I have an Hikvision OEM NR32P4-4, that is connected to my Unifi Switch. My 3 hikvision cameras are plugged into my NVR. How do I access my cameras via web browser to update their firmwares? Their ip addresses are 192.168.254.1 which isn't a range that is on my network (10.10.20.188 is the ip of the NVR). Thanks.