Thread: pgadmin says "SSL error: tlsv1 alert no application protocol"

I was using PGAdmin with PostgreSQL 17 via Traefik 3 successfully since 
many months, but since I recently moved on to PostgresSQL 17 the UI of 
PGAdmin always tells me "SSL error: tlsv1 alert no application 
protocol". All other applications connect successfully.

I do not want to use TLSv1, and neither PostgreSQL 17 nor Traefik 3 is 
explicitly configured to use TLS v1. In PGAdmin I explicitly have set 
the min and max SSL versions to 1.3.

So I do wonder who in this game is using TLSv1 and how to get rid of it?

Thanks!

-Markus

On 12/12/24 11:08, Markus KARG wrote:
> I was using PGAdmin with PostgreSQL 17 via Traefik 3 successfully since 
> many months, but since I recently moved on to PostgresSQL 17 the UI of 
> PGAdmin always tells me "SSL error: tlsv1 alert no application 
> protocol". All other applications connect successfully.
> 
> I do not want to use TLSv1, and neither PostgreSQL 17 nor Traefik 3 is 
> explicitly configured to use TLS v1. In PGAdmin I explicitly have set 
> the min and max SSL versions to 1.3.
> 
> So I do wonder who in this game is using TLSv1 and how to get rid of it?

This is the wrong list for this sort of question.

Ask it over here:

https://www.postgresql.org/list/pgsql-general/

> 
> Thanks!
> 
> -Markus
> 
> 
> 

-- 
Adrian Klaver
adrian.klaver@aklaver.com