Overview of services running on Port 512 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
no match186414.47
chatAIM or ICQ server159012.343
execAIX rexecdAIX12029.331
execHP-UX rexecdHP-UX6054.696
execnetkit-rsh rexecdLinux4113.19
httpMicrosoft IIS httpd1521.18
secure-socketCA Secure Socket Adapter1120.869
sshprotocol 1.5870.675
httpMicrosoft HTTPAPI httpd2.0SSDP/UPnPWindows840.652
loginCisco/NetApp logind720.559
sshOpenSSH5.5protocol 2.0630.489
sshprotocol 2.0600.466
execOpenVMS execdOpenVMS440.342
sshOpenSSH5.3p1 Debian 3ubuntu7Ubuntu Linux; protocol 2.0Linux430.334
sshOpenSSH5.9p1 Debian 5ubuntu1Ubuntu Linux; protocol 2.0Linux400.311
arcserveARCserve Discovery350.272
sshOpenSSH4.3protocol 2.0280.217
vncVNCprotocol 3.8240.186
tcpwrappedBSD TCP Wrappersrexecd220.171
httpBoa HTTPd0.94.14rc21210.163
sshOpenSSH5.0protocol 2.0200.155
ftpMicrosoft ftpdWindows200.155