SAS University Edition is not meant to accessed via ssh. In the downloadable version of SAS UE, there is not even an sshd server in the image. In the AWS version of SAS UE, the only reason that there is an ssh interface at all is so that the AWS admins can use it to do a security scan of the image.
SAS University Edition is designed to be accessed via web browser. From your AWS console, get the Public DNS for the URL and use the instanceID as the password. If you want to upload/download files to SAS UE, you can use the file upload/download facility built into SAS Studio.
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