Ok, well thing is... if you used the codes above, you unlikely used passive mode, or did you? Looks like too few ports or an issue with the firewall in general still .
Yeah I specifically used Code: For explicit TLS / SSL: set ftp:ssl-force true connect ftp://ftp.domain.tld I'll play around some more with the firewall settings on the provider side I guess
Ah lol apologies. Just tried with passive mode on and I was able to connect just fine and list dirs as well Code: lftp :~> set ftp:passive-mode on lftp :~> set ftp:ssl-force true lftp :~> connect server.com lftp server.com:~> login user lftp [email protected]:~> ls drwxr-xr-x 11 0 0 4096 Apr 25 14:43 . drwxr-xr-x 11 0 0 4096 Apr 25 14:43 .. drwx------ 2 5016 client6 4096 Apr 25 01:28 .ssh drwxr-xr-x 2 0 0 4096 Apr 25 01:28 backup drwxr-xr-x 2 5016 client6 4096 Mar 4 18:30 cgi-bin drwxr-xr-x 3 0 0 4096 Apr 25 14:43 home drwxr-xr-x 2 0 0 4096 Apr 27 00:08 log drwx--x--- 2 5016 client6 4096 Mar 4 18:30 private drwxr-xr-x 2 0 0 4096 Apr 25 02:24 ssl drwxrwx--- 2 5016 client6 4096 Apr 25 01:28 tmp drwxr-x--x 15 5016 client6 4096 Mar 5 17:02 web
So I completely disabled the provider firewall and retried with filezilla and winscp and was still unable to connect... To confirm the firewall was actually disabled, I accessed the ispconfig portal from a different IP and it loaded up just fine.
Really strange. And even harder to debug ugh. Usually I'd setup a virtual network with some VM at home and use some snapshots of whatever is broken. If that works, it could be a "hidden" firewall or anti ddos implementation gone wrong or whatever imagination can offer :/ A plus for a local lab is, one could watch the local ufw firewall ( which I assume is enabled ) and check if some drop / reject counters increase ; but with a machine on the internet, they always will. Even found (1) something on the net where it is claimed a update-ca-certificates --fresh is part of the solution, though I have a hard time beleiving it, I can not say it's invalid to give it a try. (1) https://askubuntu.com/questions/150...sues-on-ubuntu-22-04-issues-with-dell-library
