Overview of services running on Port 497 TCP.
~29 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	Count	Percent
retrospect	Dantz Retrospect backup client	14319	48.835
http		3965	13.523
http	SonicWALL	3483	11.879
chat	AIM or ICQ server	2157	7.357
no match	-/-	1021	3.482
http	lighttpd	765	2.609
http	AIM	644	2.196
http	Apache	423	1.443
http	Microsoft IIS httpd	250	0.853
http	thttpd	128	0.437
http	DrcomServer1.0	122	0.416
retrospect	Dantz Retrospect	121	0.413
ssh	OpenSSH	117	0.399
http	Microsoft HTTPAPI httpd	100	0.341
ssh		98	0.334
http	Apache Tomcat/Coyote JSP engine	86	0.293
http	GoAhead-Webs	83	0.283
ftp	MikroTik router ftpd	83	0.283
http	Netwave IP camera http config	78	0.266
http	Avtech AVN801 network camera	67	0.229
telnet		59	0.201
http	Boa HTTPd	59	0.201
vnc	VNC	54	0.184
http	PDR-M800	50	0.171
arcserve	ARCserve Discovery	44	0.15
http-proxy	Squid http proxy	29	0.099
ftp		27	0.092
mysql	MySQL	26	0.089
http	Hikvision-Webs	26	0.089
http	nginx	25	0.085
http	mini_httpd	23	0.078
http	Gadspot/Avtech AV787 webcam http config	22	0.075
ftp	Microsoft ftpd	22	0.075
smtp	Microsoft ESMTP	18	0.061
righteous-backup	R1Soft Righteous Backup	18	0.061
ftp	ProFTPD	18	0.061
http	Mbedthis-Appweb	17	0.058
http	uc-httpd	16	0.055
ftp	FileZilla ftpd	14	0.048
minecraft	Minecraft game server	13	0.044
ftp	Pure-FTPd	13	0.044
vnc	RealVNC Enterprise	12	0.041
smtp	Microsoft Exchange smtpd	12	0.041
smtp		12	0.041
http	uTorrent WebUI	12	0.041
http	GoAhead-Webs embedded httpd	12	0.041
ftp	vsftpd	12	0.041
http	GeoVision GeoHttpServer for webcams	11	0.038
http	RemotelyAnywhere remote PC management httpd	10	0.034
http	DVR Systems webcam http interface	10	0.034
directconnect	Direct Connect P2P	10	0.034