On 19-4-2018 20:03, Lukas Gradl firebird@... [firebird-support] wrote:

> I work from a debian linux machine having installen the 3.0.1 client
> libs from the repository and flamerobin from the repository.
>
> One of the machines I have to connect to regularily runs 1.5.5 on
> debian linux.
>
> Since upgrading the client to version 3 I can't connect anymore - I
> get a "connection rejected by remote interface"
>
> Unfortunatly upgrading the server is not an option.
>
> I can connect to servers running 2.5 without any problems and I could
> connect to that 1.5 server too before upgrading the client.
>
> Anyone an idea why I can't connect to that 1.5 server with the current libs?

Is there a firebird.conf in the same location as the libfbclient in
question? If so, what is its value of AuthClient, and of WireCrypt?

I also vaguely recall an issue with Firebird 3.0.1 where it would
terminate authentication early in some situations (but I thought that
was server-side, not client-side). You might want to upgrade to Firebird
3.0.3 and check if that works.

Mark
--
Mark Rotteveel