A host-only network will only allow communication between the VMWare host and the VMs. There is no access to the VMs outside of the host.
In the screenshot of the VM Network Editor, your host-only network is 192.168.248.0/24. That is the subnet you must pick from for your addresses in the simulator. The VMNet1 device on the host system is probably using 192.168.248.1, so pick something other than that for your simulator.