Port    Name               Comment
1	tcpmux	           TCP port service multiplexer
5	rje	           Remote Job Entry
7	echo	           Echo service
9	discard	           Null service for connection testing
11	systat	           System Status service for listing connected ports
13	daytime	           Sends date and time to requesting host
17	qotd	           Sends quote of the day to connected host
18	msp	          Message Send Protocol
19	chargen	           Character Generation service; sends endless stream of characters
20	ftp-data           FTP data port
21	ftp	           File Transfer Protocol (FTP) port; sometimes used by File Service Protocol (FSP)
22	ssh	           Secure Shell (SSH) service
23	telnet	           The Telnet service
25	smtp	           Simple Mail Transfer Protocol (SMTP)
37	time	           Time Protocol
39	rlp	           Resource Location Protocol
42	nameserver         Internet Name Service
43	nicname	           WHOIS directory service
49	tacacs	           Terminal Access Controller Access Control System for TCP/IP based authentication and access
50	re-mail-ck         Remote Mail Checking Protocol
53	domain	           domain name services (such as BIND)
63	whois++	           WHOIS++, extended WHOIS services
67	bootps	           Bootstrap Protocol (BOOTP) services; also used by Dynamic Host Configuration Protocol (DHCP) services
68	bootpc	           Bootstrap (BOOTP) client; also used by Dynamic Host Control Protocol (DHCP) clients
69	tftp	           Trivial File Transfer Protocol (TFTP)
70	gopher	           Gopher Internet document search and retrieval
71	netrjs-1           Remote Job Service
72	netrjs-2           Remote Job Service
73	netrjs-3           Remote Job Service
73	netrjs-4           Remote Job Service
79	finger             Finger service for user contact information
80	http	           HyperText Transfer Protocol (HTTP) for World Wide Web (WWW) services
88	kerberos           Kerberos network authentication system
95	supdup             Telnet protocol extension
101	hostname           Hostname services on SRI-NIC machines
102	iso-tsap           ISO Development Environment (ISODE) network applications
105	csnet-ns           Mailbox nameserver; also used by CSO nameserver
107	rtelnet            Remote Telnet
109	pop2	           Post Office Protocol version 2
110	pop3	           Post Office Protocol version 3
111	sunrpc	           Remote Procedure Call (RPC) Protocol for remote command execution, used by Network Filesystem (NFS)
113	auth	           Authentication and Ident protocols
115	sftp	           Secure File Transfer Protocol (SFTP) services
117	uucp-path          Unix-to-Unix Copy Protocol (UUCP) Path services
119	nntp	           Network News Transfer Protocol (NNTP) for the USENET discussion system
123	ntp	           Network Time Protocol (NTP)
137	netbios-ns         NETBIOS Name Services used in Red Hat Enterprise Linux by Samba
138	netbios-dgm        NETBIOS Datagram Services used in Red Hat Enterprise Linux by Samba
139	netbios-ssn        NETBIOS Session Services used in Red Hat Enterprise Linux by Samba
143	imap	           Internet Message Access Protocol (IMAP)
161	snmp	           Simple Network Management Protocol (SNMP)
162	snmptrap           Traps for SNMP
163	cmip-man           Common Management Information Protocol (CMIP)
164	cmip-agent         Common Management Information Protocol (CMIP)
174	mailq	           MAILQ
177	xdmcp	           X Display Manager Control Protocol
178	nextstep           NeXTStep window server
179	bgp	           Border Gateway Protocol
191	prospero           Cliffod Neuman's Prospero services
194	irc	           Internet Relay Chat (IRC)
199	smux	           SNMP UNIX Multiplexer
201	at-rtmp	           AppleTalk routing
202	at-nbp	           AppleTalk name binding
204	at-echo	           AppleTalk echo
206	at-zis	           AppleTalk zone information
209	qmtp	           Quick Mail Transfer Protocol (QMTP)
210	z39.50	           NISO Z39.50 database
213	ipx	           Internetwork Packet Exchange (IPX), a datagram protocol commonly used in Novell Netware environments
220	imap3	           Internet Message Access Protocol version 3
245	link	           LINK
347	fatserv	           Fatmen Server
363	rsvp_tunnel        RSVP Tunnel
369	rpc2portmap        Coda filesystem portmapper
370	codaauth2          Coda filesystem authentication services
372	ulistproc          UNIX Listserv
389	ldap	           Lightweight Directory Access Protocol (LDAP)
427	svrloc	           Service Location Protocol (SLP)
435	mobilip-mn         Mobile Internet Protocol (IP) manager
443	https	           Secure Hypertext Transfer Protocol (HTTP)
444	snpp	           Simple Network Paging Protocol
464	kpasswd	           Kerberos password and key changing services
468	photuris           Photuris session key management protocol
487	saft	           Simple Asynchronous File Transfer (SAFT) protocol
488	gss-http           Generic Security Services (GSS) for HTTP
496	pim-rp-disc        Rendezvous Point Discovery (RP-DISC) for Protocol Independent Multicast (PIM) services
500	isakmp	           Internet Security Association and Key Management Protocol (ISAKMP)
535	iiop	           Internet Inter-Orb Protocol (IIOP)
538	gdomap	           GNUstep Distributed Objects Mapper (GDOMAP)
546	dhcpv6-client      Dynamic Host Configuration Protocol (DHCP) version 6 client
547	dhcpv6-server      Dynamic Host Configuration Protocol (DHCP) version 6 Service
554	rtsp	           Real Time Stream Control Protocol (RTSP)
563	nntps	           Network News Transport Protocol over Secure Sockets Layer (NNTPS)
565	whoami	           whoami
587	submission         Mail Message Submission Agent (MSA)
610	npmp-local         Network Peripheral Management Protocol (NPMP) local / Distributed Queueing System (DQS)
611	npmp-gui           Network Peripheral Management Protocol (NPMP) GUI / Distributed Queueing System (DQS)
612	hmmp-ind           HMMP Indication / DQS
631	ipp	           Internet Printing Protocol (IPP)
636	ldaps	           Lightweight Directory Access Protocol over Secure Sockets Layer (LDAPS)
674	acap	           Application Configuration Access Protocol (ACAP)
694	ha-cluster         Heartbeat services for High-Availability Clusters
749	kerberos-adm       Kerberos version 5 (v5) 'kadmin' database administration
750	kerberos-iv        Kerberos version 4 (v4) services
765	webster	           Network Dictionary
767	phonebook          Network Phonebook
873	rsync	           rsync file transfer services
992	telnets	           Telnet over Secure Sockets Layer (TelnetS)
993	imaps	           Internet Message Access Protocol over Secure Sockets Layer (IMAPS)
994	ircs	           Internet Relay Chat over Secure Sockets Layer (IRCS)
995	pop3s	           Post Office Protocol version 3 over Secure Sockets Layer (POP3S)


