Fix SSH connection issues when using enhanced networking in AWS

Title

You might be able to connect to an AWS instance using SSH but not to an instance managed through the Flexera console. This can happen even when both instances use the same VPC, subnet, security group, and AMI. One possible cause is how your Linux distribution names network interfaces when enhanced networking is enabled.

Solution

Check whether your Linux distribution uses predictable network interface names. Interface names may appear as ens5, ens6, or similar instead of the default eth0.
If you’re using enhanced networking, confirm that the interface name in your AMI matches what AWS assigns on launch.
Review the guidance in Enable enhanced networking on your instance (AWS documentation) to verify required configuration.

Outcome

After confirming that the instance uses the expected network interface name, you should be able to connect using SSH.

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Ocean

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URL Name

Fix-SSH-connection-issues-when-using-enhanced-networking-in-AWS

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Case id: 00001065