Issues with KNX/IP and BACnet/IP when using 170.x.x.x network range

[Alberto.ricof]

Hi,

I'm facing a strange issue with a LogicMachine in a project.

Current setup:

LAN network configured as: 170.25.18.x

Web access to the LM works fine

The issue:

ETS cannot connect (error reading device description on port 3671, ping works)

KNXnet/IP tunneling is not working

BACnet/IP export is also not working

However:

Web server works normally

IP connectivity is OK (ping works)

What I have already tried:

Reboot LogicMachine
Reboot router
Factory reset of the LogicMachine (no change in behavior)
Configured ETS interface properly 

My question is:

* Could using a public IP range like 170.x.x.x cause issues with KNX/IP (UDP/multicast) and BACnet/IP?

* Could the LogicMachine or router handle this differently compared to private networks (192.168.x.x / 10.x.x.x)?

Has anyone experienced something similar?

Thanks.

[Daniel]

Yes LM is blocking KNX IP and BAcnet from public IPs due to security as they have zero protections, anyone can access your site and do anything.