9. Security Considerations
9. Security Considerations
The procedures described in this document do not directly introduce new security considerations beyond those already present in the Internet infrastructure. However, several security-related aspects should be noted:
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Port Number Predictability: Well-known port numbers make it easier for both legitimate users and attackers to locate services. This is an inherent trade-off in the design of the Internet.
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Service Identification: Relying solely on port numbers for service identification can be problematic, as port numbers can be changed or services can be moved to non-standard ports.
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Registry Integrity: The integrity and availability of the port number registry is important for Internet operations. IANA takes appropriate measures to ensure the registry is accurate and accessible.
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Unauthorized Use: Services should not use port numbers that have been assigned to other services, as this can cause operational problems and potential security issues.
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DNS SRV Security: When using DNS SRV records for service discovery, the security considerations of DNS apply, including the need for DNSSEC when appropriate.
The procedures for port number assignment do not create new security vulnerabilities, but implementers should be aware of the security implications of their service designs and deployments.