Situation: The client is migrating their DC, DNS and DHCP. The problem they are facing is they don’t have a detail inventory to show which network devices are using Statics IP address and DNS.
Resolution: Use network monitor to check destination IP addresses, age-out so that we can find out which devices are still accessing the old DNS IP addresses. In our example, we run Paloalto Firewall Monitor, add destination DNS IP address 10.0.0.85. It shows GloablProtect Zone still uses this DNS IP address.
Please view this step by step:
