Wing FTP Software

Hi everyone, i have Wing FTP 7.0.1 installed on a CentOS Linux 8 (Core) server, Kernel: Linux 4.18.0-193.28.1.el8_2.x86_64
When connecting with explicit TLS, users sometimes work correctly, while sometimes they receive error 550 Cannot LIST. No permission.
The user obviously has listing rights.
Any ideas?

[02] Mon, 07 Feb 2022 07:15:03 (0340144) Connected from 111.222.333.444 (local address 192.168.111.222, port 21)
[04] Mon, 07 Feb 2022 07:15:03 (0340144) 220 Wing FTP Server ready...
[03] Mon, 07 Feb 2022 07:15:03 (0340144) USER username
[04] Mon, 07 Feb 2022 07:15:03 (0340144) 331 Password required for username
[03] Mon, 07 Feb 2022 07:15:03 (0340144) PASS **********
[04] Mon, 07 Feb 2022 07:15:03 (0340144) 230 User username logged in.
[03] Mon, 07 Feb 2022 07:15:03 (0340144) OPTS utf8 on
[04] Mon, 07 Feb 2022 07:15:03 (0340144) 200 OPTS UTF8 ON
[03] Mon, 07 Feb 2022 07:15:03 (0340144) PWD
[04] Mon, 07 Feb 2022 07:15:03 (0340144) 257 "/" is current directory.
[03] Mon, 07 Feb 2022 07:15:03 (0340144) TYPE I
[04] Mon, 07 Feb 2022 07:15:03 (0340144) 200 Type set to I
[03] Mon, 07 Feb 2022 07:15:03 (0340144) PASV
[04] Mon, 07 Feb 2022 07:15:03 (0340144) 227 Entering Passive Mode (444,333,222,111,57,85)
[03] Mon, 07 Feb 2022 07:15:03 (0340144) NLST *.csv
[04] Mon, 07 Feb 2022 07:15:03 (0340144) 550 Cannot LIST. No permission.
[02] Mon, 07 Feb 2022 07:15:03 (0340144) Closed session, disconnected from 111.222.333.444

Yes, it means you don't have "List" permission on the home folder, or maybe caused by the subfolder rules, you can check it by yourself.

List permission is set, in most cases the list command works, without TLS it always works. But with TLS, sometimes it happens that with the LIST command, the error is returned.
The user has ALL rights in a unique folder set ad root.

The FTP command "LIST *.csv" or "NLST *.csv" has no problem, I just tested with the same command on my computer, file listing works correctly. And your previous logs show that you connected with plain text FTP, not TLS connection.

If you still can't figure it out, please contact us via email, we will help you solve the issue.