0/TCP,UDP Reserved; do not use 

1/TCP,UDP TCPMUX (TCP port service multiplexer) 

5/TCP,UDP RJE (Remote Job Entry) 

7/TCP,UDP ECHO protocol 

9/TCP,UDP DISCARD protocol 

13/TCP,UDP DAYTIME protocol 

17/TCP,UDP QOTD (Quote of the Day) protocol 

18/TCP,UDP Message Send Protocol 

19/TCP,UDP CHARGEN (Character Generator) protocol 

20/TCP,UDP FTP - data port 

21/TCP,UDP FTP - control (command) port 

22/TCP,UDP SSH (Secure Shell) - used for secure logins, 

file transfers (scp, sftp) and port forwarding. 

23/TCP,UDP Telnet protocol - unencrypted text communications 

25/TCP,UDP SMTP - used for e-mail routing 

between mail servers E-mails 

26/TCP,UDP RSFTP - A simple FTP-like protocol 

35/TCP,UDP QMS Magicolor 2 printer 

37/TCP,UDP TIME protocol 

38/TCP,UDP Route Access Protocol 

39/TCP,UDP Resource Location Protocol 

41/TCP,UDP Graphics 

42/TCP,UDP Host Name Server