Security·4,711 discussions

How do I fix DNS queries overload problem?

Tags: Browser, Security, Web development

Dear All Experts

I’m facing a big problem in DNS queries recently it happens two times daily i guess with over 700 dns queries and it used to be even more like 1300 in just single second , it seems as some sort of sophisticated DNS DDOS attack or something , any tips or ways to help and avoid such ones.

problem shown in photo below.

https://snipboard.io/5MRVK3.jpg

Topic

The usual fix is

In reply to How do I fix DNS queries overload problem?

To use a RATE LIMITER on the DNS (server.) This is well discussed on the web but I won’t be able to help you since I don’t see the details about your server.

Example: https://medium.com/nlnetlabs/dns-response-rate-limiting-as-implemented-in-nsd-60249dba83d5

Yes, that’s from 2012. I use this example because limiting response rates has been around for decades.

[Author]

Replies