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+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>21.14. BSD Authentication</title><link rel="stylesheet" type="text/css" href="stylesheet.css" /><link rev="made" href="pgsql-docs@lists.postgresql.org" /><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot" /><link rel="prev" href="auth-pam.html" title="21.13. PAM Authentication" /><link rel="next" href="client-authentication-problems.html" title="21.15. Authentication Problems" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">21.14. BSD Authentication</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="auth-pam.html" title="21.13. PAM Authentication">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="client-authentication.html" title="Chapter 21. Client Authentication">Up</a></td><th width="60%" align="center">Chapter 21. Client Authentication</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 15.4 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="client-authentication-problems.html" title="21.15. Authentication Problems">Next</a></td></tr></table><hr /></div><div class="sect1" id="AUTH-BSD"><div class="titlepage"><div><div><h2 class="title" style="clear: both">21.14. BSD Authentication</h2></div></div></div><a id="id-1.6.8.21.2" class="indexterm"></a><p>
+    This authentication method operates similarly to
+    <code class="literal">password</code> except that it uses BSD Authentication
+    to verify the password. BSD Authentication is used only
+    to validate user name/password pairs. Therefore the user's role must
+    already exist in the database before BSD Authentication can be used
+    for authentication. The BSD Authentication framework is currently
+    only available on OpenBSD.
+   </p><p>
+    BSD Authentication in <span class="productname">PostgreSQL</span> uses
+    the <code class="literal">auth-postgresql</code> login type and authenticates with
+    the <code class="literal">postgresql</code> login class if that's defined
+    in <code class="filename">login.conf</code>. By default that login class does not
+    exist, and <span class="productname">PostgreSQL</span> will use the default login class.
+   </p><div class="note"><h3 class="title">Note</h3><p>
+     To use BSD Authentication, the PostgreSQL user account (that is, the
+     operating system user running the server) must first be added to
+     the <code class="literal">auth</code> group.  The <code class="literal">auth</code> group
+     exists by default on OpenBSD systems.
+    </p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="auth-pam.html" title="21.13. PAM Authentication">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="client-authentication.html" title="Chapter 21. Client Authentication">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="client-authentication-problems.html" title="21.15. Authentication Problems">Next</a></td></tr><tr><td width="40%" align="left" valign="top">21.13. PAM Authentication </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 15.4 Documentation">Home</a></td><td width="40%" align="right" valign="top"> 21.15. Authentication Problems</td></tr></table></div></body></html>
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