550
new-rwho
Medium RiskUDP — System & Infrastructure
Port Overview
Port Number
550
Service Name
new-rwho
Transport Protocol
UDP
Category
System & Infrastructure
Security Risk
Medium
Port Range
Well-Known (0-1023)
What is Port 550?
Port 550 is assigned to new-rwho, broadcasting info about logged-in users across Unix networks. Privacy risk; effectively obsolete.
UDP
System & Infrastructure
Security Considerations
Port 550 (new-rwho) 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.