WELL KNOWN ports 21 FTP 22 SSH 23 TELNET 25 SMTP 110 POP3 143 IMAP 80 HTTP 115 SFTP (secure ftp) 443 HTTPS (secure https) 445 SMB (utilizzata nell'attacco EternalBlue) 137 138 139 NETBIOS 3389 RDP 3306 MySQL 1433 MS SQL Server (windows)