Port 530 — Sun RPC
Quick reference for TCP/UDP port 530, used by Sun RPC. Includes what the service does, security guidance and related ports.
Port
530
Protocol
TCP/UDP
Service
Sun RPC
What is port 530?
Sun ONC RPC.
What port does Sun RPC use?
Sun RPC listens on port 530 by default.
Security guidance
Medium risk — open with care
Port 530 (Sun RPC) can safely face the internet if you keep the software up to date, restrict admin endpoints, and use TLS where possible. Audit who can reach it and watch your logs.
Frequently asked
What is port 530 used for?+
Port 530 is the standard TCP/UDP port for Sun RPC. Sun ONC RPC.
What port does Sun RPC use?+
Sun RPC listens on port 530 by default.
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