Network administrators can use this information to make sure that Mac computers and other Apple devices can connect to services such as the App Store and Apple's software-update servers.
Ports used by Apple products
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This is a quick-reference guide showing common examples, not a comprehensive list of ports. This guide is updated periodically with information available at the time of publication.
Some software might use different ports and services, so it can be helpful to use port-watching software when deciding how to set up firewalls or similar access-control schemes.
Some services might use more than one of these ports. For example, a VPN service can use up to four different ports. When you find a product in this list, search (Command-F) in your browser for that name, then repeat your search (Command-G) to locate all occurrences of that product.
Some firewalls allow selective configuration of UDP or TCP ports with the same number, so it's important to know the type of port you're configuring. For example, NFS can use TCP 2049, UDP 2049, or both. If your firewall doesn't allow you to specify the type of port, configuring one type of port probably configures the other.
Port | TCP or UDP | Service or protocol name1 | RFC2 | Service name3 | Used by |
---|---|---|---|---|---|
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), SSH File Transfer Protocol (SFTP), and Secure copy (scp) | 4253 | ssh | Xcode Server (hosted and remote Git+SSH; remote SVN+SSH) |
23 | TCP | Telnet | 854 | telnet | — |
25 | TCP | Simple Mail Transfer Protocol (SMTP) | 5321 | smtp | Mail (sending email); iCloud Mail (sending email) |
53 | TCP/UDP | Domain Name System (DNS) | 1034 | domain | — |
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, FaceTime, iMessage, iCloud, QuickTime Installer, Maps, iTunes U, Apple Music, iTunes Store, Podcasts, Internet Radio, Software Update (OS X Lion or earlier), Mac App Store, RAID Admin, Backup, Calendar, WebDAV, Final Cut Server, AirPlay, macOS Internet Recovery, Profile Manager, Xcode Server (Xcode app, hosted and remote Git HTTP, remote SVN HTTP) |
88 | TCP | Kerberos | 4120 | kerberos | Kerberos, including Screen Sharing authentication |
106 | TCP | Password Server (unregistered use) | — | 3com-tsmux | macOS Server Password Server |
110 | TCP | Post Office Protocol (POP3), Authenticated Post Office Protocol (APOP) | 1939 | pop3 | Mail (receiving email) |
111 | TCP/UDP | Remote Procedure Call (RPC) | 1057, 1831 | sunrpc | Portmap (sunrpc) |
113 | TCP | Identification Protocol | 1413 | ident | — |
119 | TCP | Network News Transfer Protocol (NNTP) | 3977 | nntp | Apps that read newsgroups. |
123 | UDP | Network Time Protocol (NTP) | 1305 | ntp | Date & Time preferences, network time server synchronization, Apple TV 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 | Microsoft Windows file and print services, such as Windows Sharing in macOS |
143 | TCP | Internet Message Access Protocol (IMAP) | 3501 | imap | Mail (receiving email) |
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 | Secure server administration | — | asip-webadmin | Server app, Server Admin, Workgroup Manager, Server Monitor, Xsan Admin |
312 | TCP | Xsan administration | — | vslmp | Xsan Admin (OS X Mountain Lion v10.8 and later) |
389 | TCP | Lightweight Directory Access Protocol (LDAP) | 4511 | ldap | Apps 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, Software Update (OS X Mountain Lion and later), Spotlight Suggestions, Mac App Store, Maps, FaceTime, Game Center, iCloud authentication and DAV Services (Contacts, Calendars, Bookmarks), iCloud backup and apps (Calendars, Contacts, Find My iPhone, Find My Friends, Mail, iMessage, Documents & Photo Stream), iCloud Key Value Store (KVS), iPhoto Journals, AirPlay, macOS Internet Recovery, Profile Manager, Dictation, Siri, Xcode Server (hosted and remote Git HTTPS, remote SVN HTTPS, Apple Developer registration), Push notifications (if necessary) |
445 | TCP | Microsoft SMB Domain Server | — | microsoft-ds | — |
464 | TCP/UDP | kpasswd | 3244 | kpasswd | — |
465 | TCP | Message Submission for Mail (Authenticated SMTP) | smtp (legacy) | Mail (sending mail) | |
500 | UDP | ISAKMP/IKE | 2408 | isakmp | macOS Server VPN service |
500 | UDP | Wi-Fi Calling | 5996 | IKEv2 | Wi-Fi Calling |
514 | TCP | shell | — | shell | — |
514 | UDP | Syslog | — | syslog | — |
515 | TCP | Line Printer (LPR), Line Printer Daemon (LPD) | — | printer | Printing to a network printer, Printer Sharing in macOS |
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 | AirPlay, QuickTime Streaming Server (QTSS), streaming media players |
587 | TCP | Message Submission for Mail (Authenticated SMTP) | 4409 | submission | Mail (sending mail), iCloud Mail (SMTP authentication) |
600–1023 | TCP/UDP | Mac OS X RPC-based services | — | ipcserver | NetInfo |
623 | UDP | Lights-Out-Monitoring | — | asf-rmcp | Lights Out Monitoring (LOM) feature of Intel-based Xserve computers, Server Monitor |
625 | TCP | Open Directory Proxy (ODProxy) (unregistered use) | — | dec_dlm | Open Directory, Server app, Workgroup Manager; Directory Services in OS X Lion or earlier This port is registered to DEC DLM |
626 | TCP | AppleShare Imap Admin (ASIA) | — | asia | IMAP administration (Mac OS X Server v10.2.8 or earlier) |
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 | macOS Printer Sharing, printing to many common printers |
636 | TCP | Secure LDAP | — | ldaps | — |
660 | TCP | Server administration | — | mac-srvr-admin | Server administration tools for Mac OS X Server v10.4 or earlier, including AppleShare IP |
687 | TCP | Server administration | — | asipregistry | Server administration tools for Mac OS X Server v10.6 or earlier, including AppleShare IP |
749 | TCP/UDP | Kerberos 5 admin/changepw | — | kerberos-adm | — |
985 | TCP | NetInfo Static Port | — | — | — |
993 | TCP | Mail IMAP SSL | — | imaps | iCloud Mail (SSL IMAP) |
995 | TCP/UDP | Mail POP SSL | — | pop3s | — |
1085 | TCP/UDP | WebObjects | — | webobjects | — |
1099, 8043 | TCP | Remote RMI and IIOP Access to JBOSS | — | rmiregistry | — |
1220 | TCP | QT Server Admin | — | qt-serveradmin | Administration of QuickTime Streaming Server |
1640 | TCP | Certificate Enrollment Server | — | cert-responder | Profile Manager in macOS Server 5.2 and earlier |
1649 | TCP | IP Failover | — | kermit | — |
1701 | UDP | L2TP | — | l2f | macOS Server VPN service |
1723 | TCP | PPTP | — | pptp | macOS Server VPN service |
1900 | UDP | SSDP | — | ssdp | Bonjour |
2049 | TCP/UDP | Network File System (NFS) (version 3 and 4) | 3530 | nfsd | — |
2195 | TCP | Apple Push Notification Service (APNS) | — | — | Push notifications |
2196 | TCP | Apple Push Notification Service (APNS) | — | — | Feedback service |
2197 | TCP | Apple Push Notification Service (APNS) | — | — | Push notifications |
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), Classroom app (command channel) |
3284 | TCP/UDP | Net Assistant | — | net-assistant | Classroom app (document sharing) |
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 | macOS Server Password Server |
3689 | TCP | Digital Audio Access Protocol (DAAP) | — | daap | iTunes Music Sharing, AirPlay |
3690 | TCP/UDP | Subversion | — | svn | Xcode Server (anonymous remote SVN) |
4111 | TCP | XGrid | — | xgrid | — |
4398 | UDP | — | — | — | Game Center |
4488 | TCP | Apple Wide Area Connectivity Service | awacs-ice | ||
4500 | UDP | IPsec NAT Traversal | 4306 | ipsec-msft | macOS Server VPN service |
4500 | UDP | Wi-Fi Calling | 5996 | IKEv2 | Wi-Fi Calling |
5003 | TCP | FileMaker - name binding and transport | — | fmpro-internal | — |
5009 | TCP | (unregistered use) | — | winfs | AirPort Utility, AirPort Express Assistant |
5100 | TCP | — | — | socalia | macOS camera and scanner sharing |
5222 | TCP | XMPP (Jabber) | 3920 | jabber-client | Jabber messages |
5223 | TCP | Apple Push Notification Service (APNS) | — | — | iCloud DAV Services (Contacts, Calendars, Bookmarks), Push Notifications, FaceTime, iMessage, Game Center, Photo Stream |
5228 | TCP | — | — | — | Spotlight Suggestions, Siri |
5297 | TCP | — | — | — | Messages (local traffic) |
5350 | UDP | NAT Port Mapping Protocol Announcements | — | — | Bonjour |
5351 | UDP | NAT Port Mapping Protocol | — | nat-pmp | Bonjour |
5353 | UDP | Multicast DNS (MDNS) | 3927 | mdns | Bonjour, AirPlay, Home Sharing, Printer Discovery |
5432 | TCP | PostgreSQL | — | postgresql | Can be enabled manually in OS X Lion Server (previously enabled by default for ARD 2.0 Database) |
5897–5898 | UDP | (unregistered use) | — | — | xrdiags |
5900 | TCP | Virtual Network Computing (VNC) (unregistered use) | — | vnc-server | Apple Remote Desktop 2.0 or later (Observe/Control feature) Screen Sharing (Mac OS X 10.5 or later) |
5988 | TCP | WBEM HTTP | — | wbem-http | Apple Remote Desktop 2.x See also dmtf.org/standards/wbem. |
6970–9999 | UDP | — | — | — | QuickTime Streaming Server |
7070 | TCP | RTSP (unregistered use), Automatic Router Configuration Protocol (ARCP) | — | arcp | QuickTime Streaming Server (RTSP) |
7070 | UDP | RTSP alternate | — | arcp | QuickTime Streaming Server |
8000–8999 | TCP | — | — | irdmi | Web service, iTunes Radio streams |
8005 | TCP | Tomcat remote shutdown | — | — | — |
8008 | TCP | iCal service | — | http-alt | Mac OS X Server v10.5 or later |
8080 | TCP | Alternate port for Apache web service | — | http-alt | Also JBOSS HTTP in Mac OS X Server 10.4 or earlier |
8085–8087 | TCP | Wiki service | — | — | Mac OS X Server v10.5 or later |
8088 | TCP | Software Update service | — | radan-http | Mac OS X Server v10.4 or later |
8089 | TCP | Web email rules | — | — | Mac OS X Server v10.6 or later |
8096 | TCP | Web Password Reset | — | — | Mac OS X Server v10.6.3 or later |
8170 | TCP | HTTPS (web service/site) | — | — | Podcast Capture/podcast CLI |
8171 | TCP | HTTP (web service/site) | — | — | Podcast Capture/podcast CLI |
8175 | TCP | Pcast Tunnel | — | — | pcastagentd (such as for control operations and camera) |
8443 | TCP | iCal service (SSL) | — | pcsync-https | Mac OS X Server v10.5 or later (JBOSS HTTPS in Mac OS X Server 10.4 or earlier) |
8800 | TCP | Address Book service | — | sunwebadmin | Mac OS X Server v10.6 or later |
8843 | TCP | Address Book service (SSL) | — | — | Mac OS X Server v10.6 or later |
8821, 8826 | TCP | Stored | — | — | Final Cut Server |
8891 | TCP | ldsd | — | — | Final Cut Server (data transfers) |
9006 | TCP | Tomcat standalone | — | — | Mac OS X Server v10.6 or earlier |
9100 | TCP | Printing | — | — | Printing to certain network printers |
9418 | TCP/UDP | git pack transfer | — | git | Xcode Server (remote git) |
10548 | TCP | Apple Document Sharing Service | — | serverdocs | macOS Server iOS file sharing |
11211 | — | memcached (unregistered use) | — | — | Calendar Server |
16080 | TCP | — | — | — | Web service with performance cache |
16384–16403 | UDP | Real-Time Transport Protocol (RTP), Real-Time Control Protocol (RTCP) | — | connected, — | Messages (Audio RTP, RTCP; Video RTP, RTCP) |
16384–16387 | UDP | Real-Time Transport Protocol (RTP), Real-Time Control Protocol (RTCP) | — | connected, — | FaceTime, Game Center |
16393–16402 | UDP | Real-Time Transport Protocol (RTP), Real-Time Control Protocol (RTCP) | — | — | FaceTime, Game Center |
16403–16472 | UDP | Real-Time Transport Protocol (RTP), Real-Time Control Protocol (RTCP) | — | — | Game Center |
24000–24999 | TCP | — | — | med-ltp | Web service with performance cache |
42000–42999 | TCP | — | — | — | iTunes Radio streams |
49152–65535 | TCP | Xsan | — | — | Xsan Filesystem Access |
49152– 65535 | UDP | — | — | — | |
50003 | — | FileMaker server service | — | — | — |
50006 | — | FileMaker helper service | — | — | — |
1. The service registered with the Internet Assigned Numbers Authority, except where noted as 'unregistered use.'
2. The number of a Request for Comment (RFC) document that defines the service or protocol. RFC documents are maintained by RFC Editor.
3. In the output of Terminal commands, the port number might be replaced by this Service Name, which is the label listed in /etc/services.
FaceTime is not available in all countries or regions.
Learn more
The application firewall in macOS is not a port-based firewall. It controls access by app, instead of by port.
Thanks for installing f.lux.
Your f.lux installer is a .zip file - it should be in your Downloads folder. Install f.lux by double-clicking it.
Once f.lux is installed and running, you should see the f.lux Preferences window appear. Here, you can enter your location and set your usual wake time. f.lux uses this information to create a custom lighting schedule for you.
You can open up Preferences any time to view and change your f.lux settings.
The f.lux menu can always be found to the left of your system clock.
f.lux Preferences
Daytime is whenever the sun is up in your location. By default, f.lux is at 6500K during the daytime, and does not change your screen's color.
If you prefer very warm daytime colors, select Options> Expanded Daytime Settings from the f.lux menu.
Sunset is when the sun has set, but you are awake. If you are an early riser, this is also your pre-sunrise morning setting.
Sunset colors are designed to work well with normal warm white room lighting. If you usually wake up before sunrise, you might prefer a more moderate (4500K or brighter) Sunset setting.
Bedtime is the time before sleep when you're getting ready for bed (or already in it).
The Bedtime setting changes with your wake time. It removes as much alerting light from your screen as possible so that you can feel your body growing tired. You can go to sleep anytime with f.lux - whenever you feel sleepy.
. . .f.lux presets
The f.lux preferences window lets you change and preview settings. There are several presets you can choose from. f.lux will default to the Recommended colors preset.
Recommended colors: Use these for the first week while you get used to the change of colors and discover how you like to use f.lux.
Just tell us whats going on mac os. Custom colors: Custom color control, click the time of day you want to change and then drag the slider to your preferred color temperature.
Classic f.lux: At sunset, f.lux will fade to 3400K, and turn off at sunrise. For large screens this setting is probably not strong enough to remove all alerting light.
Working late: for extreme night owls, removes solar timing and gives 14 hours of bright waking light.
. . .Location
For most machines, f.lux can automatically detect your location with OS X Location Services.
You can also use postal codes (US only), the name of a nearby city, or map coordinates (find them on the map at justgetflux.com/map.html).
If you've been traveling, you might need to update your location. Make sure your computer's internal Timezone settings are correct under System Preferences > Date & Time > Time Zone
. . .Options
Fast transitions: 20 second fade at sunrise and sunset. When unchecked, f.lux changes gradually over one hour.
Sleep in on weekends: For people who want brighter light later on Friday and Saturday nights (and sleep in on Saturday and Sunday mornings)
Extra hour of sleep (ages 13-18): Starts Bedtime one hour earlier for teens and other people who need a little more sleep
Expanded daytime settings: Warmer daytime settings (to 1900K) for people who want to reduce eyestrain or match office lighting
Backwards alarm clock: Calculates how many hours remain until your wake time and gives reminders every thirty minutes when it gets very late
Dim on disable: Gentle fade on disable so it hurts less to check colors
Color Effects
Darkroom: Removes 100% of blue and green light and inverts colors. Darkroom mode also preserves night vision while using a screen.
Movie mode: Lasts 2.5 hours. Preserves colors and shadow detail for watching movies with reduced alerting light.
OS X Dark theme at sunset: Uses the normal theme during the day and switches to dark theme (dock and menu bar) each night at sunset. Disabling f.lux will also disable dark theme.
Disable
For an hour: Disables f.lux for one hour and returns your screen to its normal setting.
Until sunrise: Disables f.lux until your local sunrise.
For current app: Open the app you want to disable f.lux for, then choose this option to disable f.lux whenever a particular app becomes active. You can re-enable f.lux later by opening the app and unchecking this option.
If you often check colors after dark, you might like to use the Dim On Disable setting under Options.
. . .About f.lux
This is where to find what version you have installed, see our contact information, and get a measurement of your screen's current brightness.
Quit f.lux
This will quit the f.lux process and remove the f.lux icon from your menubar. Always quit f.lux before uninstalling or deleting files.
. . .Troubleshooting: Answers to some common OS X questions
Installing
- Click the f.lux Mac download link.
- Click the zip file to expand it
- Double click the 'Flux' application in your Finder window.
- Enter your location and wake time
Uninstalling
- Go to the f.lux Settings panel (to the left of your system clock)
- Choose 'Quit f.lux'
- In Finder, search for 'Flux' and select and delete the f.lux app by dragging it to the trash
Uninstalled but can't delete files
- Open Activity Monitor and select Flux
- Choose Force Quit
- Delete f.lux app by dragging it to the trash
Quit f.lux but the color still remains
Rebooting often fixes any problems with color tint. But if that does not help you, try the following:
- Open Activity Monitor and verify there is no 'Flux' process running
- In Finder, open System Preferences> Displays> Color
- Delete the f.lux profile
- Reboot if needed
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Other video display issues
Some Macbooks were recalled for problems with video hardware. You can check if your model is on the list at: https://www.apple.com/support/macbookpro-videoissues/
Flashing
On dual-GPU machines we write an ICC profile in order to make the 'switch' between video cards more seamless. In some older machines, and every so often, this doesn't work so well. You can use gfx.io to lock to one card, or to read about how this system works and disable if you want, check out our f.lux profile + prefs article.
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If you still have questions about f.lux or need more help, you can check our FAQ or ask a question in our support forum.