The industrial router mbNET / mbNET.mini, the data modem mbSPIDER and the software mbDIALUP are establishing an outgoing VPN connection via one of the three TCP-ports (80, 443 or 1194) to the portal mbCONNECT24.
As default, the VPN connection will be established via TCP-port 1194. This port must be released for an outgoing TCP connection in the firewall. So, that the devices and the software are able to reach / connect on mbCONNECT24 via the respective TCP-port.
Please note: With mbCHECK software you can check, which Ports are generally open / closed in the firewall. Under the following URL you may find mbCHECK for the respective server: https://downloads.mbconnectline.com/
According to the server you are using, the following IP addresses / Domains must be released with the respective TCP-port in the firewall additionaly:
rsp.mbCONNECT24 (USA / CANADA)