Now, in the second example, we'll take a look at NS. Let's say, you have some sort of problem in your network where certain DNS responses are coming back if they can't find any sort of records in your DNS server for a resource, whether it's a web page or a local server; whatever it is, it's not finding the DNS entries. We can apply a coloring rule that will vibrantly show us whenever there's a DNS response that it cannot find a record.
Let's go ahead and create a new capture, and I'm going to look up some random web page that doesn't exist, and we'll use DNS off of Google. We will get a message that it doesn't exist:
So we're going ...
