911
NCA
Medium RiskTCP — System & Infrastructure
Port Overview
Port Number
911
Service Name
NCA
Transport Protocol
TCP
Category
System & Infrastructure
Security Risk
Medium
Port Range
Well-Known (0-1023)
What is Port 911?
Network Computing Architecture (NCA) local IPC, used in DCE/RPC environments. NCA influenced the design of Microsoft's MSRPC implementation.
TCP
System & Infrastructure
Security Considerations
Port 911 (NCA) is classified as medium risk. While this service is commonly exposed, consider using encrypted alternatives where available.
Recommendation: Keep the service updated. Monitor logs for unusual activity.