^ Port  ^ Protocol ^ Service name ^ Description ^ Alt. ports ^
|    20 | TCP | ftp-data | FTP | |
|    21 | TCP | ftp | FTP control | |
|    23 | TCP | telnet | Telnet | |
|    25 | TCP | smtp | SMTP relaying | 465 (deprecated) |
|    53 | UDP | | DNS | |
|    67 \\ 68| UDP | | DHCP/BootP | |
|    69 | UDP | tftp | Trivial File Transfer Protocol | |
|   110 | TCP | pop3 | POP (no encryption) | |
|   123 | UDP | ntp | Network Time Protocol | |
|   143 | TCP | imap | IMAP (no encryption) | |
|   161 | UDP | snmp | Simple Network Management Protocol | |
|   389 | TCP | ldap | Lightweight Directory Access Protocol | |
|   445 | TCP | microsoft-ds | SMB | 139 |
|   500 | UDP | isakmp | ISAKMP/IKE/IKEv2 VPN | |
|   514 | UDP | syslog | syslog | |
|   515 | TCP | printer | Line Printer Daemon *LPD ) | |
|   548 | TCP | afpovertcp | Apple Filing Protocol (AFP) | |
|   587 | TCP | submission | SMTP submission | |
|   636 | TCP | ldaps | Secure LDAP | |
|   993 | TCP | imaps | IMAP SSL | |
|   995 | TCP/UDP | pop3s | POP SSL | |
|  1701 | UDP | l2f | L2TP VPN | |
|  1723 | TCP | pptp | PPTP VPN | |
|  2049 | TCP/UDP | nfsd | Network File System (NFS) | |
|  3306 | TCP | mysql | MySQL/MariaDB | |
|  3389 | TCP | | Remote Desktop Protocol (RDP) | |
|  5222 | TCP | jabber-client | Jabber (XMPP)
|  5900 | TCP | vnc-server | Apple Remote Desktop (Observe/Control) | |
|  5900 | TCP | vnc-server | VNC | 5901, 5902 etc. |

===== Not-so-common ports =====
^ Port  ^ Protocol ^ Description ^ Alt. ports ^
|  6379 | TCP | redis server | |
|  8384 | TCP | Syncthing interface (HTTP) | |
|  9091 | TCP | Default transmission remote interface (HTTP) | |
| 25565 | TCP | Minecraft server | |

[[https://support.apple.com/en-us/HT202944|TCP and UDP ports used by Apple software products]]