Client side stuck on "Retrieving directory listing"

[Torus]

When trying to connect to the server on port 21 it successfully logs in with the credentials but fails to get the directory and then the connection bombs out shortly after.

Client side log (using filezilla also):
Status: Connecting to X.X.X.X:21...
Status: Connection established, waiting for welcome message...
Status: Initializing TLS...
Status: TLS connection established.
Status: Logged in
Status: Retrieving directory listing...
Command: PWD
Response: 257 "/" is current directory.
Command: TYPE I
Response: 200 Type set to I
Command: PASV
Response: 227 Entering Passive Mode (X,X,X,X,X,X)
Command: MLSD
Response: 150 About to start data transfer.
Error: Connection timed out after 20 seconds of inactivity
Error: Failed to retrieve directory listing

Server side:
2024-03-28T14:10:02.747Z << [FTP Session 1917 X] 220-FileZilla Pro Enterprise Server 1.6.7
2024-03-28T14:10:02.747Z << [FTP Session 1917 X] 220 Please visit https://filezilla-project.org/
2024-03-28T14:10:02.762Z >> [FTP Session 1917 X] AUTH TLS
2024-03-28T14:10:02.762Z << [FTP Session 1917 X] 234 Using authentication type TLS.
2024-03-28T14:10:02.778Z !! [FTP Session 1917 X] GnuTLS error -87: No supported cipher suites have been found.
2024-03-28T14:10:02.778Z !! [FTP Session 1917 X] Control channel closed with error from source 0. Reason: ECONNABORTED - Connection aborted.

Firewall ports checked on both the windows server and router and all looks completely fine.

Connections work on port 22 no problem.

Any suggestions?

[boco]

Using outdated versions of FileZilla PES and most probably the client, too. Use the latest version of both.

As you are a PES customer, please head over to the dedicated Pro forums. These forums are for the free versions, only.

viewtopic.php?f=2&t=50124

Closing here.