HCIA附录-常用协议的端口号
| FTP-Data | 20或其他随机端口 |
| FTP-Control | 21 |
| Telnet | 23 |
| Smtp | 25 |
| Http | 80 |
| Pop3 | 110 |
| IRC | 194 |
| Https | 443 |
| Ms-sql-s | 1433 |
| MSN Message | 1863 |
| 终端服务 | 3389 |
| HTTP备用 | 8008 |
| HTTP备用 | 8080 |
| Tftp | 69 |
| RIP | 520 |
| Ms-sql-m | 1434 |
| DNS | 53 |
| SNMP | 161 |
| FTP-Data | 20或其他随机端口 |
| FTP-Control | 21 |
| Telnet | 23 |
| Smtp | 25 |
| Http | 80 |
| Pop3 | 110 |
| IRC | 194 |
| Https | 443 |
| Ms-sql-s | 1433 |
| MSN Message | 1863 |
| 终端服务 | 3389 |
| HTTP备用 | 8008 |
| HTTP备用 | 8080 |
| Tftp | 69 |
| RIP | 520 |
| Ms-sql-m | 1434 |
| DNS | 53 |
| SNMP | 161 |