There are actually 65,536 ports, because there is port 0 :) well, don't scan port 0 :) scan from port 1 to other port! e.g port range: from 1 to 65535
port 0 - tcp/udp Reserved
... ... ... ... ... ...
port 21 is about FTP
22 SSH
23 TELNET
25 or 2525 SMTP
53 DNS
80 HTTP
110 POP3
115 SFTP
135 RPC epmap
137 netbios-name service
138 netbios-dgm datagram service
139 NetBIOS-ssn session service
143 IMAP
194 IRC
443 SSL https
445 SMB | microsoft-ds
465 Secure SMTP (SSMTP)
585 Secure IMAP (IMAP4-SSL)
993 IMAP4 over SSL(IMAPS)
995 Secure POP3 (SSL-POP)
1080 socks
1433 MSSQL microsoft sql server
3128 ndl-aas Active
3306 MySQL
3389 Remote Desktop
5632 PCAnywhere
5900 VNC
6112 Warcraft III :)
6660-6669 IRC (irc client port 6667)
8080 http-alt common http proxy / second web server port just http alternate:)
... ... ... ... ... ...
port 65535 - some trojans on tcp / on udp some games like: Lord of the Rings Battle for Middle Earth 2 Dark Ages of Camelot Final Fantasy
USE MY DESKTOP APP: 'ETI PORT SCANNER' FOR WINDOWS