Basic TCP/UDP ports Cheat Sheet (DRAFT) by guillerba

20	FTP	File Transfer Protocol
21	FTP	File Transfer Protocol (Control)
22	SSH	Secure Shell
23	Telnet	Telnet
25	SMTP	Simple Mail Transfer Protocol
53	DNS	Domain Name System
80	HTTP	Hypertext Transfer Protocol
110	POP3	Post Office Protocol v3
119	NNTP	Network News Transfer Protocol
123	NTP	Network Time Protocol
143	IMAP	Internet Message Access Protocol
161	SNMP	Simple Network Management Protocol
194	IRC	Internet Relay Chat

443	HTTPS	HTTP Secure
465	SMTPS	SMTP Secure
514	Syslog	Syslog
587	SMTP	SMTP (Submi­ssion)
993	IMAPS	IMAP Secure
995	POP3S	POP3 Secure
1433	SQL Server	Microsoft SQL Server
3306	MySQL	MySQL
3389	RDP	Remote Desktop Protocol
5432	PostgreSQL	PostgreSQL
5900	VNC	Virtual Network Computing
8080	HTTP	HTTP (Alter­native)