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Re: OpenSSH-3.9p1-1, mysterious -r option, and documented steps to resolve "Connection to host closed." message was sshd privilege separation problem


On Sat, 28 Aug 2004, Brian Dessent wrote:

> Greg Morgan wrote:
>
> > OPTION 1.)
> > ...
> > I looked at Cygwin /usr/bin/ssh-host-config configuration script and
> > found the command line that I would use:
> > ...
> > OPTION 2.)
> > ...
> > The use vim's search and replace functions to
> > change all the sshd -a -D occurrences to sshd -a "-D -r" like so
>
> Option 3:
>
> echo "-D -r" >/proc/registry/HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/sshd/Parameters/AppArgs

Umm, first off:

$ cat /proc/registry/HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/sshd/Parameters/AppArgs
-De $

(which indicates the absense of the newline in that value), so you have to
at least use "echo -n".

Secondly:

$ echo -n "-Der" > /proc/registry/HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/sshd/Parameters/AppArgs
bash: /proc/registry/HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/sshd/Parameters/AppArgs: Read only file system
$

AFAIR, /proc/registry has always been read-only.

What you *can* do, however, is:

$ regtool -- set /HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Services/sshd/Parameters/AppArgs "-Der"
$

HTH,
	Igor
-- 
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whatever you think is worth doing."  -- Dr. Jubal Harshaw

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