Describes the cause and action for error messages.
Error Message(English)：
pem permissions too open
Trying to SSH into an Amazon Ec2 instance - permission error ...
https://stackoverflow.com/questions/8193768/trying-to-ssh-into-an-amazon-ec2-instance-permission-err・・・
SSH Key: “Permissions 0644 for 'id_rsa.pub' are too open.” on ...
https://stackoverflow.com/questions/29933918/ssh-key-permissions-0644-for-id-rsa-pub-are-too-open-on・・・
Connecting to Amazon EC2 Instance on Windows 10 bash ...
https://stackoverflow.com/questions/39038729/connecting-to-amazon-ec2-instance-on-windows-10-bash-pe・・・
ssh "permissions are too open" error
https://stackoverflow.com/questions/9270734/ssh-permissions-are-too-open-error
Windows CHMOD 600
https://stackoverflow.com/questions/5264595/windows-chmod-600
SSH Key: “Permissions 0644 for 'id_rsa.pub' are too open.” on mac ...
https://stackoverflow.com/questions/29933918/ssh-key-permissions-0644-for-id-rsa-pub-are-too-open-on・・・
SSHで接続しようとしたら秘密鍵のパーミッションでエラーが出た - yachibit.log
http://yachibit.hatenablog.jp/entry/2013/04/25/001912
Bash on WindowsでのSSH公開鍵認証とWindowsのファイルシステムと ...
https://yoshinorin.net/2017/03/03/windows-filesystem-permission-and-bash-on-windows/
Windows SSH: Permissions for 'private-key' are too open - Super User
https://superuser.com/questions/1296024/windows-ssh-permissions-for-private-key-are-too-open