hardened-shadow is an alternative implementation
of user-management utilities: login, su, passwd, useradd,
and so on.

It has been designed to be simple and secure.

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homepage
  http://code.google.com/p/hardened-shadow/

bug tracker
  http://code.google.com/p/hardened-shadow/issues/list

git web interface
  http://code.google.com/p/hardened-shadow/source/browse/

mailing lists
  http://groups.google.com/group/hardened-shadow-dev
  http://groups.google.com/group/hardened-shadow-users

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Build prerequisites:

autoconf, automake, libtool, libxslt, make, Linux-PAM,
DocBook DTD 4.5 and XSL Stylesheet

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How to compile from git:

git clone https://code.google.com/p/hardened-shadow/
cd hardened-shadow/
libtoolize
autoreconf -i
./configure --enable-generate-man
make

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How to compile from tarball:

./configure
make

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How to install:

1. Make sure wheel and hardened-shadow groups exist.
2. Run pwck and fix as many errors as possible.
3. Run "make install" as root
4. Run "pwconv" as root
5. Replace "shadow: compat" line in /etc/nsswitch.conf with "shadow: hardened_shadow"
6. Replace "pam_unix.so" with "pam_hardened_shadow.so" in /etc/pam.d
7. Make sure "pam_hardened_shadow.so" for passwd has parameter "prefix=$6$"
8. Add /bin/shell_proxy to /etc/shells