Need help Blocking DNS static route Cisco DPC3825

[chakoman]

Hello, I need to block google DNS to get getflix work (It says proxy error) in some websites.

The problem is that Cisco DPC3825 doesn't have the "Advanced routing" option to block public DNS static route.

Example I need to block this: Network Address: 8.8.8.8
Subnet Mask: 255.255.255.255

and this Network Address: 8.8.4.4
Subnet Mask: 255.255.255.255

Without this tab I don't know how to do it and I'm too noob in these kind of things.

Is there any easy way to block those DNS to get Getflix work?

[Martin Carr]

This is the wrong approach, you need to write an ACL that blocks DNS/UDP 53 destined for those destinations.

In practice this should be done anyway, as it should typically only be your DNS servers that are permitted.

Martin