TCP Port Numbers Commonly Used by Macintosh Services
For the latest information on port numbers see the IANA port list.
| Port | Usage | Reference | Notes |
| 20 | FTP Data | RFC 959 | Only used as a source port |
| 21 | FTP Control | RFC 959 | |
| 22 | SSH (secure shell remote login) | SSH RFC | |
| 23 | Telnet | RFC 854 | Common port for attacks |
| 25 | SMTP (email) | RFC 821, 822 | |
| 53 | DNS | RFC 1034, 1035 | Mainly uses UDP, not TCP |
| 70 | Gopher | RFC 1436 | |
| 79 | Finger | RFC 1288 | |
| 80 | HTTP (Web) | RFC 1945 | |
| 88 | Kerberos | RFC 1510 | |
| 105 | PH (directory) | ||
| 106 | Poppass (change password) | Wesleyan tech note | |
| 110 | POP3 (email) | RFC 1081, 1082 | |
| 111 | Remote Procedure Call (RPC) | RFC 1057 | Used for many Unix applications |
| 113 | AUTH | RFC 931 | |
| 115 | SFTP | RFC 913 | |
| 119 | NNTP (News) | RFC 977 | |
| 139 | NETBIOS Session | RFCs 1001, 1002 | Windows access (ASIP 6) |
| 143 | IMAP (new email) | RFC 2060 | |
| 311 | AppleShare Web Admin | ASIP Tech note | ASIP 6.1 and later |
| 384 | ARNS (tunneling) | Univ. of Melbourne | |
| 387 | AURP (tunneling) | RFC 1504 | |
| 389 | LDAP (directory) | RFC 1777, 1778 | |
| 407 | Timbuktu 5.2 or later | Netopia technote | Previous versions use other ports |
| 427 | SLP (service location) | RFC 2165 | Only uses TCP for large responses |
| 443 | HTTP over SSL (HTTPS) | Draft RFC | |
| 445 | MS Directory Service | ||
| 465 | SMTP over SSL (SSMTP) | ||
| 497 | Retrospect | UDP for finding clients | |
| 510 | FirstClass server | SoftArc tech note | |
| 515 | LPR (printing) | RFC 1179 | |
| 548 | AFP (AppleShare) | AFP 2.2 spec | |
| 554 | RTSP (QuickTime server) | Apple tech note | Also uses UDP 6970+ |
| 591 | FileMaker Pro Web | FileMaker tech note | Recommended alternate to 80 |
| 625 | Remote Open Directory Proxy (DSProxy) | Unregistered usage, registered to DEC/DLM | |
| 626 | IMAP Admin | Apple extension in ASIP 6 | |
| 631 | IPP (Internet Printing Protocol) | RFCs 2565-2569 | Available in Mac OS X 10.2 through CUPS |
| 636 | LDAP over TLS/SSL (LDAPS) | RFC 2246 | |
| 660 | ASIP Remote Admin | ASIP 6.3 and later | |
| 666 | Now Contact Server | Eudora tech note | Violates actual port assignment |
| 687 | ASIP Shared UG Port | ASIP Tech note | ASIP 6.2 and later |
| 1080 | WebSTAR Admin | StarNine FAQ | WebSTAR port number plus 1000 |
| 1417 | Timbuktu Control (pre-5.2) | Netopia technote | Login is through UDP Port 407 |
| 1418 | Timbuktu Observe (pre-5.2) | Netopia technote | Login is through UDP Port 407 |
| 1419 | Timbuktu Send Files (pre-5.2) | Netopia technote | Login is through UDP Port 407 |
| 1420 | Timbuktu Exchange (pre-5.2) | Netopia technote | Login is through UDP Port 407 |
| 1443 | WebSTAR/SSL Admin | StarNine FAQ | WebSTAR port number plus 1000 |
| 3031 | Program Linking (Apple Events) | Mac OS 9 and later | |
| 3659 | Apple SASL | Upcoming assignment | |
| 4000 | Now Public Event Server | Eudora tech note | |
| 4199 | EIMS Admin | EIMS Users Guide | |
| 4347 | LANsurveyor Responders | Neon tech note | Uses UDP also |
| 5003 | FileMaker Pro | FileMaker tech note | Direct access, not through Web; UDP for host list |
| 5190 | AOL Instant Messenger | AOL tech note | |
| 5498 | Hotline Tracker | Hotline tech note | UDP port 5499 for finding servers |
| 5500 | Hotline Server | Hotline tech note | |
| 5501 | Hotline Server | Hotline tech note | |
| 6346 | Gnutella | Gnutella news item | |
| 6699 | Napster/Macster client | Apparent usage | Used when server is in "firewall mode" |
| 7070 | Real Player | Real tech note | Also UDP ports 6970-7170 |
| 7648 | CuSeeMe (video) | White pine tech note | Client connections; UDP for audio/video |
| 7649 | CuSeeMe (video) | White pine tech note | Connection establishment. |
| 8080 | Common HTTP alternate | RFC 1945 | |
| 16080 | Web Performance Cache | ||
| 19813 | 4D server | ACI US tech note | Previously 14566 (6.0 and earlier) |
UDP Port Numbers Commonly Used by Macintosh Services
| Port | Usage | Reference | Notes |
| 53 | DNS | Sometimes uses TCP | |
| 68 | Dynamic Host Configuration Protocol (DHCP) | RFC 2131 | Commonly used to obtain a Mac's IP address |
| 69 | Trivial File Transfer Protocol (TFTP) | RFC 783 | |
| 123 | Network Time Protocol | RFC 1305 | |
| 137 | Windows Name Service | RFC 1001 | |
| 138 | Windows Datagram Service | RFC 1001 | |
| 161 | Simple Network Management Protocol (SNMP) | RFC 1157 | |
| 407 | Timbuktu | Netopia technote | Handshaking only, prior to version 5.2 |
| 458 | QuickTime TV | ||
| 497 | Retrospect | Finding clients on the network | |
| 514 | Syslog | ||
| 554 | Real Time Streaming Protocol (QuickTime) | RFC 2326 | |
| 2049 | Network File System (NFS) | RFC 1813 | |
| 3283 | Apple Remote Desktop (formerly known as Network Assistant) | TIL Note | |
| 5003 | FileMaker Pro | FileMaker tech note | For obtaining host list |
| 5353 | Zeroconf - Rendezvous | Zeroconf | Used in Rendezvous |
| 5060 | SIP - iChat AV | RFC 3261,RFC 3262,RFC 3263,RFC 3264,RFC 3265 | Used in iChat AV |
| 6970 and up | QuickTime and RealPlayer | TIL Note | |
| 7070 | RTSP alternate (RealPlayer) | Support Note |
Date Created: 2003-01-29 10:35:03 Date Last Modified: 2004-09-29 08:33:35