提交 83521131 编写于 作者: B Bruce Momjian

This patch improves the "Client Authentication" section of the user's

guide in a few minor ways.

Neil Conway
上级 b4794bfb
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$Header: /cvsroot/pgsql/doc/src/sgml/client-auth.sgml,v 1.35 2002/04/09 00:38:24 momjian Exp $ $Header: /cvsroot/pgsql/doc/src/sgml/client-auth.sgml,v 1.36 2002/08/16 04:48:16 momjian Exp $
--> -->
<chapter id="client-authentication"> <chapter id="client-authentication">
...@@ -29,8 +29,9 @@ $Header: /cvsroot/pgsql/doc/src/sgml/client-auth.sgml,v 1.35 2002/04/09 00:38:24 ...@@ -29,8 +29,9 @@ $Header: /cvsroot/pgsql/doc/src/sgml/client-auth.sgml,v 1.35 2002/04/09 00:38:24
<para> <para>
<productname>PostgreSQL</productname> offers a number of different <productname>PostgreSQL</productname> offers a number of different
client authentication methods. The method to be used can be selected client authentication methods. The method used to authenticate a
on the basis of (client) host, database, and user. particular client connection can be selected on the basis of
(client) host address, database, and user.
</para> </para>
<para> <para>
...@@ -56,8 +57,8 @@ $Header: /cvsroot/pgsql/doc/src/sgml/client-auth.sgml,v 1.35 2002/04/09 00:38:24 ...@@ -56,8 +57,8 @@ $Header: /cvsroot/pgsql/doc/src/sgml/client-auth.sgml,v 1.35 2002/04/09 00:38:24
<filename>pg_hba.conf</filename> in the data directory, e.g., <filename>pg_hba.conf</filename> in the data directory, e.g.,
<filename>/usr/local/pgsql/data/pg_hba.conf</filename>. <filename>/usr/local/pgsql/data/pg_hba.conf</filename>.
(<acronym>HBA</> stands for host-based authentication.) A default (<acronym>HBA</> stands for host-based authentication.) A default
<filename>pg_hba.conf</filename> file is installed when the data area <filename>pg_hba.conf</filename> file is installed when the data
is initialized by <command>initdb</command>. directory is initialized by <command>initdb</command>.
</para> </para>
<para> <para>
...@@ -124,7 +125,7 @@ hostssl <replaceable>database</replaceable> <replaceable>user</replaceable> <rep ...@@ -124,7 +125,7 @@ hostssl <replaceable>database</replaceable> <replaceable>user</replaceable> <rep
enabled with the <option>-l</> option or equivalent configuration enabled with the <option>-l</> option or equivalent configuration
setting when the server is started. (Note: <literal>host</literal> setting when the server is started. (Note: <literal>host</literal>
records will match either SSL or non-SSL connection attempts, but records will match either SSL or non-SSL connection attempts, but
<literal>hostssl</literal> records requires SSL connections.) <literal>hostssl</literal> records require SSL connections.)
</para> </para>
</listitem> </listitem>
</varlistentry> </varlistentry>
...@@ -199,9 +200,11 @@ hostssl <replaceable>database</replaceable> <replaceable>user</replaceable> <rep ...@@ -199,9 +200,11 @@ hostssl <replaceable>database</replaceable> <replaceable>user</replaceable> <rep
<term><literal>trust</></term> <term><literal>trust</></term>
<listitem> <listitem>
<para> <para>
The connection is allowed unconditionally. This method allows The connection is allowed unconditionally. This method
any user that has login access to the client host to connect as allows anyone that can connect to the
any <productname>PostgreSQL</productname> user whatsoever. <productname>PostgreSQL</productname> database to login as
any <productname>PostgreSQL</productname> user they like,
without the need for a password.
</para> </para>
</listitem> </listitem>
</varlistentry> </varlistentry>
...@@ -222,7 +225,7 @@ hostssl <replaceable>database</replaceable> <replaceable>user</replaceable> <rep ...@@ -222,7 +225,7 @@ hostssl <replaceable>database</replaceable> <replaceable>user</replaceable> <rep
<para> <para>
Requires the client to supply an MD5 encrypted password for Requires the client to supply an MD5 encrypted password for
authentication. This is the only method that allows encrypted authentication. This is the only method that allows encrypted
passwords to be stored in pg_shadow. passwords to be stored in <structname>pg_shadow</structname>.
</para> </para>
</listitem> </listitem>
</varlistentry> </varlistentry>
...@@ -273,15 +276,17 @@ hostssl <replaceable>database</replaceable> <replaceable>user</replaceable> <rep ...@@ -273,15 +276,17 @@ hostssl <replaceable>database</replaceable> <replaceable>user</replaceable> <rep
<listitem> <listitem>
<para> <para>
For TCP/IP connections, authentication is done by contacting For TCP/IP connections, authentication is done by contacting
the <firstterm>ident</firstterm> server on the client host. the <firstterm>ident</firstterm> server on the client
This is only as secure as the client machine. You must specify host. This is only as secure as the client machine. You must
the map name after the 'ident' keyword. It determines how to specify the map name after the 'ident' keyword. It
map remote user names to PostgreSQL user names. If you use determines how to map remote user names to
<productname>PostgreSQL</productname> user names. If you use
"sameuser", the user names are assumed to be identical. If "sameuser", the user names are assumed to be identical. If
not, the map name is looked up in the $PGDATA/pg_ident.conf not, the map name is looked up in the $PGDATA/pg_ident.conf
file. The connection is accepted if that file contains an file. The connection is accepted if that file contains an
entry for this map name with the ident-supplied user name and entry for this map name with the ident-supplied user name
the requested PostgreSQL user name. and the requested <productname>PostgreSQL</productname> user
name.
</para> </para>
<para> <para>
On machines that support unix-domain socket credentials On machines that support unix-domain socket credentials
...@@ -317,8 +322,8 @@ hostssl <replaceable>database</replaceable> <replaceable>user</replaceable> <rep ...@@ -317,8 +322,8 @@ hostssl <replaceable>database</replaceable> <replaceable>user</replaceable> <rep
<literal>postgresql</literal>. You can optionally supply you <literal>postgresql</literal>. You can optionally supply you
own service name after the <literal>pam</> keyword in the own service name after the <literal>pam</> keyword in the
file. For more information about PAM, please read the <ulink file. For more information about PAM, please read the <ulink
url="http://www.kernel.org/pub/linux/libs/pam/"><productname>L url="http://www.kernel.org/pub/linux/libs/pam/"><productname>Linux-PAM</>
inux-PAM</productname> Page</ulink> and the <ulink Page</ulink> and the <ulink
url="http://www.sun.com/software/solaris/pam/"><systemitem url="http://www.sun.com/software/solaris/pam/"><systemitem
class="osname">Solaris</> PAM Page</ulink>. class="osname">Solaris</> PAM Page</ulink>.
</para> </para>
......
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