Windows CHMOD 600

Question

I\'m trying to connect to Amazon EC2 using OpenSSH in windows but I need to set the permissions of my key file.

What is the windows equivalent of CHMOD 600

Answer 1

I prefer Cygwin over putty and you can just run chmod command in cygwin to change the permission of PEM key to be 400, then you are good to go.

myuser@myuser-HP ~
$ ssh -i /cygdrive/c/Users/myuser/Downloads/mykey.pem ec2-user@xx.xx.xx.xx
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@         WARNING: UNPROTECTED PRIVATE KEY FILE!          @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Permissions 0550 for '/cygdrive/c/Users/myuser/Downloads/mykey.pem' are too open.
It is required that your private key files are NOT accessible by others.
This private key will be ignored.
Load key "/cygdrive/c/Users/myuser/Downloads/mykey.pem": bad permissions
Permission denied (publickey).

myuser@myuser-HP ~
$ chmod
chmod: missing operand
Try 'chmod --help' for more information.

myuser@myuser-HP ~
$ chmod 400 /cygdrive/c/Users/myuser/Downloads/mykey.pem

myuser@myuser-HP ~
$ ssh -i /cygdrive/c/Users/myuser/Downloads/meykey.pem ec2-user@xx.xx.xx.xx

       __|  __|_  )
       _|  (     /   Amazon Linux AMI
      ___|\___|___|

https://aws.amazon.com/amazon-linux-ami/2015.09-release-notes/
[ec2-user@ip-xxx ~]$ ohyeah I am in!