Is it possible to close port 53 on the router?

Question

linux

On the router, port 53 is open externally, can it be closed and what will be the consequences?

Answer 1

better to close.
Literally at night, a small such ddos ​​came to the entire range on port 53;) it was hard for client routers with open port 53;)

Answer 2

It's like dns, if you have nothing to give, you can close it.

Answer 3

I think that people who are on the network with a router, who have DNS not your router, but a third-party server located behind the router, simply will not be able to access it ... well, and hence all the consequences

Answer 4

If we are talking about access to the outside, i.e. DNS 53 / UDP, then you can close it, but at least access to your provider must be left. It would also be nice to leave access to the root DNS servers (root DNS servers) and public google DNS servers (8.8.8.8,8.8.4.4).
If you close all access, sites will not open (except for those in the local cache, but this is about 8 hours).