尝试连接到我的 FTP 服务器时，只有 1 个特定用户收到错误 425 无法打开数据连接以传输“/”，他尝试完全禁用防火墙，为我的端口范围和端口 21 添加入站/出站规则，但似乎没有任何效果。我的其他客户端可以正常连接。
(000094)8/13/2022 13:02:45 PM - (not logged in) (IP ADDRESS)> TLS connection established
(000094)8/13/2022 13:02:45 PM - (not logged in) (IP ADDRESS)> USER USERNAME
(000094)8/13/2022 13:02:45 PM - (not logged in) (IP ADDRESS)> 331 Password required for USERNAME
(000094)8/13/2022 13:02:45 PM - (not logged in) (IP ADDRESS)> PASS ***************
(000094)8/13/2022 13:02:45 PM - USERNAME (IP ADDRESS)> 230 Logged on
(000094)8/13/2022 13:02:45 PM - USERNAME (IP ADDRESS)> PBSZ 0
(000094)8/13/2022 13:02:45 PM - USERNAME (IP ADDRESS)> 200 PBSZ=0
(000094)8/13/2022 13:02:45 PM - USERNAME (IP ADDRESS)> PROT P
(000094)8/13/2022 13:02:45 PM - USERNAME (IP ADDRESS)> 200 Protection level set to P
(000094)8/13/2022 13:02:45 PM - USERNAME (IP ADDRESS)> PWD
(000094)8/13/2022 13:02:45 PM - USERNAME (IP ADDRESS)> 257 "/" is current directory.
(000094)8/13/2022 13:02:45 PM - USERNAME (IP ADDRESS)> TYPE I
(000094)8/13/2022 13:02:45 PM - USERNAME (IP ADDRESS)> 200 Type set to I
(000094)8/13/2022 13:02:45 PM - USERNAME (IP ADDRESS)> PORT 192,168,0,180,250,251
(000094)8/13/2022 13:02:45 PM - USERNAME (IP ADDRESS)> 200 Port command successful
(000094)8/13/2022 13:02:45 PM - USERNAME (IP ADDRESS)> MLSD
(000094)8/13/2022 13:02:45 PM - USERNAME (IP ADDRESS)> 150 Opening data channel for directory listing of "/"
(000094)8/13/2022 13:02:56 PM - USERNAME (IP ADDRESS)> 425 Can't open data connection for transfer of "/"