how to execute the following:

Connectivity Test for Domain Controller

Long on to the bastion instance in the London region $($lubbers$-$shared$),$ ssm connect to that instance, do ping or nectaf

We validate via bastion host to ensure connectivity to the domain controller.

Details $-$ connectivity test includes TCP $389,$ DNS$,$ ICMP to Lubbers DC

You can use nc $/$ netcat to test TCP$/389$ and nslookp to test DNS against the IP$.$