rpcgssd, and rpcidmapd. <br><br> All of these daemons run with elevated privileges, a...
    Group
    Show

  • Uninstall rpcbind Package

    The rpcbind utility maps RPC services to the ports on which they listen. RPC processes notify rpcbind when they start, registering the ports they a...
    Rule Low Severity
    Show

  • Disable Network File System Lock Service (nfslock)

    The Network File System Lock (nfslock) service starts the required remote procedure call (RPC) processes which allow clients to lock files on the s...
    Rule Unknown Severity
    Show

  • Disable rpcbind Service

    The rpcbind utility maps RPC services to the ports on which they listen. RPC processes notify rpcbind when they start, registering the ports they a...
    Rule Low Severity
    Show

  • Disable Secure RPC Client Service (rpcgssd)

    The rpcgssd service manages RPCSEC GSS contexts required to secure protocols that use RPC (most often Kerberos and NFS). The rpcgssd service is the...
    Rule Unknown Severity
    Show

  • Configure NFS Services to Use Fixed Ports (NFSv3 and NFSv2)

    Firewalling should be done at each host and at the border firewalls to protect the NFS daemons from remote access, since NFS servers should never b...
    Group
    Show

  • Configure lockd to use static TCP port

    Configure the <code>lockd</code> daemon to use a static TCP port as opposed to letting the RPC Bind service dynamically assign a port. Edit the fil...
    Rule Unknown Severity
    Show

  • Configure lockd to use static UDP port

    Configure the <code>lockd</code> daemon to use a static UDP port as opposed to letting the RPC Bind service dynamically assign a port. Edit the fil...
    Rule Unknown Severity
    Show

  • Configure mountd to use static port

    Configure the <code>mountd</code> daemon to use a static port as opposed to letting the RPC Bind service dynamically assign a port. Edit the file <...
    Rule Unknown Severity
    Show

  • Configure statd to use static port

    Configure the <code>statd</code> daemon to use a static port as opposed to letting the RPC Bind service dynamically assign a port. Edit the file <c...
    Rule Unknown Severity
    Show

  • Configure NFS Clients

    The steps in this section are appropriate for systems which operate as NFS clients.
    Group
    Show

  • Disable NFS Server Daemons

    There is no need to run the NFS server daemons <code>nfs</code> and <code>rpcsvcgssd</code> except on a small number of properly secured systems de...
    Group
    Show

  • Disable Network File System (nfs)

    The Network File System (NFS) service allows remote hosts to mount and interact with shared filesystems on the local system. If the local system is...
    Rule Unknown Severity
    Show

  • Disable Secure RPC Server Service (rpcsvcgssd)

    The rpcsvcgssd service manages RPCSEC GSS contexts required to secure protocols that use RPC (most often Kerberos and NFS). The rpcsvcgssd service ...
    Rule Unknown Severity
    Show

  • Specify UID and GID for Anonymous NFS Connections

    To specify the UID and GID for remote root users, edit the <code>/etc/exports</code> file and add the following for each export: <pre> anonuid=<cod...
    Rule Unknown Severity
    Show

  • Uninstall Samba Package

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

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