7 TCP/UDP echo 792 echo - 20 TCP File Transport Protocol (FTP) 959 ftp-data - 21 TCP FTP control 959 ftp - 22 TCP Secure Shell (SSH) 4250 - 4254 ssh - 23 TCP Telnet 854 telnet - 25 TCP Simple Mail Transfer Protocol (SMTP) 5321 smtp

Mail (for sending email); MobileMe Mail (sending)

53 TCP/UDP Domain Name System (DNS) 1034 domain MacDNS, FaceTime 67 UDP Bootstrap Protocol Server (BootP, bootps) 951 bootps NetBoot via DHCP 68 UDP Bootstrap Protocol Client (bootpc) 951 bootpc NetBoot via DHCP 69 UDP Trivial File Transfer Protocol (TFTP) 1350 tftp - 79 TCP Finger 1288 finger - 80 TCP Hypertext Transfer Protocol (HTTP) 2616 http World Wide Web, MobileMe, QuickTime Installer, iTunes Store and Radio, Software Update, RAID Admin, Backup, iCal calendar publishing, iWeb, WebDAV (iDisk), Final Cut Server, AirPlay, OS X Lion Internet Restore. 88 TCP Kerberos 4120 kerberos - 106 TCP Password Server
(Unregistered Use) - 3com-tsmux Mac OS X Server Password Server 110 TCP Post Office Protocol (POP3)
Authenticated Post Office Protocol (APOP) 1939 pop3 Mail (for receiving email) 111 TCP/UDP Remote Procedure Call (RPC) 1057, 1831 sunrpc Portmap (sunrpc) 113 TCP Identification Protocol 1413 ident - 115 TCP Secure File Transfer Program (SFTP) 913 sftp Note: Some authorities reference a "Simple File Transport Protocol" or "Secured File Transport Protocol" on this port. 119 TCP Network News Transfer Protocol (NNTP) 3977 nntp Used by applications that read newsgroups. 123 TCP/UDP Network Time Protocol (NTP) 1305 ntp Date & Time preferences. Used for network time server synchronization, AppleTV Network Time Server Sync 137 UDP Windows Internet Naming Service (WINS) - netbios-ns - 138 UDP NETBIOS Datagram Service - netbios-dgm Windows Datagram Service, Windows Network Neighborhood 139 TCP Server Message Block (SMB) - netbios-ssn Used by Microsoft Windows file and print services, such as Windows Sharing in Mac OS X. 143 TCP Internet Message Access Protocol (IMAP) 3501 imap Mail (for receiving email); MobileMe Mail (IMAP) 161 UDP Simple Network Management Protocol (SNMP) 1157 snmp - 192 UDP OSU Network Monitoring System - osu-nms AirPort Base Station PPP status or discovery (certain configurations), AirPort Admin Utility, AirPort Express Assistant 311 TCP Server Admin, Workgroup Manager, Server Monitor, Xsan Admin - asip-webadmin Remote server administration 389 TCP Lightweight Directory Access Protocol (LDAP) 4511 ldap Used by applications that look up addresses, such as Mail and Address Book. 427 TCP/UDP Service Location Protocol (SLP) 2608 svrloc Network Browser 443 TCP Secure Sockets Layer (SSL, or "HTTPS") 2818 https TLS websites, iTunes Store, FaceTime, Game Center, MobileMe (authentication, iDisk, iDisk Sync, and MobileMe Sync), AirPlay, OS X Lion Internet Restore. 445 TCP Microsoft SMB Domain Server - microsoft-ds - 464 TCP/UDP kpasswd 3244 kpasswd - 497 TCP/UDP Dantz Retrospect - dantz - 500 UDP ISAKMP/IKE - isakmp Mac OS X Server VPN service, Back to My Mac (MobileMe, Mac OS X v10.5 or later). 514 TCP shell - shell - 514 UDP Syslog - syslog - 515 TCP Line Printer (LPR), Line Printer Daemon (LPD) - printer Used for printing to a network printer, Printer Sharing in Mac OS X. 532 TCP netnews - netnews - 548 TCP Apple Filing Protocol (AFP) over TCP - afpovertcp AppleShare, Personal File Sharing, Apple File Service 554 TCP/UDP Real Time Streaming Protocol (RTSP) 2326 rtsp QuickTime Streaming Server (QTSS), streaming media players, AirPlay 587 TCP Message Submission for Mail (Authenticated SMTP) 4409 submission Mail (for sending mail), MobileMe Mail (SMTP authentication) 600-1023 TCP/UDP Mac OS X RPC-based services - ipcserver Used by NetInfo, for example. 623 UDP Lights-Out-Monitoring - asf-rmcp Used by Intel Xserves' Lights-Out-Monitoring (LOM) feature; used by Server Monitor 625 TCP Directory Service Proxy (DSProxy) (Unregistered Use) - dec_dlm DirectoryService, Open Directory Assistant, Workgroup Manager. Note: This port is registered to DEC DLM. 626 TCP AppleShare Imap Admin (ASIA) - asia IMAP Administration (Mac OS X Server 10.2.8 or earlier, AppleShare IP 6) 626 UDP serialnumberd (Unregistered Use) - asia Server serial number registration (Xsan, Mac OS X Server v10.3 - v10.6) 631 TCP Internet Printing Protocol (IPP) 2910 ipp Mac OS X Printer Sharing, Printing to many common printers 636 TCP Secure LDAP - ldaps - 660 TCP MacOS Server Admin - mac-srvr-admin Server Admin (both AppleShare IP and Mac OS X Server), Server settings 687 TCP Add server Admin to uses - asipregistry - 749 TCP/UDP Kerberos 5 admin/changepw - kerberos-adm - 985 TCP NetInfo Static Port - - - 993 TCP Mail IMAP SSL - imaps MobileMe Mail (SSL IMAP) 995 TCP/UDP Mail POP SSL - pop3s - 1085 TCP/UDP WebObjects - webobjects - 1099 & 8043 TCP Remote RMI and IIOP Acess to JBOSS - rmiregistry - 1220 TCP QT Server Admin - qt-serveradmin Used for administration of QuickTime Streaming Server. 1649 TCP IP Failover - kermit - 1701 UDP L2TP - l2f Mac OS X Server VPN service 1723 TCP PPTP - pptp Mac OS X Server VPN service 2049 TCP/UDP Network File System (NFS) (version 3) 1094 nfsd - 2195 TCP Apple Push Notification Service (APNS) - - Push notifications 2196 TCP Apple Push Notification Service (APNS) - - Feedback service 2336 TCP Mobile account sync - appleugcontrol Home directory synchronization 3004 TCP iSync - csoftragent - 3031 TCP/UDP Remote AppleEvents - eppc Program Linking, Remote Apple Events 3283 TCP/UDP Net Assistant - net-assistant Apple Remote Desktop 2.0 or later (Reporting feature) 3306 TCP MySQL - mysql - 3478-3497 UDP - - nat-stun-port - ipether232port FaceTime, Game Center 3632 TCP Distributed compiler - distcc - 3659 TCP/UDP Simple Authentication and Security Layer (SASL) - apple-sasl Mac OS X Server Password Server 3689 TCP Digital Audio Access Protocol (DAAP) - daap iTunes Music Sharing, AirPlay 4111 TCP XGrid - xgrid - 4398 UDP - - - Game Center 4488 TCP/UDP Apple Wide Area Connectivity Service