Re: [Proftpd-user] Proftpd with mod_sftp not working on Ubuntu 2022.04 - "error decrypting"

> I'm looking into using proftpd solution in production for our 
> enterprise environment, as an SFTP and FTPS server.
> All tests run so far on Ubuntu 2020 since February seem to be ok, but 
> for production we decided to give Ubuntu 2022 a try.
>
> All went ok, up to testing SFTP using mod_sftp, which always fails, 
> giving this error in the sftp logs:
> "error decrypting aes256-ctr data from client: (unknown)"
> Tried multiple encryption algorithms, all give the same result.
>
> Questions for this list, is has anyone one make mod_sftp work on Ubuntu 
> 2022? And if yes, can I get some help on how that was done?

See:
  https://github.com/proftpd/proftpd/issues/1448

Ubuntu 22.04 changed their main OpenSSL version to be 3.x.  OpenSSL 3.x has many API and implementation differences, thus the above unexpected changes in behavior.

I'll try to do releases soon, so that hopefully the Ubuntu 22.04 repositories will pick up the necessary ProFTPD changes to properly support using OpenSSL 3.x

TJ


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