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 Count Percent
exec503539.086
no match-/--/-186414.47
chatAIM or ICQ server159012.343
execAIX rexecd12079.37
execHP-UX rexecd6054.696
execnetkit-rsh rexecd4113.19
httplighttpd1.4.193582.779
http2922.267
httpMicrosoft IIS httpd1521.18
ssh1471.141
secure-socketCA Secure Socket Adapter1120.869
httpMicrosoft HTTPAPI httpd2.0840.652
loginCisco/NetApp logind720.559
sshOpenSSH5.5630.489
execOpenVMS execd440.342
sshOpenSSH5.3p1 Debian 3ubuntu7430.334
telnet420.326
sshOpenSSH5.9p1 Debian 5ubuntu1400.311
vncVNC360.279
arcserveARCserve Discovery350.272
sshOpenSSH4.3300.233
ftp270.21
tcpwrappedBSD TCP Wrappers220.171
httpBoa HTTPd0.94.14rc21210.163
sshOpenSSH5.0200.155
ftpMicrosoft ftpd200.155
sshOpenSSH5.8p1 Debian 7ubuntu1170.132
sshOpenSSH5.8p1 Debian 1ubuntu3160.124
directconnectDirect Connect P2P160.124