<![CDATA[502 & 504 Errors with HAProxy when backend is on port 443 SSL with a selfsigned certificate.]]>

<![CDATA[502 & 504 Errors with HAProxy when backend is on port 443 SSL with a selfsigned certificate.]]>Good Day

pfSense version: 25.11.1-RELEASE (amd64)
CPU Type: Intel(R) Xeon(R) CPU D-1537 @ 1.70GHz
RAM : 64GB

HAProxy version: 3.2.7-be4f72d
Maximum connections: 10000 per process.
Number of threads to start per process: 1

I get intermittent errors 502 and 504.
If I use port 80 (not port 443) for the backend I don't seem to get these errors.
There are other backends that use 443 that don't have this issue.

nb. the backends that seems to have a problem are all Debian.

What could it be...

]]>https://forum.netgate.com/topic/200565/502-504-errors-with-haproxy-when-backend-is-on-port-443-ssl-with-a-selfsigned-certificate.RSS for NodeWed, 17 Jun 2026 10:23:50 GMTMon, 20 Apr 2026 14:00:15 GMT60