权限被拒绝（公钥），在 Linux AWS 服务器上我可以修复它吗？

Question

I got a free tier on aws Linux server which is supposed to work but I get the following error:

@         WARNING: UNPROTECTED PRIVATE KEY FILE!          @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Permissions 0555 for 'vpnserver.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 "vpnserver.pem": bad permissions
root@*amazonaws.com: Permission denied (publickey).

I have tried every possible guide on the internet and still it is like this, do you have a solution for it?

• I use Windows in cmd / powershell and I also have the Linux terminal

Answer 1

The error is explained in Error: Unprotected private key file . You should set your key permissions to 400 , not 555 :

chmod 0400 vpnserver.pem

More info about this is also at:

• I'm receiving "Permission denied (publickey)" or "Authentication failed, permission denied" errors when trying to access my EC2 instance. How do I resolve this?