Instance interactive access
Generally, we create Linux instances allowing port 22 to access via SSH.
Using AWS Systems Manager Session Manager instead of directly accessing via SSH we don't need inbound rules to open ports in Security Groups.
There are no inbound rules. Normally we’d require tcp 22 to ssh into this instance.
If we go back to Systems Manager, we can go to instance actions, start a session, and..what’s gonna happen? We are connected to our instance!
We strongly recommend using AWS Systems Manager Session Manager to manage instances. Also, it allows MFA, and it provides command history auditing.
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