Top 1000 Well Known Ports
https://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers
Port | TCP | UDP | IANA status | Description | SCTP |
---|---|---|---|---|---|
0 | Reserved | Reserved | Official | ||
N/A | N/A | Unofficial | In programming APIs (not in communication between hosts), requests a system-allocated (dynamic) port | ||
1 | Yes | Assigned | Official | TCP Port Service Multiplexer (TCPMUX). Historic. Both TCP and UDP have been assigned to TCPMUX by IANA, but by design only TCP is specified. | |
5 | Assigned | Assigned | Official | Remote Job Entry was historically using socket 5 in its old socket form, while MIB PIM has identified it as TCP/5 and IANA has assigned both TCP and UDP 5 to it. | |
7 | Yes | Yes | Official | ||
9 | Yes | Yes | Official | Yes | |
No | Yes | Unofficial | |||
11 | Yes | Yes | Official | Active Users (systat service) | |
13 | Yes | Yes | Official | ||
15 | Yes | No | Unofficial | Previously netstat servic | |
17 | Yes | Yes | Official | Quote of the Day (QOTD) | |
18 | Yes | Yes | Official | ||
19 | Yes | Yes | Official | Character Generator Protocol (CHARGEN) | |
20 | Yes | Assigned | Official | File Transfer Protocol (FTP) data transfer | Yes |
21 | Yes | Assigned | Official | File Transfer Protocol (FTP) control (command) | Yes |
22 | Yes | Assigned | Official | Secure Shell (SSH), secure logins, file transfers (scp, sftp) and port forwarding | Yes |
23 | Yes | Assigned | Official | Telnet protocol—unencrypted text communications | |
25 | Yes | Assigned | Official | Simple Mail Transfer Protocol (SMTP), used for email routing between mail servers | |
37 | Yes | Yes | Official | ||
42 | Assigned | Yes | Official | ||
43 | Yes | Assigned | Official | WHOIS protocol | |
47 | Reserved | Reserved | Official | ||
49 | Yes | Yes | Official | ||
51 | Reserved | Reserved | Official | Historically used for Interface Message Processor logical address management, entry has been removed by IANA on 2013-05-25 | |
52 | Assigned | Assigned | Official | Xerox Network Systems (XNS) Time Protocol. Despite this port being assigned by IANA, the service is meant to work on SPP (ancestor of IPX/SPX), instead of TCP/IP. | |
53 | Yes | Yes | Official | Domain Name System (DNS) | |
54 | Assigned | Assigned | Official | ||
56 | Assigned | Assigned | Official | ||
58 | Assigned | Assigned | Official | ||
61 | Reserved | Reserved | Official | Historically assigned to the NIFTP-Based Mail protocol, but was never documented in the related IEN. The port number entry was removed from IANA's registry on 2017-05-18. | |
67 | Assigned | Yes | Official | Bootstrap Protocol (BOOTP) server; also used by Dynamic Host Configuration Protocol (DHCP) | |
68 | Assigned | Yes | Official | Bootstrap Protocol (BOOTP) client; also used by Dynamic Host Configuration Protocol (DHCP) | |
69 | Assigned | Yes | Official | ||
70 | Yes | Assigned | Official | Gopher protocol | |
71–74 | Yes | Yes | Official | NETRJS protocol | |
79 | Yes | Assigned | Official | ||
80 | Yes | Assigned | Official | Hypertext Transfer Protocol (HTTP) | Yes |
No | Yes | Unofficial | QUIC, a transport protocol over UDP (still in draft as of April 2020), using stream multiplexing, encryption by default with TLS, and currently supporting HTTP/2. QUIC has been renamed to HTTP/3, which is currently an Internet Draft. | ||
82 | Yes | Unofficial | TorPark control | ||
83 | Yes | Assigned | Official | MIT ML Device, networking file system | |
88 | Yes | Assigned | Official | Kerberos authentication system | |
90 | Yes | Yes | Unofficial | ||
95 | Yes | Assigned | Official | SUPDUP, terminal-independent remote login | |
101 | Yes | Assigned | Official | ||
102 | Yes | Assigned | Official | ||
104 | Yes | Yes | Official | Digital Imaging and Communications in Medicine (DICOM; also port 11112) | |
105 | Yes | Yes | Official | ||
107 | Yes | Yes | Official | Remote User Telnet Service (RTelnet) | |
108 | Yes | Yes | Official | IBM Systems Network Architecture (SNA) gateway access server | |
109 | Yes | Assigned | Official | Post Office Protocol, version 2 (POP2) | |
110 | Yes | Assigned | Official | Post Office Protocol, version 3 (POP3) | |
111 | Yes | Yes | Official | Open Network Computing Remote Procedure Call (ONC RPC, sometimes referred to as Sun RPC) | |
113 | Yes | No | Official | ||
Yes | Assigned | Official | Authentication Service (auth), the predecessor to identification protocol. Used to determine a user's identity of a particular TCP connection. | ||
115 | Yes | Assigned | Official | ||
117 | Yes | Yes | Official | UUCP Mapping Project (path service) | |
118 | Yes | Yes | Official | Structured Query Language (SQL) Services | |
119 | Yes | Assigned | Official | Network News Transfer Protocol (NNTP), retrieval of newsgroup messages | |
123 | Assigned | Yes | Official | Network Time Protocol (NTP), used for time synchronization | |
126 | Yes | Yes | Official | Formerly Unisys Unitary Login, renamed by Unisys to NXEdit. Used by Unisys Programmer's Workbench for Clearpath MCP, an IDE for Unisys MCP software development | |
135 | Yes | Yes | Official | ||
Yes | Yes | Official | |||
137 | Yes | Yes | Official | NetBIOS Name Service, used for name registration and resolution | |
138 | Assigned | Yes | Official | NetBIOS Datagram Service | |
139 | Yes | Assigned | Official | NetBIOS Session Service | |
143 | Yes | Assigned | Official | Internet Message Access Protocol (IMAP),management of electronic mail messages on a server | |
152 | Yes | Yes | Official | ||
153 | Yes | Yes | Official | Simple Gateway Monitoring Protocol (SGMP), a protocol for remote inspection and alteration of gateway management information | |
156 | Yes | Yes | Official | Structured Query Language (SQL) Service | |
158 | Yes | Yes | Official | Distributed Mail System Protocol (DMSP, sometimes referred to as Pcmail) | |
161 | Assigned | Yes | Official | ||
162 | Yes | Yes | Official | Simple Network Management Protocol Trap (SNMPTRAP) | |
170 | Yes | Yes | Official | Network PostScript print server | |
177 | Yes | Yes | Official | X Display Manager Control Protocol (XDMCP), used for remote logins to an X Display Manager server | |
179 | Yes | Assigned | Official | Border Gateway Protocol (BGP),[77] used to exchange routing and reachability information among autonomous systems (AS) on the Internet | Yes |
194 | Yes | Yes | Official | Internet Relay Chat (IRC) | |
199 | Yes | Yes | Official | SNMP Unix Multiplexer (SMUX) | |
201 | Yes | Yes | Official | AppleTalk Routing Maintenance | |
209 | Yes | Assigned | Official | ||
210 | Yes | Yes | Official | ||
213 | Yes | Yes | Official | ||
218 | Yes | Yes | Official | Message posting protocol (MPP) | |
220 | Yes | Yes | Official | Internet Message Access Protocol (IMAP), version 3 | |
225–241 | Reserved | Reserved | Official | ||
249–255 | Reserved | Reserved | Official | ||
259 | Yes | Yes | Official | Efficient Short Remote Operations (ESRO) | |
262 | Yes | Yes | Official | Arcisdms | |
264 | Yes | Yes | Official | ||
280 | Yes | Yes | Official | http-mgmt | |
300 | Yes | Unofficial | ThinLinc Web Access | ||
308 | Yes | Official | Novastor Online Backup | ||
311 | Yes | Assigned | Official | Mac OS X Server Admin (officially AppleShare IP Web administration) | |
318 | Yes | Yes | Official | PKIX Time Stamp Protocol (TSP) | |
319 | Yes | Official | Precision Time Protocol (PTP) event messages | ||
320 | Yes | Official | Precision Time Protocol (PTP) general messages | ||
350 | Yes | Yes | Official | Mapping of Airline Traffic over Internet Protocol (MATIP) type A | |
351 | Yes | Yes | Official | MATIP type B | |
356 | Yes | Yes | Official | cloanto-net-1 (used by Cloanto Amiga Explorer and VMs) | |
366 | Yes | Yes | Official | On-Demand Mail Relay (ODMR) | |
369 | Yes | Yes | Official | Rpc2portmap | |
370 | Yes | Yes | Official | codaauth2, Coda authentication server | |
Yes | Official | securecast1, outgoing packets to NAI's SecureCast servers. As of 2000 | |||
371 | Yes | Yes | Official | ClearCase albd | |
383 | Yes | Yes | Official | HP data alarm manager | |
384 | Yes | Yes | Official | A Remote Network Server System | |
387 | Yes | Yes | Official | AURP (AppleTalk Update-based Routing Protocol) | |
388 | Yes | Assigned | Official | Unidata LDM near real-time data distribution protocol | |
389 | Yes | Assigned | Official | ||
399 | Yes | Yes | Official | Digital Equipment Corporation DECnet+ (Phase V) over TCP/IP (RFC1859) | |
401 | Yes | Yes | Official | ||
427 | Yes | Yes | Official | ||
433 | Yes | Yes | Official | NNSP, part of Network News Transfer Protocol | |
434 | Yes | Yes | Official | ||
443 | Yes | Assigned | Official | Yes | |
No | Yes | Unofficial | Quick UDP Internet Connections (QUIC), a transport protocol over UDP (still in draft as of July 2018), using stream multiplexing, encryption by default with TLS, and currently supporting HTTP/2. | ||
444 | Yes | Yes | Official | ||
445 | Yes | Yes | Official | Microsoft-DS (Directory Services) Active Directory, Windows shares | |
Yes | Assigned | Official | Microsoft-DS (Directory Services) SMB file sharing | ||
464 | Yes | Yes | Official | Kerberos Change/Set password | |
465 | Yes | No | Official | URL Rendezvous Directory for SSM (Cisco protocol)[importance?] | |
Yes | No | Official | |||
475 | Yes | Yes | Official | tcpnethaspsrv, Aladdin Knowledge Systems Hasp services | |
491 | Yes | Unofficial | |||
497 | Yes | Yes | Official | ||
500 | Assigned | Yes | Official | ||
502 | Yes | Yes | Official | Modbus Protocol | |
504 | Yes | Yes | Official | Citadel, multiservice protocol for dedicated clients for the Citadel groupware system | |
510 | Yes | Yes | Official | FirstClass Protocol (FCP), used by FirstClass client/server groupware system | |
512 | Yes | Official | Rexec, Remote Process Execution | ||
Yes | Official | comsat, together with biff | |||
513 | Yes | Official | |||
Yes | Official | Who | |||
514 | Yes | Unofficial | Remote Shell, used to execute non-interactive commands on a remote system (Remote Shell, rsh, remsh) | ||
No | Yes | Official | Syslog, used for system logging | ||
515 | Yes | Assigned | Official | Line Printer Daemon (LPD),[10] print service | |
517 | Yes | Official | Talk | ||
518 | Yes | Official | NTalk | ||
520 | Yes | Official | efs, extended file name server | ||
Yes | Official | ||||
521 | Yes | Official | |||
524 | Yes | Yes | Official | NetWare Core Protocol (NCP) is used for a variety things such as access to primary NetWare server resources, Time Synchronization, etc. | |
525 | Yes | Official | Timed, Timeserver | ||
530 | Yes | Yes | Official | Remote procedure call (RPC) | |
532 | Yes | Assigned | Official | netnews | |
533 | Yes | Official | netwall, For Emergency Broadcasts | ||
540 | Yes | Official | Unix-to-Unix Copy Protocol (UUCP) | ||
542 | Yes | Yes | Official | commerce (Commerce Applications) | |
543 | Yes | Official | klogin, Kerberos login | ||
544 | Yes | Official | kshell, Kerberos Remote shell | ||
546 | Yes | Yes | Official | DHCPv6 client | |
547 | Yes | Yes | Official | DHCPv6 server | |
548 | Yes | Assigned | Official | Apple Filing Protocol (AFP) over TCP | |
550 | Yes | Yes | Official | new-rwho, new-who | |
554 | Yes | Yes | Official | Real Time Streaming Protocol (RTSP) | |
556 | Yes | Official | Remotefs, RFS, rfs_server | ||
560 | Yes | Official | rmonitor, Remote Monitor | ||
561 | Yes | Official | monitor | ||
563 | Yes | Yes | Official | ||
564 | Yes | Unofficial | |||
585 | Port 993 | ? | Unofficial | Legacy use of Internet Message Access Protocol over TLS/SSL (IMAPS), now in use at port 993. | |
587 | Yes | Assigned | Official | ||
591 | Yes | Official | FileMaker 6.0 (and later) Web Sharing (HTTP Alternate, also see port 80) | ||
593 | Yes | Yes | Official | HTTP RPC Ep Map, Remote procedure call over Hypertext Transfer Protocol, often used by Distributed Component Object Model services and Microsoft Exchange Server | |
601 | Yes | Official | Reliable Syslog Service — used for system logging | ||
604 | Yes | Official | TUNNEL profile, a protocol for BEEP peers to form an application layer tunnel | ||
623 | Yes | Official | ASF Remote Management and Control Protocol (ASF-RMCP) & IPMI Remote Management Protocol | ||
625 | Yes | No | Unofficial | Open Directory Proxy (ODProxy) | |
631 | Yes | Yes | Official | ||
Yes | Yes | Unofficial | Common Unix Printing System (CUPS) administration console (extension to IPP) | ||
635 | Yes | Yes | Official | RLZ DBase | |
636 | Yes | Assigned | Official | Lightweight Directory Access Protocol over TLS/SSL (LDAPS) | |
639 | Yes | Yes | Official | ||
641 | Yes | Yes | Official | SupportSoft Nexus Remote Command (control/listening), a proxy gateway connecting remote control traffic | |
643 | Yes | Yes | Official | SANity | |
646 | Yes | Yes | Official | Label Distribution Protocol (LDP), a routing protocol used in MPLS networks | |
647 | Yes | Official | DHCP Failover protocol | ||
648 | Yes | Official | Registry Registrar Protocol (RRP) | ||
651 | Yes | Yes | Official | IEEE-MMS | |
653 | Yes | Yes | Official | SupportSoft Nexus Remote Command (data), a proxy gateway connecting remote control traffic | |
654 | Yes | Official | Media Management System (MMS) Media Management Protocol (MMP) | ||
655 | Yes | Yes | Official | Tinc VPN daemon | |
657 | Yes | Yes | Official | IBM RMC (Remote monitoring and Control) protocol, used by System p5 AIX Integrated Virtualization Manager (IVM) and Hardware Management Console to connect managed logical partitions (LPAR) to enable dynamic partition reconfiguration | |
660 | Yes | Assigned | Official | Mac OS X Server administration, version 10.4 and earlier | |
Yes | Yes | Official | Doom, first online first-person shooter | ||
Yes | Unofficial | airserv-ng, aircrack-ng's server for remote-controlling wireless devices | |||
674 | Yes | Official | |||
688 | Yes | Yes | Official | REALM-RUSD (ApplianceWare Server Appliance Management Protocol) | |
690 | Yes | Yes | Official | Velneo Application Transfer Protocol (VATP) | |
691 | Yes | Official | |||
694 | Yes | Yes | Official | Linux-HA high-availability heartbeat | |
695 | Yes | Official | |||
698 | Yes | Official | Optimized Link State Routing (OLSR) | ||
700 | Yes | Official | Extensible Provisioning Protocol (EPP), a protocol for communication between domain name registries and registrars (RFC 5734) | ||
701 | Yes | Official | Link Management Protocol (LMP), a protocol that runs between a pair of nodes and is used to manage traffic engineering (TE) links | ||
702 | Yes | Official | |||
706 | Yes | Official | |||
711 | Yes | Official | Cisco Tag Distribution Protocol being replaced by the MPLS Label Distribution Protocol | ||
712 | Yes | Official | |||
749 | Yes | Yes | Official | Kerberos (protocol) administration | |
750 | Yes | Official | kerberos-iv, Kerberos version IV | ||
751 | Yes | Yes | Unofficial | kerberos_master, Kerberos authentication | |
752 | Yes | Unofficial | passwd_server, Kerberos password (kpasswd) server | ||
753 | Yes | Yes | Official | Reverse Routing Header (RRH)[104] | |
Yes | Unofficial | userreg_server, Kerberos userreg server | |||
754 | Yes | Yes | Official | tell send | |
Yes | Unofficial | krb5_prop, Kerberos v5 slave propagation | |||
760 | Yes | Yes | Unofficial | krbupdate [kreg], Kerberos registration | |
782 | Yes | Unofficial | Conserver serial-console management server | ||
783 | Yes | Unofficial | SpamAssassin spamd daemon | ||
800 | Yes | Yes | Official | mdbs-daemon | |
802 | Yes | Yes | Official | MODBUS/TCP Security | |
808 | Yes | Unofficial | Microsoft Net.TCP Port Sharing Service | ||
829 | Yes | Assigned | Official | ||
830 | Yes | Yes | Official | ||
831 | Yes | Yes | Official | NETCONF over BEEP | |
832 | Yes | Yes | Official | ||
833 | Yes | Yes | Official | NETCONF for SOAP over BEEP | |
843 | Yes | Unofficial | |||
847 | Yes | Official | DHCP Failover protocol | ||
848 | Yes | Yes | Official | Group Domain Of Interpretation (GDOI) protocol | |
853 | Yes | Yes | Official | ||
860 | Yes | Official | |||
861 | Yes | Yes | Official | OWAMP control (RFC 4656) | |
862 | Yes | Yes | Official | TWAMP control (RFC 5357) | |
873 | Yes | Official | rsync file synchronization protocol | ||
888 | Yes | Unofficial | cddbp, CD DataBase (CDDB) protocol (CDDBP) | ||
Yes | Unofficial | IBM Endpoint Manager Remote Control | |||
897 | Yes | Yes | Unofficial | Brocade SMI-S RPC | |
898 | Yes | Yes | Unofficial | Brocade SMI-S RPC SSL | |
902 | Yes | Yes | Unofficial | ||
903 | Yes | Unofficial | VMware ESXi | ||
953 | Yes | Reserved | Official | BIND remote name daemon control (RNDC) | |
981 | Yes | Unofficial | Remote HTTPS management for firewall devices running embedded Check Point VPN-1 software | ||
987 | Yes | Unofficial | Microsoft Remote Web Workplace, a feature of Windows Small Business Server | ||
989 | Yes | Yes | Official | ||
990 | Yes | Yes | Official | ||
991 | Yes | Yes | Official | Netnews Administration System (NAS) | |
992 | Yes | Yes | Official | ||
993 | Yes | Assigned | Official | Internet Message Access Protocol over TLS/SSL (IMAPS) | |
994 | Reserved | Reserved | Official | ||
Maybe | Maybe | Unofficial | Internet Relay Chat over TLS/SSL (IRCS). Previously assigned, but not used in common practice. | ||
995 | Yes | Yes | Official | Post Office Protocol 3 over TLS/SSL (POP3S) | |
1010 | Yes | Unofficial | ThinLinc web-based administration interface | ||
1011–1020 | Reserved | Reserved | Official | ||
1023 | Reserved | Reserved | Official | ||
Yes | Yes | Unofficial | z/OS Network File System (NFS) (potentially ports 991–1023) |
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