873
rsync
Medium RiskTCP — File Transfer
Port Overview
Port Number
873
Service Name
rsync
Transport Protocol
TCP
Category
File Transfer
Security Risk
Medium
Port Range
Well-Known (0-1023)
What is Port 873?
rsync file synchronization protocol. Efficiently transfers and synchronizes files between systems using delta encoding to minimize data transfer.
TCP
File Transfer
Commonly Used
Security Considerations
Port 873 (rsync) 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.