Connectivity test between client and domain controller in windows

There are several ways to test the connectivity between a client and a domain controller in a Windows environment:

Ping

Use the command prompt to ping the domain controller by IP address or hostname. If the ping is successful, it indicates that the client can reach the domain controller.

nslookup

Use the command prompt to run an nslookup command for the domain controller’s hostname. If the nslookup returns the correct IP address for the domain controller, it indicates that the client can resolve the domain controller’s hostname.

Telnet

Use the command prompt to telnet to the domain controller on port 389 (LDAP) or port 3268 (global catalog). If you are able to connect, it indicates that the client can reach the domain controller on that port.

Active Directory Users and Computers: On the client machine, open the Active Directory Users and Computers MMC snap-in. If you are able to connect to the domain controller and view the domain tree, it indicates that the client can reach the domain controller.

Dcdiag

Use dcdiag command line tool to test the domain controller’s functionality and connectivity. This can be run on the client machine or on the domain controller itself.

Netstat

Use the command prompt to check if the client machine has an established connection to the domain controller by running netstat -ano | findstr “389” or netstat -ano | findstr “3268” .

These are a few examples of testing the connectivity between client and domain controller, depending on the specific requirements and setup of your environment, other tools or methodologies may be used to ensure that the communication is established.