PS C:\WINDOWS\system32> ftp 192.168.1.1
Connected to 192.168.1.1.
220 (vsFTPd 3.0.2)
200 Always in UTF8 mode.
User (192.168.1.1:(none)): useradmin
331 Please specify the password.
Password:
230 Login successful.
ftp> cd ..
550 Permission denied.
ftp> cd var
550 Failed to change directory.
ftp> cd var
550 Failed to change directory.
ftp> cd config
550 Failed to change directory.
ftp> cd config
550 Failed to change directory.
ftp> get lastgood.xml c:aa.xml
200 PORT command successful. Consider using PASV.
550 Failed to open file.
ftp>
请问这怎么解决