I’ve just updated my ipfire from core 167 to core 169.
Unfortunately, my DNS-, Web- and Mail-Server running in DMZ are no longer accessible from the internet. (Going back to core 167 all works fine again)
All has worked for years and many updates whithout any config/rule adaptations.
Can somebody please tell me which config I have to adapt so that my services are accessible with core 169 too?
Do you have something like asymmetric routing in place? If so, you might be impacted by a change made in Core Update 168 - please see this thread for further information.
If not, is there anything related in the firewall logs?