1 : TCPMUX-TCP Port Service Multiplexer
2 : CompressNET Management Utility
3 : CompressNET Compression Process
5 : Remote Job Entry
7 : Echo Protocol
9 : Discard Protocol
11 : Active Users (systat service)
13 : Daytime Protocol
15 : netstat service
17 : Quote of the Day
18 : Message Send Protocol
19 : Character Generator Protocol (CHARGEN)
20 : FTP data transfer
21 : FTP control (command)
22 : Secure Shell (SSH)
23 : Telnet protocol
24 : Priv-mail (Any private mail system)
25 : SMTP-Simple Mail Transfer Protocol
27 : NSW User System FE
34 : Remote File (RF)
35 : Any private printer server protocol
37 : TIME protocol
39 : Resource Location Protocol (RLP)
41 : Graphics
42 : nameserver, ARPA Host Name Server Protocol
42 : WINS
43 : WHOIS protocol
47 : NI FTP
49 : TACACS Login Host protocol
50 : Remote Mail Checking Protocol
51 : IMP Logical Address Maintenance
52 : XNS (Xerox Network Systems) Time Protocol
53 : Domain Name System (DNS)
54 : XNS (Xerox Network Systems) Clearinghouse
55 : ISI Graphics Language (ISI-GL)
56 : XNS (Xerox Network Systems) Authentication
56 : Route Access Protocol (RAP)
57 : Mail Transfer Protocol (MTP)
58 : XNS (Xerox Network Systems) Mail
67 : BOOTP Server; DHCP
68 : BOOTP Client; DHCP
69 : Trivial File Transfer Protocol (TFTP)
70 : Gopher protocol
71 : NETRJS protocol
72 : NETRJS protocol
73 : NETRJS protocol
74 : NETRJS protocol
79 : Finger protocol
80 : Hypertext Transfer Protocol (HTTP)
81 : Torpark-Onion routing
82 : Torpark-Control
83 : MIT ML Device
88 : Kerberos-authentication system
90 : dnsix (DoD Network Security for Information Exchange) Securit Attribute Token Map
90 : Pointcast
99 : WIP Message Protocol
101 : NIC host name
102 : ISO-TSAP (Transport Service Access Point) Class 0 protocol
104 : ACR/NEMA Digital Imaging and Communications in Medicine
105 : CCSO Nameserver Protocol (Qi/Ph)
107 : Remote TELNET Service protocol
108 : SNA Gateway Access Server
109 : Post Office Protocol v2 (POP2)
110 : Post Office Protocol v3 (POP3)
111 : ONC RPC (SunRPC)
113 : ident-Authentication Service/Identification Protocol, used by IRC servers to identify users
113 : Authentication Service (auth)
115 : Simple File Transfer Protocol (SFTP)
117 : UUCP Path Service
118 : SQL (Structured Query Language) Services
119 : Network News Transfer Protocol (NNTP)-retrieval of newsgroup messages
123 : Network Time Protocol (NTP)-used for time synchronization
135 : DCE endpoint resolution
135 : Microsoft EPMAP (End Point Mapper), also known as DCE/RPC Locator service
137 : NetBIOS NetBIOS Name Service
138 : NetBIOS NetBIOS Datagram Service
139 : NetBIOS NetBIOS Session Service
143 : Internet Message Access Protocol (IMAP)
152 : Background File Transfer Program (BFTP)
153 : SGMP, Simple Gateway Monitoring Protocol
156 : SQL Service
158 : DMSP, Distributed Mail Service Protocol
161 : Simple Network Management Protocol (SNMP)
162 : Simple Network Management Protocol Trap (SNMPTRAP)
170 : Print-srv, Network PostScript
175 : VMNET (IBM z/VM, z/OS & z/VSE - Network Job Entry(NJE))
177 : X Display Manager Control Protocol (XDMCP)
179 : BGP (Border Gateway Protocol)
194 : Internet Relay Chat (IRC)
199 : SMUX, SNMP Unix Multiplexer
201 : AppleTalk Routing Maintenance
209 : The Quick Mail Transfer Protocol
210 : ANSI Z39.50
213 : Internetwork Packet Exchange (IPX)
218 : Message posting protocol (MPP)
220 : Internet Message Access Protocol (IMAP), version 3
256 : 2DEV "2SP" Port
259 : ESRO, Efficient Short Remote Operations
264 : BGMP, Border Gateway Multicast Protocol
280 : http-mgmt
308 : Novastor Online Backup
311 : Mac OS X Server Admin (officially AppleShare IP Web administration)
318 : PKIX TSP, Time Stamp Protocol
319 : Precision time protocol event messages
320 : Precision time protocol general messages
323 : IMMP, Internet Message Mapping Protocol
350 : MATIP-Type A, Mapping of Airline Traffic over Internet Protocol
351 : MATIP-Type B, Mapping of Airline Traffic over Internet Protocol
366 : ODMR, On-Demand Mail Relay
369 : Rpc2portmap
370 : codaauth2-Coda authentication server
370 : codaauth2-Coda authentication server
370 : securecast1-Outgoing packets to NAI's servers
371 : ClearCase albd
383 : HP data alarm manager
384 : A Remote Network Server System
387 : AURP, AppleTalk Update-based Routing Protocol
389 : Lightweight Directory Access Protocol (LDAP)
401 : UPS Uninterruptible Power Supply
402 : Altiris, Altiris Deployment Client
411 : Direct Connect Hub
412 : Direct Connect Client-to-Client
427 : Service Location Protocol (SLP)
443 : HTTPS (Hypertext Transfer Protocol over SSL/TLS)
444 : SNPP, Simple Network Paging Protocol (RFC 1568)
445 : Microsoft-DS Active Directory, Windows shares
445 : Microsoft-DS SMB file sharing
464 : Kerberos Change/Set password
465 : Cisco protocol
465 : SMTP over SSL
475 : tcpnethaspsrv (Aladdin Knowledge Systems Hasp services, TCP/IP version)
497 : Dantz Retrospect
500 : Internet Security Association and Key Management Protocol (ISAKMP)
501 : STMF, Simple Transportation Management Framework-DOT NTCIP 1101
502 : asa-appl-proto, Protocol
502 : Modbus, Protocol
504 : Citadel-multiservice protocol for dedicated clients for the Citadel groupware system
510 : First Class Protocol
512 : Rexec, Remote Process Execution
512 : comsat, together with biff
513 : rlogin
513 : Who
514 : Shell-used to execute non-interactive commands on a remote system (Remote Shell, rsh, remsh)
514 : Syslog-used for system logging
515 : Line Printer Daemon-print service
517 : Talk
518 : NTalk
520 : efs, extended file name server
520 : Routing Information Protocol (RIP)
524 : NetWare Core Protocol (NCP) is used for a variety things such as access to primary NetWare server resources, Time Synchronization, etc.
525 : Timed, Timeserver
530 : RPC
531 : AOL Instant Messenger, IRC
532 : netnews
533 : netwall, For Emergency Broadcasts
540 : UUCP (Unix-to-Unix Copy Protocol)
542 : commerce (Commerce Applications)
543 : klogin, Kerberos login
544 : kshell, Kerberos Remote shell
545 : OSIsoft PI (VMS), OSISoft PI Server Client Access
546 : DHCPv6 client
547 : DHCPv6 server
548 : Apple Filing Protocol (AFP) over TCP
550 : new-rwho, new-who
554 : Real Time Streaming Protocol (RTSP)
556 : Remotefs, RFS, rfs_server
560 : rmonitor, Remote Monitor
561 : monitor
563 : NNTP protocol over TLS/SSL (NNTPS)
587 : e-mail message submission (SMTP)
591 : FileMaker 6.0 (and later) Web Sharing (HTTP Alternate, also see port 80)
593 : HTTP RPC Ep Map, Remote procedure call over Hypertext Transfer Protocol, often used by Distributed Component Object Model services and Microsoft Exchange Server
604 : TUNNEL profile, a protocol for BEEP peers to form an application layer tunnel
623 : ASF Remote Management and Control Protocol (ASF-RMCP)
631 : Internet Printing Protocol (IPP)
631 : Common Unix Printing System (CUPS)
635 : RLZ DBase
636 : Lightweight Directory Access Protocol over TLS/SSL (LDAPS)
639 : MSDP, Multicast Source Discovery Protocol
641 : SupportSoft Nexus Remote Command (control/listening): A proxy gateway connecting remote control traffic
646 : LDP, Label Distribution Protocol, a routing protocol used in MPLS networks
647 : DHCP Failover protocol
648 : RRP (Registry Registrar Protocol)
651 : IEEE-MMS
652 : DTCP, Dynamic Tunnel Configuration Protocol
653 : SupportSoft Nexus Remote Command (data): A proxy gateway connecting remote control traffic
654 : Media Management System (MMS) Media Management Protocol (MMP)
657 : IBM RMC (Remote monitoring and Control) protocol
660 : Mac OS X Server administration
665 : sun-dr, Remote Dynamic Reconfiguration
666 : Doom, first online first-person shooter
674 : ACAP (Application Configuration Access Protocol)
691 : MS Exchange Routing
692 : Hyperwave-ISP
694 : Linux-HA High availability Heartbeat
695 : IEEE-MMS-SSL (IEEE Media Management System over SSL)
698 : OLSR (Optimized Link State Routing)
699 : Access Network
700 : EPP (Extensible Provisioning Protocol)
701 : LMP (Link Management Protocol (Internet)), a protocol that runs between a pair of nodes and is used to manage traffic engineering (TE) links
702 : IRIS (Internet Registry Information Service) over BEEP (Blocks Extensible Exchange Protocol) (RFC 3983)
706 : Secure Internet Live Conferencing (SILC)
711 : Cisco Tag Distribution Protocol-being replaced by the MPLS Label Distribution Protocol
712 : Topology Broadcast based on Reverse-Path Forwarding routing protocol (TBRPF) (RFC 3684)
712 : Promise RAID Controller
720 : SMQP, Simple Message Queue Protocol
749 : Kerberos (protocol) administration
750 : rfile
750 : loadav
750 : kerberos-iv, Kerberos version IV
751 : pump
751 : kerberos_master, Kerberos authentication
752 : qrh
752 : qrh
752 : passwd_server, Kerberos Password (kpasswd) server
753 : Reverse Routing Header (rrh)
753 : Reverse Routing Header (rrh)
753 : userreg_server, Kerberos userreg server
754 : tell send
754 : krb5_prop, Kerberos v5 slave propagation
754 : tell send
760 : ns
760 : krbupdate , Kerberos registration
782 : Conserver serial-console management server
783 : SpamAssassin spamd daemon
829 : CMP (Certificate Management Protocol)
843 : Adobe Flash socket policy server
847 : DHCP Failover protocol
860 : iSCSI (RFC 3720)
873 : rsync file synchronisation protocol
888 : cddbp, CD DataBase (CDDB) protocol (CDDBP)-unassigned but widespread use
901 : Samba Web Administration Tool (SWAT)
901 : VMware Virtual Infrastructure Client (UDP from server being managed to management console)
901 : VMware Virtual Infrastructure Client (UDP from server being managed to management console)
902 : ideafarm-door 902/tcp self documenting Door: send 0x00 for info
902 : VMware Server Console (TCP from management console to server being Managed)
902 : ideafarm-door
902 : VMware Server Console (UDP from server being managed to management console)
903 : VMware Remote Console
904 : VMware Server Alternate (if 902 is in use, i.e. SUSE linux)
911 : Network Console on Acid (NCA)-local tty redirection over OpenSSH
953 : Domain Name System (DNS) RNDC Service
981 : SofaWare Technologies Remote HTTPS management for firewall devices running embedded Check Point FireWall-1 software
987 : This Secure Hypertext Transfer Protocol (HTTPS) port makes Windows SharePoint Services viewable through Remote Web Workplace
989 : FTPS Protocol (data): FTP over TLS/SSL
990 : FTPS Protocol (control): FTP over TLS/SSL
991 : NAS (Netnews Administration System)
992 : TELNET protocol over TLS/SSL
993 : Internet Message Access Protocol over SSL (IMAPS)
995 : Post Office Protocol 3 over TLS/SSL (POP3S)
999 : ScimoreDB Database System
1001 : JtoMB
1002 : Opsware agent (aka cogbot)
1023 : Reserved
1024 : Reserved
