Changing Dns Servers

[PradiptoMaheswara53608]

So, I want to change a DNS server to a fast one so I and my Group can Browse easily and in the Network Configuration link and was greeted with this interface.

I'm changing it in a Cisco DPC2320.

What should I do here without causing problem in my internet not functioning?

[Bryan2015]

I can see you're trying to make changes on the Wan interface your internet is polling the IP via DHCP from the services provider, if you change the DNS setting on the wan interface most likely your internet connection will go down, however you can set your LAN to use any other DNS. You will do this under DHCP settings or LAN settings, not sure where you can find it on the router you're using.  

[PradiptoMaheswara53608]

Ow yeah it is a combo of ap and modem not a router
it is a DPC2320 Modem