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I - Mission Critical Public

Rules and Groups employed by this XCCDF Profile

  • A BIND 9.x master name server must limit the number of concurrent zone transfers between authorized secondary name servers.

    <VulnDiscussion>Limiting the number of concurrent sessions reduces the risk of Denial of Service (DoS) to the DNS implementation. Name serve...
    Rule Medium Severity
  • SRG-APP-000246-DNS-000035

    <GroupDescription></GroupDescription>
    Group
  • A BIND 9.x implementation configured as a caching name server must restrict recursive queries to only the IP addresses and IP address ranges of known supported clients.

    &lt;VulnDiscussion&gt;Any host that can query a resolving name server has the potential to poison the servers name cache or take advantage of other...
    Rule Medium Severity
  • SRG-APP-000158-DNS-000015

    <GroupDescription></GroupDescription>
    Group
  • The BIND 9.x server implementation must uniquely identify and authenticate the other DNS server before responding to a server-to-server transaction, zone transfer and/or dynamic update request using cryptographically based bidirectional authentication to protect the integrity of the information in transit.

    &lt;VulnDiscussion&gt;Server-to-server (zone transfer) transactions are provided by TSIG, which enforces mutual server authentication using a key t...
    Rule High Severity

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