SFTP connection error for any port other than port 22

Posts: 6 · thespartan 8 Jul 2020, 12:31

Hi

I'm using version 10.24 [Donation Edition] Windows 10 64 Bit (17/05/2020) to sync files over SFTP between Windows 10 to Ubuntu server 18.04 LTS.

Syncing has been working up until recently when I changed the ssh port to 2222 on the server, naturally I updated the SFTP details to include the new port but it fails to connect.

Posts: 17 · simbun 8 Jul 2020, 14:10

I just tried from Windows 10 (FFS 10.25) to Raspbian and Ubuntu 18.04 and changing the port to 2222 worked fine for me.
I trust you restarted ssh?

Have you tried another program e.g. WinSCP?

Posts: 6 · thespartan 8 Jul 2020, 14:26

I just tried from Windows 10 (FFS 10.25) to Raspbian and Ubuntu 18.04 and changing the port to 2222 worked fine for me.
I trust you restarted ssh?

Have you tried another program e.g. WinSCP? simbun, 08 Jul 2020, 14:10

Thanks I did restart ssh, I also tried WinSCP and it worked like a charm no issues whatsoever. At first I thought it was ufw so I disabled it but even with ufw disabled it makes no difference I still get the same error.

I might give FFS 10.25 a whirl and see if it's any better.

Posts: 17 · simbun 8 Jul 2020, 14:57

I just tried with Raspbian and 10.24 and it worked fine on port 2222.

If I try and connect on an incorrect port I receive the following message:

: img.jpg (23.71 KiB) Viewed 3316 times

Given that your message is different, yet you've disabled the firewall (I'm not running one) and WinSCP is working I'm at a bit of a loss. Hopefully someone more knowledgeable will be able to help.

Posts: 6 · thespartan 8 Jul 2020, 15:00

I just tried with Raspbian and 10.24 and it worked fine on port 2222.

If I try and connect on an incorrect port I receive the following message:
img.jpg

Given that your message is different, yet you've disabled the firewall (I'm not running one) and WinSCP is working I'm at a bit of a loss. Hopefully someone more knowledgeable will be able to help. simbun, 08 Jul 2020, 14:57

Thanks I really appreciate the effort, I'm going to try FFS 10.25 and will report back as to whether it resolves the issue.

Posts: 6 · thespartan 8 Jul 2020, 17:40

Same issue for FF1s 10.25 :(

Posts: 6 · thespartan 28 Jul 2020, 13:00

Same issue for FFS 11.0 as well

Posts: 17 · simbun 29 Jul 2020, 11:02

The fact that it worked for me, combined with the lack of support here would suggest that it may be a problem your end.
When you try and connect do you see anything in /var/log/auth.log?
I assume you've disabled any Windows firewall/HIPS you have running?

I haven't tried it and I don't know what the output looks like, but you could try using Process Monitor to trace the problem https://freefilesync.org/faq.php#trace