端口号
20 FTP data transfer
21 FTP control (command)
22 SSH
23 Telnet
25 SMTP
587 SNMPS
53 dns
67 dhserver
68 dhclient
80 http
110 pop3
995 pop3s
123 ntpd
161 snmpd
162 snmptrapd
443 https
389 LDAP
143 IMAP
993 IMAPS
1433 MSSQL
3306 MYSQL
1521 ORACLE
5986 PowerShell
3389 Remote Desktop
3128 SQUID
6379 Redis