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Guide to the Secure Configuration of Red Hat Enterprise Linux 7

Rules, Groups, and Values defined within the XCCDF Benchmark

  • Rsyslog Logs Sent To Remote Host

    If system logs are to be useful in detecting malicious activities, it is necessary to send logs to a remote server. An intruder who has compromised...
    Group
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  • Remote Log Server

    Specify an URI or IP address of a remote host where the log messages will be sent and stored.
    Value
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  • Ensure Logs Sent To Remote Host

    To configure rsyslog to send logs to a remote log server, open <code>/etc/rsyslog.conf</code> and read and understand the last section of the file,...
    Rule Medium Severity
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  • net.ipv6.conf.default.max_addresses

    Maximum number of autoconfigured IPv6 addresses
    Value
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  • Verify iptables Enabled

    The iptables service can be enabled with the following command: 
    $ sudo systemctl enable iptables.service
    Rule Medium Severity
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  • Configure TLS for rsyslog remote logging

    Configure <code>rsyslog</code> to use Transport Layer Security (TLS) support for logging to remote server for the Forwarding Output Module in <code...
    Rule Medium Severity
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  • Configure CA certificate for rsyslog remote logging

    Configure CA certificate for <code>rsyslog</code> logging to remote server using Transport Layer Security (TLS) using correct path for the <code>De...
    Rule Medium Severity
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  • Network Configuration and Firewalls

    Most systems must be connected to a network of some sort, and this brings with it the substantial risk of network attack. This section discusses th...
    Group
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  • Configure Multiple DNS Servers in /etc/resolv.conf

    Determine whether the system is using local or DNS name resolution with the following command: <pre>$ sudo grep hosts /etc/nsswitch.conf hosts: fi...
    Rule Medium Severity
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  • Disable Client Dynamic DNS Updates

    Dynamic DNS allows clients to dynamically update their own DNS records. The updates are transmitted by unencrypted means which can reveal informati...
    Rule Medium Severity
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