This shows two different types of DNS Requests. The first one does a "DNS Lookup" by making a type A query:
The configuration of the sensor looks as follows:
DNS Settings
Server IPs |
The IP adresses of one or more DNS servers. |
Query Type |
The type of the query. In this case type 'A' queries a IPv4 address. |
Query Text |
The address which should be checked. In this case 'www.example.com'. |
In contrast, the configuration below shows a reverse DNS lookup via the PTR query:
DNS Settings
Server IPs |
The IP adresses of one or more DNS servers. |
Query Type |
The type of the query. In this case type 'PTR' queries a domain name pointer. |
Query Text |
The address which should be checked. In this case 'www.example.com'. |
