Is port 873 (rsync) dangerous?

Port 873 is classified as medium risk. It is commonly exposed but consider using encrypted alternatives where available and monitor activity.

Should port 873 be open on my firewall?

Port 873 can be open but should be monitored closely. Keep the service updated and prefer encrypted alternatives where available.

Port 873 (rsync) uses the TCP transport protocol and falls under the File Transfer category.

:873 (TCP)

Medium Risk

TCP — File Transfer

Port Number 873

Service Name rsync

Transport Protocol TCP

Category File Transfer

Security Risk Medium

Port Range Well-Known (0-1023)

rsync file synchronization protocol. Efficiently transfers and synchronizes files between systems using delta encoding to minimize data transfer.

TCP File Transfer Commonly Used

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.