!!VSFTP Urgent problem! Firewall may be! But I do not know how to set up

Entry! The following will make mistakes. . . . . . . . . . . . . .
331 Please specify the password.
Password :
OOPS : 500 missing value in configure file for : -
Login failed.
421 Service not available, remote server has closed connection

Experts to help me! How to set up a firewall

Affixed to the server log out

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