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Infoblox 7.x DNS Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • SRG-APP-000516-DNS-000091

    <GroupDescription></GroupDescription>
    Group
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  • For zones split between the external and internal sides of a network, the RRs for the external hosts must be separate from the RRs for the internal hosts.

    &lt;VulnDiscussion&gt;Authoritative name servers for an enterprise may be configured to receive requests from both external and internal clients. ...
    Rule Medium Severity
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  • SRG-APP-000516-DNS-000092

    <GroupDescription></GroupDescription>
    Group
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  • In a split DNS configuration, where separate name servers are used between the external and internal networks, the external name server must be configured to not be reachable from inside resolvers.

    &lt;VulnDiscussion&gt;Instead of having the same set of authoritative name servers serve different types of clients, an enterprise could have two d...
    Rule Medium Severity
    Show

  • SRG-APP-000516-DNS-000093

    <GroupDescription></GroupDescription>
    Group
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  • In a split DNS configuration, where separate name servers are used between the external and internal networks, the internal name server must be configured to not be reachable from outside resolvers.

    &lt;VulnDiscussion&gt;Instead of having the same set of authoritative name servers serve different types of clients, an enterprise could have two d...
    Rule Medium Severity
    Show

  • SRG-APP-000516-DNS-000099

    <GroupDescription></GroupDescription>
    Group
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  • The DNS implementation must implement internal/external role separation.

    &lt;VulnDiscussion&gt;DNS servers with an internal role only process name/address resolution requests from within the organization (i.e., internal ...
    Rule Medium Severity
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  • The DNS implementation must enforce a Discretionary Access Control (DAC) policy that limits propagation of access rights.

    &lt;VulnDiscussion&gt;Discretionary Access Control (DAC) is based on the premise that individual users are "owners" of objects and therefore have d...
    Rule Medium Severity
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  • The platform on which the name server software is hosted must be configured to send outgoing DNS messages from a random port.

    &lt;VulnDiscussion&gt;OS configuration practices as issued by the US Computer Emergency Response Team (US CERT) and the National Institute of Stand...
    Rule Medium Severity
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  • SRG-APP-000516-DNS-000112

    <GroupDescription></GroupDescription>
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  • The Infoblox system must utilize valid root name servers in the local root zone file.

    &lt;VulnDiscussion&gt;All caching name servers must be authoritative for the root zone because, without this starting point, they would have no kno...
    Rule Medium Severity
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  • SRG-APP-000516-DNS-000103

    <GroupDescription></GroupDescription>
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  • The Infoblox NIOS version must be at the appropriate version.

    &lt;VulnDiscussion&gt;Infoblox NIOS is updated on a regular basis to add feature support, implement bug fixes, and address security vulnerabilities...
    Rule Medium Severity
    Show

  • SRG-APP-000516-DNS-000108

    <GroupDescription></GroupDescription>
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  • The IP address for hidden master authoritative name servers must not appear in the name servers set in the zone database.

    &lt;VulnDiscussion&gt;A hidden master authoritative server is an authoritative DNS server whose IP address does not appear in the name server set f...
    Rule Medium Severity
    Show

  • SRG-APP-000516-DNS-000109

    <GroupDescription></GroupDescription>
    Group
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  • The platform on which the name server software is hosted must be configured to respond to DNS traffic only.

    &lt;VulnDiscussion&gt;OS configuration practices as issued by the US Computer Emergency Response Team (US CERT) and the National Institute of Stand...
    Rule Medium Severity
    Show

  • SRG-APP-000516-DNS-000110

    <GroupDescription></GroupDescription>
    Group
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  • Infoblox Grid configuration must be backed up on a regular basis.

    &lt;VulnDiscussion&gt;The Infoblox Grid Master is the central point of management within an Infoblox Grid. The Grid Master retains a full copy of t...
    Rule Medium Severity
    Show

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