How do I make a *.ppk file let me into SSH (Ubuntu)

Posted by user20285 on Super User See other posts from Super User or by user20285
Published on 2010-07-14T18:44:32Z Indexed on 2012/12/10 17:08 UTC
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ubuntu

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ssh

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permissions

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putty

I have a *.ppk file given to me so I can SSH into a server.

I'm using Ubuntu 10.x.

What commands do I need to run so I have permission to SSH?

I found something that said to do

ssh-add some_file.ppk

But then, I got this:

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@         WARNING: UNPROTECTED PRIVATE KEY FILE!          @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Permissions 0777 for 'foofoofoo.ppk' are too open.
It is recommended that your private key files are NOT accessible by others.
This private key will be ignored.

How can I change permissions on that file so Ubuntu will ssh-ify my .ppk file?

Thanks

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