[Bug 1656557] Re: sshd boolean option parsing is excessively case-sensitive

[nmarques]

Hi Collin, thanks for the input. I've spoken to upstream also about
this, and they informed me that some options are parsed with a more
advanced parser than others (the last being yes/no).

Their advice was to follow the comments spec.

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https://bugs.launchpad.net/bugs/1656557

Title:
  sshd boolean option parsing is excessively case-sensitive

Status in portable OpenSSH:
  Unknown
Status in openssh package in Ubuntu:
  Triaged

Bug description:
  
  Dear People,

  The field 'PasswordAuthentication' unlike all the others requires no
  capitalization in order for the ssh daemon to start properly!

  While this works:

  PasswordAuthentication yes

  
  The following doesn't work for this field (though works for other fields):

  PasswordAuthentication Yes

  This is most likely an issue to bring up to upstream project. Could we
  have a fix so that configuration can be done in a consistent way and
  the daemon doesn't break because of capitalization of a given
  parameter (it works on the other fields using [Yy] or [Nn]).

  This is a reality in 14.04 and 16.04.

  Thanks for your time.

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