
To build, apply the patch to your openssh-3.6.1p2 tree, and copy the
.c and .h files into the source directory.

In the source directory, run ./configure, make, and make install.

WARNING: the standard password authentication method is turned off
in this patch, to force the use of the captcha-password method.

Reference: A Text-Graphics Character CAPTCHA for Password Authentication.
Manuscript by M. Dailey and C. Namprempre.

http://www.siit.tu.ac.th/mdailey/captcha/

