---- Resolving host address...
---- 1 address found: 35.169.188.224
---- Connecting to ftp2.zyxel.com (35.169.188.224) port 21
<--- 220 (vsFTPd 3.0.2)
---> USER
<--- 331 Please specify the password.
---> PASS
<--- 230 Login successful.
---> PWD
<--- 257 "/"
---> PORT 173,249,29,54,219,103
<--- 550 Permission denied.
---- Switching passive mode on
---> NLST
---> ABOR
---- Closing aborted data socket
---- Closing control socket