The Shadowserver Foundation

Accessible rsync Scanning Project

If you are looking at this page, then more than likely, you noticed a scan coming from this server across your network and/or poking at the rsync service on port 873/TCP.

The Shadowserver Foundation is currently undertaking a project to search for publicly accessible devices that have the rsync service running. The goal of this project is to identify accessible systems that have the rsync service running and report them back to the network owners for remediation.

The presence of these devices may be intentional, but if not, they have the potential to leak sensitive such as the type of name of the fileshares and weather a password is required.

Servers that are exposing this information have been incorporated into our reports and are being reported on a daily basis.


We are querying all computers with routable IPv4 addresses that are not firewalled from the internet on port 873/tcp with standard rsync query and capturing the response. We intend no harm, but if we are causing problems, please contact us at: dnsscan [at] shadowserver [dot] org.

If you would like to test your own device to see if it has rsync enabled, try the nmap command: "nmap -v -p 873 [IP]"


To be removed from this set of scanning you will need to send an email to dnsscan [at] shadowserver [dot] org with the specific CIDR's that you would like to have removed. You will have to be the verifiable owner of these CIDR's and be able to prove that fact.

Useful Links

Scan Status

Statistics on current run

Other Statistics

If you would like other statistics and information on historical trends, please take a look at: Otherwise, stats from the most current scan are listed below.

All devices with rsync Enabled

All rsync

(Click image to enlarge)

If you would like to see more regions click here

All devices with Chargen Enabled

All rsync

(Click image to enlarge)

If you would like us to not scan your network, please let us know and we will remove your networks from the scan.

Likewise, if you have anymore questions please feel free to send us an email at: gro [tod] revfooreswodahs [ta] nacbarssnd

The Shadowserver Foundation