<!--
-$PostgreSQL: pgsql/doc/src/sgml/client-auth.sgml,v 1.70.4.4 2005/04/22 04:19:02 momjian Exp $
+$PostgreSQL: pgsql/doc/src/sgml/client-auth.sgml,v 1.70.4.5 2005/04/26 03:01:22 momjian Exp $
-->
<chapter id="client-authentication">
default PAM service name is <literal>postgresql</literal>. You can
optionally supply your own service name after the <literal>pam</>
key word in the file <filename>pg_hba.conf</filename>.
- For more information about PAM, please read the <ulink
- url="http://www.kernel.org/pub/linux/libs/pam/"><productname>Linux-PAM</>
- Page</ulink> and the <ulink
- url="http://www.sun.com/software/solaris/pam/"><systemitem
- class="osname">Solaris</> PAM Page</ulink>.
+ PAM is used only to validate username/password pairs.
+ The user must already exist in the database before PAM
+ can be used for authentication. For more information about
+ PAM, please read the <ulink url="http://www.kernel.org/pub/linux/libs/pam/">
+ <productname>Linux-PAM</> Page</ulink>
+ and the <ulink url="http://www.sun.com/software/solaris/pam/">
+ <systemitem class="osname">Solaris</> PAM Page</ulink>.
</para>
</sect2>
</sect1>