Port
| Description
| Status
|
|---|
1/TCP,UDP
| TCP Port Service Multiplexer
| Official
|
2/TCP,UDP
| Management Utility
| Official
|
3/TCP,UDP
| Compression Process
| Official
|
4/TCP,UDP
| Unassigned
| Official
|
5/TCP,UDP
| Remote Job Entry
| Official
|
6/TCP,UDP
| Unassigned
| Official
|
7/TCP,UDP
| Echo
| Official
|
8/TCP,UDP
| Unassigned
| Official
|
9/TCP,UDP
| Discard
| Official
|
11/TCP,UDP
| Active Users
| Official
|
13/TCP,UDP
| DAYTIME – (RFC 867)
| Official
|
17/TCP,UDP
| Quote of the Day
| Official
|
18/TCP,UDP
| Message Send Protocol
| Official
|
19/TCP,UDP
| Character Generator
| Official
|
20/TCP
| FTP – data
| Official
|
21/TCP
| FTP—control (command)
| Official
|
22/TCP,UDP
| Secure Shell (SSH)—used for secure logins, file transfers (scp, sftp) and port forwarding
| Official
|
23/TCP
| Telnet protocol—unencrypted text communications
| Official
|
25/TCP,UDP
| Simple Mail Transfer Protocol (SMTP)—used for e-mail routing between mail servers
| Official
|
34/TCP,UDP
| Remote File (RF)—used to transfer files between machines
| Unofficial
|
35/TCP,UDP
| Any private printer server protocol
| Official
|
35/TCP,UDP
| QMS Magicolor 2 printer server protocol
| Unofficial
|
37/TCP,UDP
| TIME protocol
| Official
|
39/TCP,UDP
| Resource Location Protocol[2] (RLP)—used for determining the location of higher level services from hosts on a network
| Official
|
41/TCP,UDP
| Graphics
| Official
|
42/TCP,UDP
| nameserver, ARPA Host Name Server Protocol
| Official
|
42/TCP,UDP
| WINS
| Unofficial
|
43/TCP
| WHOIS protocol
| Official
|
47/TCP
| GRE protocol
| Official
|
49/TCP,UDP
| TACACS Login Host protocol
| Official
|
52/TCP,UDP
| XNS (Xerox Network Systems) Time Protocol
| Official
|
53/TCP,UDP
| Domain Name System (DNS)
| Official
|
54/TCP,UDP
| XNS (Xerox Network Systems) Clearinghouse
| Official
|
55/TCP,UDP
| ISI-GL (ISI Graphics Language)
| Unofficial
|
56/TCP,UDP
| XNS (Xerox Network Systems) Authentication
| Official
|
56/TCP,UDP
| RAP (Route Access Protocol)[3]
| Unofficial
|
57/TCP
| MTP, Mail Transfer Protocol
| Unofficial
|
58/TCP,UDP
| XNS (Xerox Network Systems) Mail
| Official
|
67/UDP
| Bootstrap Protocol (BOOTP) Server; also used by Dynamic Host Configuration Protocol (DHCP)
| Official
|
68/UDP
| Bootstrap Protocol (BOOTP) Client; also used by Dynamic Host Configuration Protocol (DHCP)
| Official
|
69/UDP
| Trivial File Transfer Protocol (TFTP)
| Official
|
70/TCP
| Gopher protocol
| Official
|
79/TCP
| Finger protocol
| Official
|
80/TCP,UDP
| Hypertext Transfer Protocol (HTTP)
| Official
|
81/TCP
| Torpark—Onion routing
| Unofficial
|
82/UDP
| Torpark—Control
| Unofficial
|
83/TCP
| MIT ML Device
| Official
|
88/TCP,UDP
| Kerberos—authentication system
| Official
|
90/TCP,UDP
| dnsix (DoD Network Security for Information Exchange) Securit Attribute Token Map
| Official
|
90/TCP,UDP
| Pointcast
| Unofficial
|
99/TCP
| WIP Message Protocol
| Unofficial
|
101/TCP
| NIC host name
| Official
|
102/TCP
| ISO-TSAP (Transport Service Access Point) Class 0 protocol[4]
| Official
|
104/TCP,UDP
| ACR/NEMA Digital Imaging and Communications in Medicine
| Official
|
105/TCP,UDP
| CCSO Nameserver Protocol (Qi/Ph)
| Official
|
107/TCP
| Remote TELNET Service[5] protocol
| Official
|
109/TCP
| Post Office Protocol 2 (POP2)
| Official
|
110/TCP
| Post Office Protocol 3 (POP3)
| Official
|
111/TCP,UDP
| Sun Remote Procedure Call
| Official
|
113/UDP
| ident—user identification system, used by IRC servers to identify users
| Official
|
113/TCP,UDP
| Authentication Service (auth)
| Official
|
115/TCP
| Simple File Transfer Protocol (SFTP)
| Official
|
117/TCP
| UUCP Path Service
| Official
|
118/TCP,UDP
| SQL (Structured Query Language) Services
| Official
|
119/TCP
| Network News Transfer Protocol (NNTP)—used for retrieving newsgroup messages
| Official
|
123/UDP
| Network Time Protocol (NTP)—used for time synchronization
| Official
|
135/TCP,UDP
| DCE endpoint resolution
| Official
|
135/TCP,UDP
| Microsoft EPMAP (End Point Mapper), also known as DCE/RPC Locator service[6], used to remotely manage services including DHCP server, DNS server andWINS. Also used by DCOM
| Unofficial
|
137/TCP,UDP
| NetBIOS NetBIOS Name Service
| Official
|
138/TCP,UDP
| NetBIOS NetBIOS Datagram Service
| Official
|
139/TCP,UDP
| NetBIOS NetBIOS Session Service
| Official
|
143/TCP,UDP
| Internet Message Access Protocol (IMAP)—used for retrieving, organizing, and synchronizing e-mail messages
| Official
|
152/TCP,UDP
| Background File Transfer Program (BFTP)[7]
| Official
|
153/TCP,UDP
| SGMP, Simple Gateway Monitoring Protocol
| Official
|
156/TCP,UDP
| SQL Service
| Official
|
158/TCP,UDP
| DMSP, Distributed Mail Service Protocol
| Unofficial
|
161/TCP,UDP
| Simple Network Management Protocol (SNMP)
| Official
|
162/TCP,UDP
| Simple Network Management Protocol Trap (SNMPTRAP)[8]
| Official
|
170/TCP
| Print-srv, Network PostScript
| Official
|
177/TCP,UDP
| X Display Manager Control Protocol (XDMCP)
| Official
|
179/TCP
| BGP (Border Gateway Protocol)
| Official
|
194/TCP,UDP
| IRC (Internet Relay Chat)
| Official
|
199/TCP,UDP
| SMUX, SNMP Unix Multiplexer
| Official
|
201/TCP,UDP
| AppleTalk Routing Maintenance
| Official
|
209/TCP,UDP
| The Quick Mail Transfer Protocol
| Official
|
210/TCP,UDP
| ANSI Z39.50
| Official
|
213/TCP,UDP
| IPX
| Official
|
218/TCP,UDP
| MPP, Message Posting Protocol
| Official
|
220/TCP,UDP
| IMAP, Interactive Mail Access Protocol, version 3
| Official
|
256/TCP,UDP
| 2DEV "2SP" Port
| Unofficial
|
259/TCP,UDP
| ESRO, Efficient Short Remote Operations
| Official
|
264/TCP,UDP
| BGMP, Border Gateway Multicast Protocol
| Official
|
308/TCP
| Novastor Online Backup
| Official
|
311/TCP
| Mac OS X Server Admin (officially AppleShare IP Web administration)
| Official
|
318/TCP,UDP
| PKIX TSP, Time Stamp Protocol
| Official
|
323/TCP,UDP
| IMMP, Internet Message Mapping Protocol
| Unofficial
|
350/TCP,UDP
| MATIP-Type A, Mapping of Airline Traffic over Internet Protocol
| Official
|
351/TCP,UDP
| MATIP-Type B, Mapping of Airline Traffic over Internet Protocol
| Official
|
366/TCP,UDP
| ODMR, On-Demand Mail Relay
| Official
|
369/TCP,UDP
| Rpc2portmap
| Official
|
370/TCP,UDP
| codaauth2 – Coda authentication server
| Unofficial
|
370/TCP,UDP
| securecast1 – Outgoing packets to NAI's servers, http://www.nai.com/asp_set/anti_virus/alerts/faq.as
| Unofficial
|
371/TCP,UDP
| ClearCase albd
| Official
|
383/TCP,UDP
| HP data alarm manager
| Official
|
384/TCP,UDP
| A Remote Network Server System
| Official
|
387/TCP,UDP
| AURP, AppleTalk Update-based Routing Protocol
| Official
|
389/TCP,UDP
| Lightweight Directory Access Protocol (LDAP)
| Official
|
401/TCP,UDP
| UPS Uninterruptible Power Supply
| Official
|
402/TCP
| Altiris, Altiris Deployment Client
| Unofficial
|
411/TCP
| Direct Connect Hub
| Unofficial
|
412/TCP
| Direct Connect Client-to-Client
| Unofficial
|
427/TCP,UDP
| Service Location Protocol (SLP)
| Official
|
443/TCP,UDP
| Hypertext Transfer Protocol over TLS/SSL (HTTPS)
| Official
|
444/TCP,UDP
| SNPP, Simple Network Paging Protocol (RFC 1568)
| Official
|
445/TCP
| Microsoft-DS Active Directory, Windows shares
| Official
|
445/UDP
| Microsoft-DS SMB file sharing
| Official
|
464/TCP,UDP
| Kerberos Change/Set password
| Official
|
465/TCP
| Cisco protocol
| Unofficial
|
465/TCP
| SMTP over SSL
| Unofficial
|
475/TCP
| tcpnethaspsrv (Hasp services, TCP/IP version)
| Official
|
497/TCP
| Dantz Retrospect
| Official
|
500/UDP
| Internet Security Association and Key Management Protocol (ISAKMP)
| Official
|
501/TCP
| STMF, Simple Transportation Management Framework – DOT NTCIP 1101
| Unofficial
|
502/TCP,UDP
| Modbus, Protocol
| Unofficial
|
504/TCP,UDP
| Citadel – multiservice protocol for dedicated clients for the Citadel groupware system
| Official
|
510/TCP
| First Class Protocol
| Unofficial
|
512/TCP
| Rexec, Remote Process Execution
| Official
|
512/UDP
| comsat, together with biff
| Official
|
513/TCP
| Login
| Official
|
513/UDP
| Who
| Official
|
514/TCP
| Shell—used to execute non-interactive commands on a remote system
| Official
|
514/UDP
| Syslog—used for system logging
| Official
|
515/TCP
| Line Printer Daemon—print service
| Official
|
517/UDP
| Talk
| Official
|
518/UDP
| NTalk
| Official
|
520/TCP
| efs, extended file name server
| Official
|
520/UDP
| Routing—RIP
| Official
|
524/TCP,UDP
| NCP (NetWare Core Protocol) is used for a variety things such as access to primary NetWare server resources, Time Synchronization, etc.
| Official
|
525/UDP
| Timed, Timeserver
| Official
|
530/TCP,UDP
| RPC
| Official
|
531/TCP,UDP
| AOL Instant Messenger, IRC
| Unofficial
|
532/TCP
| netnews
| Official
|
533/UDP
| netwall, For Emergency Broadcasts
| Official
|
540/TCP
| UUCP (Unix-to-Unix Copy Protocol)
| Official
|
542/TCP,UDP
| commerce (Commerce Applications)
| Official
|
543/TCP
| klogin, Kerberos login
| Official
|
544/TCP
| kshell, Kerberos Remote shell
| Official
|
545/TCP
| OSIsoft PI (VMS), OSISoft PI Server Client Access
| Unofficial
|
546/TCP,UDP
| DHCPv6 client
| Official
|
547/TCP,UDP
| DHCPv6 server
| Official
|
548/TCP
| Apple Filing Protocol (AFP) over TCP
| Official
|
550/UDP
| new-rwho, new-who
| Official
|
554/TCP,UDP
| Real Time Streaming Protocol (RTSP)
| Official
|
556/TCP
| Remotefs, RFS, rfs_server
| Official
|
560/UDP
| rmonitor, Remote Monitor
| Official
|
561/UDP
| monitor
| Official
|
563/TCP,UDP
| NNTP protocol over TLS/SSL (NNTPS)
| Official
|
587/TCP
| e-mail message submission[9] (SMTP)
| Official
|
591/TCP
| FileMaker 6.0 (and later) Web Sharing (HTTP Alternate, also see port 80)
| Official
|
593/TCP,UDP
| HTTP RPC Ep Map, Remote procedure call over Hypertext Transfer Protocol, often used by Distributed Component Object Model services and Microsoft Exchange Server
| Official
|
604/TCP
| TUNNEL profile[10], a protocol for BEEP peers to form an application layer tunnel
| Official
|
623/UDP
| ASF Remote Management and Control Protocol (ASF-RMCP)
| Official
|
631/TCP,UDP
| Internet Printing Protocol (IPP)
| Official
|
636/TCP,UDP
| Lightweight Directory Access Protocol over TLS/SSL (LDAPS)
| Official
|
639/TCP,UDP
| MSDP, Multicast Source Discovery Protocol
| Official
|
641/TCP,UDP
| SupportSoft Nexus Remote Command (control/listening): A proxy gateway connecting remote control traffic
| Official
|
646/TCP,UDP
| LDP, Label Distribution Protocol, a routing protocol used in MPLS networks
| Official
|
647/TCP
| DHCP Failover protocol[11]
| Official
|
648/TCP
| RRP (Registry Registrar Protocol)[12]
| Official
|
652/TCP
| DTCP, Dynamic Tunnel Configuration Protocol
| Unofficial
|
653/TCP,UDP
| SupportSoft Nexus Remote Command (data): A proxy gateway connecting remote control traffic
| Official
|
654/TCP
| AODV (Ad-hoc On-demand Distance Vector)
| Official
|
655/TCP
| IEEE MMS (IEEE Media Management System)[13][14]
| Official
|
657/TCP,UDP
| IBM RMC (Remote monitoring and Control) protocol, used by System p5 AIX Integrated Virtualization Manager (IVM)[15] and Hardware Management Console to connect managed logical partitions (LPAR) to enable dynamic partition reconfiguration
| Official
|
660/TCP
| Mac OS X Server administration
| Official
|
665/TCP
| sun-dr, Remote Dynamic Reconfiguration
| Unofficial
|
666/UDP
| Doom, first online first-person shooter
| Official
|
674/TCP
| ACAP (Application Configuration Access Protocol)
| Official
|
691/TCP
| MS Exchange Routing
| Official
|
692/TCP
| Hyperwave-ISP
| Official
|
694/TCP,UDP
| Linux-HA High availability Heartbeat
| Official
|
695/TCP
| IEEE-MMS-SSL (IEEE Media Management System over SSL)[16]
| Official
|
698/UDP
| OLSR (Optimized Link State Routing)
| Official
|
699/TCP
| Access Network
| Official
|
700/TCP
| EPP (Extensible Provisioning Protocol), a protocol for communication between domain name registries and registrars (RFC 4934)
| Official
|
701/TCP
| LMP (Link Management Protocol (Internet))[17], a protocol that runs between a pair of nodes and is used to manage traffic engineering (TE) links
| Official
|
702/TCP
| IRIS[18][19] (Internet Registry Information Service) over BEEP (Blocks Extensible Exchange Protocol)[20] (RFC 3983)
| Official
|
706/TCP
| SILC, Secure Internet Live Conferencing
| Official
|
711/TCP
| Cisco TDP, Tag Distribution Protocol[21][22][23]—being replaced by the MPLS Label Distribution Protocol[24]
| Official
|
712/TCP
| TBRPF, Topology Broadcast based on Reverse-Path Forwarding routing protocol (RFC 3684)
| Official
|
712/UDP
| Promise RAID Controller
| Unofficial
|
720/TCP
| SMQP, Simple Message Queue Protocol
| Unofficial
|
749/TCP,UDP
| Kerberos administration
| Official
|
750/TCP
| rfile
| Official
|
750/UDP
| loadav
| Official
|
750/UDP
| kerberos-iv, Kerberos version IV
| Official
|
751/TCP,UDP
| pump
| Official
|
751/TCP,UDP
| kerberos_master, Kerberos authentication
| Unofficial
|
752/TCP
| qrh
| Official
|
752/UDP
| qrh
| Official
|
752/UDP
| userreg_server, Kerberos Password (kpasswd) server
| Unofficial
|
753/TCP
| Reverse Routing Header (rrh)[25]
| Official
|
753/UDP
| Reverse Routing Header (rrh)
| Official
|
753/UDP
| passwd_server, Kerberos userreg server
| Unofficial
|
754/TCP
| tell send
| Official
|
754/TCP
| krb5_prop, Kerberos v5 slave propagation
| Unofficial
|
754/UDP
| tell send
| Official
|
760/TCP,UDP
| ns
| Official
|
760/TCP,UDP
| krbupdate [kreg], Kerberos registration
| Unofficial
|
782/TCP
| Conserver serial-console management server
| Unofficial
|
783/TCP
| SpamAssassin spamd daemon
| Unofficial
|
829/TCP
| CMP (Certificate Management Protocol)
| Unofficial
|
843/TCP
| Adobe Flash socket policy server
| Unofficial
|
860/TCP
| iSCSI (RFC 3720)
| Official
|
873/TCP
| rsync file synchronisation protocol
| Official
|
888/TCP
| cddbp, CD DataBase (CDDB) protocol (CDDBP)—unassigned but widespread use
| Unofficial
|
901/TCP
| Samba Web Administration Tool (SWAT)
| Unofficial
|
901/TCP, UDP
| VMware Virtual Infrastructure Client (UDP from server being managed to management console)
| Unofficial
|
902/TCP
| VMware Server Console (TCP from management console to server being Managed)
| Unofficial
|
902/UDP
| VMware Server Console (UDP from server being managed to management console)
| Unofficial
|
903/TCP
| VMware Remote Console [26]
| Unofficial
|
904/TCP
| VMware Server Alternate (if 902 is in use, i.e. SUSE linux)
| Unofficial
|
911/TCP
| Network Console on Acid (NCA)—local tty redirection over OpenSSH
| Unofficial
|
953/TCP,UDP
| Domain Name System (DNS) RNDC Service
| Unofficial
|
981/TCP
| SofaWare Technologies Remote HTTPS management for firewall devices running embedded Check Point FireWall-1 software
| Unofficial
|
989/TCP,UDP
| FTPS Protocol (data): FTP over TLS/SSL
| Official
|
990/TCP,UDP
| FTPS Protocol (control): FTP over TLS/SSL
| Official
|
991/TCP,UDP
| NAS (Netnews Administration System)
| Official
|
992/TCP,UDP
| TELNET protocol over TLS/SSL
| Official
|
993/TCP
| Internet Message Access Protocol over SSL (IMAPS)
| Official
|
995/TCP
| Post Office Protocol 3 over TLS/SSL (POP3S)
| Official
|
999/TCP
| ScimoreDB Database System
| Unofficial
|
1001/TCP
| JtoMB
| Unofficial
|
1023/TCP,UDP
| Reserved[1]
| Official
|
