Default deny rule drops is triggered on localhost connection

[flunkyball]

Hi everyone,

I have pfSense 2.7.2 running together with HaProxy configured as https reverse proxy.

HaProxy provides backends via 127.0.0.1:2043 to a frontend at WAN:443 and LAN:443

First of all: I do not experience any functional issues. Everything works as espected.

BUT Iam seeing constant firewall logs blocking traffic from 127.0.0.1 to 127.0.0.1:2043.

Jan 9 18:59:27	 lo0	Default deny rule IPv4 (1000000104)	  127.0.0.1:34233	  127.0.0.1:2043	TCP:RA
Jan 9 18:59:29	 lo0	Default deny rule IPv4 (1000000104)	  127.0.0.1:50557	  127.0.0.1:2043	TCP:RA
Jan 9 18:59:36	 lo0	Default deny rule IPv4 (1000000104)	  127.0.0.1:53420	  127.0.0.1:2043	TCP:RA
Jan 9 18:59:50	 lo0	Default deny rule IPv4 (1000000104)	  127.0.0.1:22978	  127.0.0.1:2043	TCP:RA
Jan 9 18:59:58	 lo0	Default deny rule IPv4 (1000000104)	  127.0.0.1:58847	  127.0.0.1:2043	TCP:RA

A traceroute from source 127.0.0.1 to destination 127.0.0.1 does show no issues or asymetric routing.
Test port from 127.0.0.1 to 127.0.0.1:2043 is executed successfully, however triggers another firewall log entry.

Any idea what could be the reason for that entries ?

Thank you for any hint !