sftp filezilla cant connect login stopped working after upgrading ubuntu 20

Hi I upgraded to ubuntu 20 and now I can’t connect using filezilla sftp.

I’ve tried a couple things but no luck.

I can connect using SSH like this -

ssh user@12.345.67.891 The authenticity of host ‘12.345.67.891 (12.345.67.891)’ can’t be established. ECDSA key fingerprint is SHA256:UJ0gg08e0RuTvhrsktQYy70RzO8mM6i9wlYm8oVztHU. Are you sure you want to continue connecting (yes/no/[fingerprint])? yes Warning: Permanently added ‘12.345.67.891’ (ECDSA) to the list of known hosts. sftp user@12.345.67.891 user@12.345.67.891 password: Connected to 12.345.67.891. sftp> exit

Why doesn’t it let filezilla connect?

I’ve compared the old sshd_config file with the new sshd_config post ubuntu upgrade and they are exactly the same.

Here’s a snippet from /var/log/auth.log… Does this look right?

Oct 26 04:45:23 spock sshd[33510]: Received disconnect from port 49278:11: Unsupported cipher [preauth] Oct 26 04:45:23 spock sshd[33510]: Disconnected from port 49278 [preauth] Oct 26 04:45:44 spock sshd[35532]: rexec line 16: Deprecated option UsePrivilegeSeparation Oct 26 04:45:44 spock sshd[35532]: rexec line 19: Deprecated option KeyRegenerationInterval Oct 26 04:45:44 spock sshd[35532]: rexec line 20: Deprecated option ServerKeyBits Oct 26 04:45:44 spock sshd[35532]: rexec line 31: Deprecated option RSAAuthentication Oct 26 04:45:44 spock sshd[35532]: rexec line 38: Deprecated option RhostsRSAAuthenticatio

Please can someone point me in the right direction?

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Hi @twc8ac35a8636,

The first thing I can say which might be a bit of a stretch is to make sure you are using port 22 in FileZilla.

Additionally, try and allow your IP in your firewall for all ports just to see if that would help out.

Another suggestion is to use a Key with Filezilla rather than a Password, I think that was possible as well. Just to see if it would work.