Cannot see one device in WAN to WAN connected network

  • Dear friends

    I have 2 ESX hosts, in one I created network, another and connected them between 2 installations of pfsense via IPsec WAN toWAN.

    Connection works perfectly, I can ping easily from one network to another.

    But I have one problem I do not understand.

    In network I have device (qnap machine) with address This device is connected to ESX host and ESX virtual switch via NIC and network cable. This device has permament IP.

    I can ping it from network without any problem. But I cannot ping it and access from network and I do not understand why.

    Can you please advice?

    Many thanks


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