Why nslookup Shows UNKNOWN (Reverse Lookup DNS Fix)
In this video, we troubleshoot why `nslookup` sometimes shows:
`Default Server: UNKNOWN`
even when DNS and Active Directory appear to be working correctly.
We walk through:
Reverse Lookup Zones
PTR Records
Secure vs Nonsecure Updates
Basic IP Address structure
Why reverse DNS matters in Active Directory
This was recorded in my lab environment using a separated VLAN/testing setup for educational purposes.
If you'd like to see a deeper dive into subnetting, octets, reverse DNS, or Active Directory networking concepts, let me know down in the comments.
#ActiveDirectory #DNS #WindowsServer #SysAdmin #Networking #Homelab #nslookup #Tech