Overview of services running on Port 444 TCP.
~498 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	Info	OS	Devicetype	Count	Percent
ssl	SSLv3					311952	62.602
ssl	TLSv1					126437	25.373
no match						14782	2.966
http						4443	0.892
http	Apache	2.0.52				4296	0.862
ssl	Microsoft IIS SSL			Windows		3867	0.776
http	Apache					3483	0.699
http	Apache	2				3417	0.686
chat	AIM or ICQ server					2528	0.507
http	SonicWALL				firewall	1536	0.308
http	Apache		SSL-only mode			890	0.179
http	Apache	2.0.52	(CentOS)			789	0.158
http	Apache	2.0.51				762	0.153
http	Microsoft IIS httpd					708	0.142
http	PWS httpd	1.7.3.9				667	0.134
xml						627	0.126
http	Apache	2.2.8	PHP/5.2.4-2ubuntu5.19 with Suhosin-Patch			624	0.125
http	Apache	2.2.6				596	0.12
http	Apache	2.2.3				581	0.117
http	Microsoft HTTPAPI httpd	2.0	SSDP/UPnP	Windows		534	0.107
http	Secure Computing Sidewinder firewall http admin				firewall	514	0.103
http	PWS httpd	1.7.3.13				456	0.092
http	lighttpd	1.4.19				422	0.085
http	Apache	1.3.29	Sun Cobalt (Unix) PHP/4.0.6 mod_ssl/2.8.16 OpenSSL/0.9.6m FrontPage/5.0.2.2510 mod_perl/1.26			405	0.081
http	Apache	1.3.20	Sun Cobalt (Unix) mod_ssl/2.8.4 OpenSSL/0.9.6b mod_auth_pam_external/0.1 mod_perl/1.25			333	0.067
http	Apache	2.0.63				317	0.064
http	Check Point SVN foundation httpd				firewall	283	0.057
http	Apache	2.2.16				272	0.055
openvpn	OpenVPN					270	0.054
http	GoAhead-Webs httpd					231	0.046
ssh	OpenSSH	5.6	protocol 2.0			217	0.044
http	lighttpd	1.4.29				203	0.041
http	Apache	2.2.14				194	0.039
ftp	FileZilla ftpd	0.9.34 beta		Windows		187	0.038
http	Apache	2.0.52	(BlueQuartz)			182	0.037
http	Apache	2.2.6	(Turbolinux)			165	0.033
ftp	FileZilla ftpd	0.9.36 beta		Windows		159	0.032
http	Apache	1.3.27				158	0.032
directconnect	Direct Connect P2P			Windows		157	0.032
http	Apache	2.0.51	(Turbolinux)			152	0.031
ssl	TLS	1.0				151	0.03
http	thttpd	2.24				144	0.029
ssh	OpenSSH	5.2	protocol 2.0			137	0.027
smtp						134	0.027
ssh	OpenSSH	4.3	protocol 2.0			122	0.024
ssh	Dropbear sshd	0.52	protocol 2.0	Linux		122	0.024
http	AIM	1.0				120	0.024
http	Apache	2.2.22				116	0.023
http	Apache	1.3.29	Sun Cobalt (Unix) mod_ssl/2.8.16 OpenSSL/0.9.6m mod_auth_pam_external/0.1 mod_perl/1.25			113	0.023
ssh	SCS sshd	3.2.9.1	protocol 2.0			112	0.022
ftp	Serv-U ftpd	5.2		Windows		111	0.022
ssh	OpenSSH	5.5p1 Debian 6+squeeze2	protocol 2.0	Linux		109	0.022
ssh			protocol 1.5			103	0.021
http	Apache	2.0.63	(CentOS)			101	0.02
ssh	OpenSSH	5.1p1 Debian 3ubuntu1	Ubuntu Linux; protocol 2.0	Linux		100	0.02
http	Apache	2.2.22	mod_ssl/2.2.22 OpenSSL/0.9.8x PHP/5.3.13			100	0.02
http	Apache	1.3.20	Sun Cobalt (Unix) PHP/4.0.6 mod_ssl/2.8.4 OpenSSL/0.9.6 FrontPage/5.0.2.2510 mod_perl/1.26			94	0.019
http	Apache Tomcat/Coyote JSP engine	1.1				93	0.019
http	Embedded HTTP Server.					88	0.018
ssh	OpenSSH	5.9	protocol 2.0			87	0.017
vnc	VNC		protocol 3.8			85	0.017
ssh	OpenSSH	5.3	protocol 2.0			84	0.017
http	thttpd	2.25b				76	0.015
ftp						73	0.015
http	thttpd					69	0.014
http	(null)					69	0.014
http	Boa HTTPd	0.94.14rc21				69	0.014
http	Apache	2.2.3	(CentOS)			69	0.014
http	Apache	2.0.46				69	0.014
telnet						67	0.013
ssh	OpenSSH	5.3p1 Debian 3ubuntu7	Ubuntu Linux; protocol 2.0	Linux		67	0.013
ssh	OpenSSH	5.9p1 Debian 5ubuntu1	Ubuntu Linux; protocol 2.0	Linux		65	0.013
http	Netwave IP camera http config				webcam	62	0.012
http	Apache	1.3.20	Sun Cobalt (Unix) mod_ssl/2.8.4 OpenSSL/0.9.6b PHP/4.0.6 mod_fastcgi/2.2.8 mod_auth_pam_external/0.1 mod_perl/1.25			61	0.012
http	nginx					60	0.012
arcserve	ARCserve Discovery					60	0.012
http	Draytek Vigor ADSL router webadmin				broadband router	59	0.012
http	Hikvision-Webs					56	0.011
http	Apache	1.3.41				56	0.011
ssh	OpenSSH	5.1p1 Debian 5	protocol 2.0	Linux		54	0.011
snpp	QuickPage SNPP	3.3				51	0.01
http	Allegro RomPager	4.06	D-Link DWL-3200AP WAP http config		WAP	51	0.01
http	Apache	1.3.6	(Unix) mod_perl/1.21 mod_ssl/2.2.8 OpenSSL/0.9.2b			49	0.01
telnet	Linux telnetd			Linux		46	0.009
http	Apache	2.2.15				46	0.009
http	Apache	1.3.33				46	0.009
ssh	OpenSSH	5.5p1 Debian 6+squeeze1	protocol 2.0	Linux		43	0.009
ftp	vsftpd	2.0.8 or later				42	0.008
http-proxy	Squid http proxy	2.6.STABLE12				41	0.008
http	Apache	2.0.51	(BlueQuartz)			41	0.008
http	Microsoft IIS httpd	6.0		Windows		40	0.008
http	Apache	2.2.4	PHP/5.2.5 mod_ssl/2.2.4 OpenSSL/0.9.8e			40	0.008
http	Apache	2.2.17				40	0.008
http	Apache	1.3.29	Sun Cobalt (Unix) mod_ssl/2.8.16 OpenSSL/0.9.6m PHP/4.0.6 mod_auth_pam_external/0.1 mod_perl/1.25			39	0.008
http	Apache	2.2.8	(Ubuntu) PHP/5.2.4-2ubuntu5.19 with Suhosin-Patch			38	0.008
http	Apache	1.3.41	manitu (Unix) mod_ssl/2.8.31 OpenSSL/0.9.8j mod_auth_pam_external/0.1 mod_perl/1.29			38	0.008
ftp	Microsoft ftpd			Windows		37	0.007
ssh	OpenSSH	team2work.SEC.Stick.Server_1.1	protocol 2.0			36	0.007
http	III 100					36	0.007
snpp	HylaFAX SNPP	4.4.4				35	0.007
vnc	RealVNC Enterprise		protocol 4.1			34	0.007
http	GeoVision GeoHttpServer for webcams				webcam	34	0.007
http	Apache		html			34	0.007
ssh	OpenSSH	4.3p2 Debian 9etch2	protocol 2.0	Linux		33	0.007
http	Apache	2.0.64				33	0.007
http	Apache	1.3.29				33	0.007
ftp	Serv-U ftpd	6.0		Windows		32	0.006
http	Boa HTTPd	0.94.13				31	0.006
ssh	OpenSSH	5.8	protocol 2.0			30	0.006
ssh	OpenSSH	5.8p1 Debian 7ubuntu1	Ubuntu Linux; protocol 2.0	Linux		30	0.006
http	Avtech AVN801 network camera	1.0	UPnP 1.0		webcam	30	0.006
vnc	RealVNC Personal		protocol 4.0			28	0.006
snpp	HylaFAX SNPP	6.0.4				27	0.005
http	Microsoft ISA httpd			Windows		26	0.005
ssh	OpenSSH	5.5p1 Debian 6	protocol 2.0	Linux		25	0.005
http	Jetty	6.1.x				25	0.005
ftp	Pure-FTPd					25	0.005
ftp	glFTPd	2.01		Linux		25	0.005
http	World Client WDaemon httpd	4.0	Alt-N MDaemon webmail	Windows		24	0.005
http	Apache	2.2.9				24	0.005
http	Apache	2.2.20				24	0.005
http	Allegro RomPager	4.51 UPnP/1.0	ZyXEL ZyWALL 2			24	0.005
ssh	OpenSSH	5.5p1 Debian 4ubuntu6	Ubuntu Linux; protocol 2.0	Linux		23	0.005
snpp	HylaFAX SNPP	6.0.5				23	0.005
http	Apache	1.3.41	Built by www.zeffie.com (Unix) PHP/4.4.4 mod_ssl/2.8.31 OpenSSL/0.9.8g mod_auth_pam_external/0.1 mod_perl/1.30			23	0.005
ftp	Serv-U ftpd	6.4		Windows		23	0.005
ftp	FileZilla ftpd	0.9.41 beta		Windows		23	0.005
ssh	Dropbear sshd	0.53.1	protocol 2.0	Linux		22	0.004
ssh	Dropbear sshd	0.51	protocol 2.0	Linux		22	0.004
http	uTorrent WebUI			Windows		22	0.004
http-proxy	Squid http proxy	2.7.STABLE9				22	0.004
http	Boa HTTPd	0.93.15				22	0.004
http	Apache	2.2.22	mod_ssl/2.2.22 OpenSSL/0.9.8t PHP/5.3.10			22	0.004
http	Apache	1.3.41	Built by www.zeffie.com (Unix) mod_ssl/2.8.31 OpenSSL/0.9.8g mod_auth_pam_external/0.1 mod_perl/1.30			22	0.004
http	Apache	1.3.12	Cobalt (Unix) mod_ssl/2.6.4 OpenSSL/0.9.5a mod_auth_pam/1.0a mod_perl/1.24			21	0.004
ssh			protocol 2.0			20	0.004
ssh	OpenSSH	5.8p1 Debian 1ubuntu3	Ubuntu Linux; protocol 2.0	Linux		20	0.004
smtp	Postfix smtpd					20	0.004
smtp	Microsoft Exchange smtpd			Windows		20	0.004
http	http server 1.0					20	0.004