Overview of services running on Port 256 TCP.
~12 Thousand IP addresses observed from May to December 2012
To get raw lists of the data go to Download. For an explanation of what this data is and how it was obtained, see Paper.

Servicename Product Version InfoOSDevicetypeCount Percent
sshDropbear sshd0.51protocol 2.0Linux548845.359
no match180614.927
chatAIM or ICQ server146812.133
fw1-topologyCheckpoint FireWall-1 Topologyfirewall140111.579
httpMicrosoft IIS httpd1611.331
fw1-secureremoteCheckpoint Firewall1 SecureRemotefirewall1361.124
httpMicrosoft HTTPAPI httpd2.0SSDP/UPnPWindows1090.901
sshprotocol 1.5880.727
sshOpenSSH4.3protocol 2.0440.364
arcserveARCserve Discovery310.256
httpBoa HTTPd0.94.14rc21300.248
vncVNCprotocol 3.8280.231
httpMiniServ1.580Webmin httpd200.165