linux 報錯：telnet Connection closed by foreign host

0.美圖

1.背景

連結kudu 報錯。

# telnet samba.xx.com 7051
Trying 172.xx1.xx.33...
Connected to samba.example.com.
Escape character is '^]'.
Connection closed by foreign host.
           

自動關掉了，這個不是錯誤，可能是telnet不支援這種協定，是被伺服器主動關掉的連結