TCP Ports
| Port Number | Name | Description |
| 7 | echo | Echo |
| 9 | discard | Discard |
| 13 | daytime | Daytime |
| 19 | chargen | Character generator |
| 20 | ftp-data | FTP data channel |
| 21 | ftp | File Transfer Protocol control channel |
| 22 | ssh | Secure Shell |
| 23 | telnet | Telnet |
| 25 | smtp | Simple Mail Transport Protocol |
| 37 | time | Time |
| 43 | whois | Nickname |
| 49 | tacacs | TAC access control system server connection |
| 53 | domain | Domain Name System zone transfers |
| 70 | gopher | Gopher |
| 79 | finger | Finger |
| 80 | www/http | World Wide Web (HTTP) |
| 101 | hostname | NIC host name server |
| 109 | pop2 | Post Office Protocol v2 |
| 110 | pop3 | Post Office Protocol v3 |
| 111 | sunrpc | Sun remote-procedure call |
| 113 | ident | Ident protocol |
| 119 | nntp | Network News Transport Protocol |
| 179 | bgp | Border Gateway Protocol |
| 194 | irc | Internet Relay Chat |
| 443 | https | Secure http |
| 496 | pim-auto-rp | PIM Auto Rendezvous Point |
| 512 | exec | Remote commands/shell (rsh) |
| 513 | login | Remote login (rlogin) |
| 514 | cmd | Remote commands (rcmd) |
| 514 | syslog | Logging to a syslog server |
| 515 | lpd | Remote printing |
| 517 | talk | Talk |
| 540 | uucp | UNIX-to-UNIX copy program |
| 543 | klogin | Kerberos login |
| 544 | kshell | Kerberos shell |
| 1090 | ucm | Cisco UCM |
| 1500 | ucm database | Cisco UCM Database |
| 2000 | sccp | Signalling Connection Control Part |
| 3000 | RoR | Ruby on Rails |
| 5060 | sip | Session Initiation Protocol |
| 5432 | postgress | Postgress |
| 5900 | vnc | VNC Remote Access |
| 8080 | tomcat | Tomcat, Unifi Inform |
| 8443 | tomcat/open ssl/https | Tomcat/Open SSL/HTTPS |
| 8445 | cisco finesse | Cisco Finesse |
| 9080 | debug | Debugging |
| 12015 | uccx | Cisco UCCX |
UDP Ports
| Port Number | Name | Description |
| 7 | echo | Echo |
| 9 | discard | Discard |
| 37 | time | Time |
| 42 | nameserver | IEN116 name service, which is now obsolete |
| 49 | tacacs | TAC Access Control System |
| 53 | domain | DNS queries and replies |
| 67 | bootps | BootP server |
| 68 | bootpc | BootP client |
| 69 | tftp | Trivial File Transfer Protocol |
| 111 | sunrpc | Sun remote-procedure calls |
| 123 | ntp | Network Time Protocol |
| 137 | netbios-nm | NetBIOS name service |
| 138 | netbios-dgm | NetBIOS datagram service |
| 139 | netbios-ss | NetBIOS session service |
| 161 | snmp | Simple Network Management Protocol |
| 162 | snmptrap | SNMP traps |
| 177 | xdmcp | X Display Manager Control Protocol |
| 195 | dnsix | DNSIX security protocol auditing |
| 434 | mobile-ip | Mobile IP registration |
| 496 | pim-auto-rp | PIM Auto Rendezvous Point |
| 500 | isakmp | Internet Security Association and Key Management Protocol |
| 512 | biff | Biff mail notification and comsat |
| 513 | who | Remote who service (rwho) |
| 514 | syslog | Remote logging of messages |
| 517 | talk | Talk |
| 520 | rip | Routing Information Protocol |
| 3478 | STUN | Unifi STUN Port |
| 4500 | non500-isakmp | ISAKMP on nonstandard port |
Also, this website contains many interesting and troubleshooting topics on Ubiquiti or Unifi, Dell, Cisco, Sonicwall. Do not forget to check out.
Source: Internet, Knowledge Base
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