How to join a computer to the domain which is in different network(VLAN)?

This is a real time environment requirement. Let’s see how can we achieve this.

  • Make sure both VLAN’s are communicating
  • Disable windows firewall on the AD machine and Add exceptions to the following ports.
  • Open required ports for DNS, NetBIOS, RPC, LDAP and ICMP in both ways from source to destination.
  • Set the AD gateway as the default gateway for client machine.

Ensure that all the required firewall ports are open to enable communication between domain controller and client which are in different networks.


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