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Mail Archives: cygwin/2003/05/23/14:27:27

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From: "Max Bowsher" <maxb AT ukf DOT net>
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Subject: Re: Question about "rexec"
Date: Fri, 23 May 2003 19:15:27 +0100
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Andrew DeFaria wrote:
> Larry Hall (RFK Partners, Inc.) wrote:
> 
>> Andrew DeFaria wrote:
>> 
>>> Bill C. Riemers wrote:
>>> 
>>>> You might also want to check the ownership of your home directory
>>>> and .ssh directory, as that is the only thing I can think of that
>>>> would cause the touch error in your previous message.  If ownership
>>>> or permissions are wrong, then sshd defaults to require a password
>>>> rather than trusting that nobody else has changed the key files.
>>> 
>>> Herein I believe my difficulties lie. That an not understanding
>>> Windows permissions vs Unix permissions and how such things are
>>> mapped. Here's what I do know:
>>> 
>>> $ cd ~/.ssh
>>> $ ls -l
>>> total 6
>>> -rw-r--r--    1 adefaria Domain U      227 May 22 17:10 authorized_keys
>>> -rw-r--r--    1 adefaria Domain U      227 May 22 15:25 authorizedkeys
>>> -rw-r--r--    1 adefaria Domain U      887 May 22 15:22 id_rsa
>>> -rw-r--r--    1 adefaria Domain U      227 May 22 15:22 id_rsa.pub
>>> -rw-r--r--    1 adefaria Domain U     1624 May 22 15:19 known_hosts
>>> $ chmod 600 id_rsa*
>>> $ ls -l
>>> total 6
>>> -rw-r--r--    1 adefaria Domain U      227 May 22 17:10 authorized_keys
>>> -rw-r--r--    1 adefaria Domain U      227 May 22 15:25 authorizedkeys
>>> -rw-r--r--    1 adefaria Domain U      887 May 22 15:22 id_rsa
>>> -rw-r--r--    1 adefaria Domain U      227 May 22 15:22 id_rsa.pub
>>> -rw-r--r--    1 adefaria Domain U     1624 May 22 15:19 known_hosts
>>> 
>>> Nothing. So I go into Windows Explorer and look at the Security
>>> setting on the Properties dialog. I attempt to remove the users in
>>> the Security section and it tells me that I have to stop inheriting
>>> permissions. So I go to stop inheriting permissions and tell it to
>>> remove everything. Now nobody's listed in the Securities section.
>>> Windows warns me that only the create of the file will be able to
>>> access it. I look in Cygwin with ls -l and the mode bits are the
>>> same. I try the chmod again and there is no change! So I add my user
>>> back to having full control. My user is the only user listed now but
>>> the mode bits are still 644.
>>> 
>>> When I try to ssh $(hostname) cmd I get:
>>> 
>>> @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
>>> @         WARNING: UNPROTECTED PRIVATE KEY FILE!          @
>>> @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
>>> Permissions 0644 for '/us/adefaria/.ssh/id_rsa' 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: /us/adefaria/.ssh/id_rsa
>>> 
>>> Now what?!?
>>> 
>>> (It would be nice if somebody who really knew the algorithm could
>>> explain Windows permissions and how they are mapped to Unix mode bits).
>> 
>> Or you could just look at the FAQ:
>> 
>> Why doesn't chmod work?
>> <http://cygwin.com/faq/faq_toc.html#TOC45>
> 
> All that this says is to insure that you have ntsec set. I have it set.
> chmod still doesn't work! BTW I'm on Windows XP and use NTFS. My home
> directory is on the server (/us is a mount of //<server>/<share>).

Aha! Then have a look at smbntsec.

Max.


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