Wifi(lan2) to LAN Issues on port 443 only

[magoo_it]

Hi to all,
3 Net's :: WAN, LAN & WIFI

I'm facing a weird issue on my 2.5 PF:

I have removed the Squid from it, and now my WIFI LAN, connected to an external router (AP mode), isn't capable of pass port 443 traffic between the Wifi Lan and the Internal LAN. All other ports are working fine, the issue seems to be only on port 443 and for the Internal LAN.

The connection using port 443 to the WWW is working normally and with no issues.
I just can't connect to my internal web servers over 443, but, for instance, if I use 8443 all is good, and port 80, and DNS to the AD server, and Logins, etc ...

I spent the last 10hrs trying but I cannot find the culprit or a way to debug it.
If I setup the Squid for the Wifi LAN all works again, so:

• It's not a machine (PC) firewall problem, afaik;
• PF can communicate using the squid, but not without it ??

How can I troubleshoot this?

PS - Sorry if it is a bit messy writing, but I'm also tired. Hope someone can shine some light on this .

Regards.
JG