Common TCP Ports

The TCP/IP protocol assigns ports to standard software so it can send data to the correct software when it is all running on a single machine.

These are just the ones that I've needed to use in the past. The complete official list. is maintained by IANA

Port	Description
20	FTP - data
21	FTP - control
22	Secure Shell (SSH)
23	Telnet
25	SMTP
53	DNS
67	DHCP
68	DHCP
69	TFTP
80	HTTP
110	POP3
123	Network Time Protocol (NTP)
161	SNMP
220	IMAP
366	SMTP
389	LDAP
443	HTTPS
631	Internet Printing Protocol (IPP)
993	IMAP4 SSL
995	POP3 SSL
1433	Microsoft SQLServer
3306	MySQL
3389	Remote Desktop Protocol (RDP)
5432	PostgreSQL
6379	Redis

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