No, 192.168.60.2(nethserver) gateway is 192.168.60.1 as its behind a router.
this requirement behind the scenario is,
01.subnet 54.0 is only having internet connection and users who are in the 54 subnet their http and https traffic route to 192.168.54.40(let’s say gateway is 192.168.54.40)
02.subnet 60.0 doesnn’t have internet connection in physically place in there and subnet 60.0 getway is 192.168.60.1
now the requirement is place nethserver in subnet 60.0 and configure installed nethserver to communicate upstream connection with192.168.54.40 proxy for internet access of subnet 60.0 clients