IPSec Site-to-Site OPENsense - PFsense (traffic routing problem)

[jogovogo]

Hello all!

It is about a connection between the above firewalls.

The tunnel builds up in phase one as well as phase two.

Other VPN connection are installed and "up", partly from subnets partly only from single IP addresses. These also work in both directions.

Now currently I have the problem that this one connection, from opensense, only allows packets in one direction.

I can connect from the terminal server in the data center to the intranet of the customer, for example to call a share on a computer.

The other way round it does not work at all, not even a ping.

The firewall rules are set almost identically depending on the IP address or subnet.

Any idea why it only works in one direction?

Regards
Ron