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XCCDF
BIND 9.x Security Technical Implementation Guide
SRG-APP-000001-DNS-000115
The BIND 9.x server implementation must limit the number of concurrent session client connections to the number of allowed dynamic update clients.
The BIND 9.x server implementation must limit the number of concurrent session client connections to the number of allowed dynamic update clients.
An XCCDF Rule
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The BIND 9.x server implementation must limit the number of concurrent session client connections to the number of allowed dynamic update clients.
Medium Severity
<VulnDiscussion>Limiting the number of concurrent sessions reduces the risk of Denial of Service (DoS) to the DNS implementation. Name servers do not have direct user connections but accept client connections for queries. Original restriction on client connections should be high enough to prevent a self-imposed denial of service, after which the connections are monitored and fine-tuned to best meet the organization's specific requirements.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>