Re: [Proftpd-user] 1.3.7e + openssl 3.0.2 on Ubuntu 22.04 LTS large file problem?

>>>>> "TJ" == TJ Saunders <[email protected]> writes:

>> I've had a customer run into a problem where they tried uploading
>> files larger than 2gb to our Ubuntu 22.04 LTS server, where I had
>> self-compiled proftpd 1.3.7e (but most likely on 21.04!) and they
>> would randomly break when sending files.
>> 
>> I'm really only using mod_sftp on this host to allow customers to
>> send/get files from us.

> There aren't any ProFTPD-imposed file size limitations by default.
> That said, for SFTP transfers, some clients do not handle rekeying
> well (a similar phenomenon occurs for FTPS clients and
> renegotiations).  And the default behavior for mod_sftp is to
> request rekeying after 1 hour, or 2GB, whichever comes first:

>   http://www.proftpd.org/docs/contrib/mod_sftp.html#SFTPRekey

> So as an initial guess/experiment, you see if disabling SFTP
> rekeying improves (or at least changes) the situation:

>   <IfModule mod_sftp.c>
>     ...
>     SFTPRekey none
>   </IfModule>

> Hope this helps,
> TJ

Thanks, I'll try this out tomorrow and see how it goes.  


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