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NORS -- CSRIC Best Practices Result

CSRIC Best Practices Result

Detailed Information for the Best Practice: 9-8-8090

Number 9-8-8090
Priority Highly Important
Description Restrict Use of Dynamic Port Allocation Protocols: Service Providers, Network Operators, and Equipment Suppliers should restrict dynamic port allocation protocols such as Remote Procedure Calls (RPC) and some classes of Voice-over-IP protocols (among others) from usage, especially on mission critical assets, to prevent host vulnerabilities to code execution. Dynamic port allocation protocols should not be exposed to the internet. If used, such protocols should be protected via a dynamic port knowledgeable filtering firewall or other similar network protection methodology.
Network Type(s) Internet/Data
Industry Role(s) Service Provider; Network Operator; Equipment Supplier
Keyword(s) Cyber Security;Intrusion Detection;Network Design;Network Elements;Network Operations;
Reference/Comments ITU-T Rec. X.815 (?? ISO/IEC 8073 ) Rec. ITU-T X.1031.