error in connecting to aws service

Question

I am trying to connect to AWS instance and getting the following error.

ubuntu@ubuntu:/media/18AB-992F$ ssh -i shantanuo.pem abc.compute-1.amazonaws.com
The authenticity of host 'abc.compute-1.amazonaws.com (107.22.129.243)' can't be established.
RSA key fingerprint is 0d:f0:ab:53:bb:fc.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'abc.compute-1.amazonaws.com,107.22.129.243' (RSA) to the list of known hosts.
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@         WARNING: UNPROTECTED PRIVATE KEY FILE!          @
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Permissions 0644 for 'shantanuo.pem' are too open.
It is recommended that your private key files are NOT accessible by others.
This private key will be ignored.
bad permissions: ignore key: shantanuo.pem
Permission denied (publickey,gssapi-keyex,gssapi-with-mic).

I am not able to change the permission of the file because I am using Ubuntu Live CD. Is the file permission of "shantanuo.pem" the only issue?

Answer 1

您可以尝试将pem文件权限更改为400 。