Method 2: Use AWS Systems Manager Session Manager.Method 1: Use the EC2 Serial Console for Linux.If the instance passes both health checks, use one of the following four listed methods with your configuration Note: Both verification steps require OS-level access of the instance. The SSH daemon (sshd) is running and listening on port 22. ![]() There's no firewall on the instance rejecting the SSH connection."Connection refused" errorįor the "Connection refused" error, verify the following: Note: The last two verification steps require OS-level access of the instance. SSH isn't blocked by the instance's TCP Wrappers (on the Red Hat website).There isn't a firewall blocking the connection between SSH client and the EC2 instance.The route table of the instance’s subnet is configured properly to provide connectivity between EC2 instance and the SSH client.The network ACLs of instance subnet allows incoming traffic on TCP port 22 and allow ephemeral port for the outgoing traffic.The security group of the instance allows incoming traffic on TCP port 22.The instance is passing its health checks.The instance's IP address or hostname is correct.A firewall blocked and was set to reject the package instead of dropping it.įor the "Connection timed out" error, verify the following:.The host reached the instance but there was no service listening on the SSH port. ![]() The following are common causes for this error:
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