====== HTTP PAM Authentication (apache2)======
  * install **apache**
  * install **pwauth** (apt-get install pwauth/|/usr/ports/security/pwauth/)
  * install **mod_authnz_external** (apt-get install libapache2-mod-authnz-external|/usr/ports/www/mod_authnz_external)

===== /etc/pam.d/pwauth =====
<file config /etc/pam.d/pwauth>auth    required    pam_unix.so
account required    pam_unix.so</file>
===== httpd.conf =====
<code>LoadModule authnz_external_module libexec/apache22/mod_authnz_external.so</code>
<code>AddExternalAuth pwauth /usr/local/bin/pwauth
SetExternalAuthMethod pwauth pipe</code>

===== .htaccess =====
<file apache .htacess>AuthName "some text"
AuthType Basic
Require valid-user
AuthBasicProvider external
AuthExternal pwauth
</file>