| ポート番号 | プロトコル |
|---|---|
| 20,21 | FTP |
| 22 | SSH |
| 23 | TELNET |
| 25 | SMTP(メール送信) |
| 53 | DNS |
| 80 | HTTP |
| 110 | POP3(メール受信) |
| 443 | HTTPS |
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