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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-16 19:46:48 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-16 19:46:48 +0000
commit311bcfc6b3acdd6fd152798c7f287ddf74fa2a98 (patch)
tree0ec307299b1dada3701e42f4ca6eda57d708261e /doc/src/sgml/html/auth-trust.html
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downloadpostgresql-15-311bcfc6b3acdd6fd152798c7f287ddf74fa2a98.tar.xz
postgresql-15-311bcfc6b3acdd6fd152798c7f287ddf74fa2a98.zip
Adding upstream version 15.4.upstream/15.4upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!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>21.4. Trust 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-methods.html" title="21.3. Authentication Methods" /><link rel="next" href="auth-password.html" title="21.5. Password Authentication" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">21.4. Trust Authentication</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="auth-methods.html" title="21.3. Authentication Methods">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="auth-password.html" title="21.5. Password Authentication">Next</a></td></tr></table><hr /></div><div class="sect1" id="AUTH-TRUST"><div class="titlepage"><div><div><h2 class="title" style="clear: both">21.4. Trust Authentication</h2></div></div></div><p>
+ When <code class="literal">trust</code> authentication is specified,
+ <span class="productname">PostgreSQL</span> assumes that anyone who can
+ connect to the server is authorized to access the database with
+ whatever database user name they specify (even superuser names).
+ Of course, restrictions made in the <code class="literal">database</code> and
+ <code class="literal">user</code> columns still apply.
+ This method should only be used when there is adequate
+ operating-system-level protection on connections to the server.
+ </p><p>
+ <code class="literal">trust</code> authentication is appropriate and very
+ convenient for local connections on a single-user workstation. It
+ is usually <span class="emphasis"><em>not</em></span> appropriate by itself on a multiuser
+ machine. However, you might be able to use <code class="literal">trust</code> even
+ on a multiuser machine, if you restrict access to the server's
+ Unix-domain socket file using file-system permissions. To do this, set the
+ <code class="varname">unix_socket_permissions</code> (and possibly
+ <code class="varname">unix_socket_group</code>) configuration parameters as
+ described in <a class="xref" href="runtime-config-connection.html" title="20.3. Connections and Authentication">Section 20.3</a>. Or you
+ could set the <code class="varname">unix_socket_directories</code>
+ configuration parameter to place the socket file in a suitably
+ restricted directory.
+ </p><p>
+ Setting file-system permissions only helps for Unix-socket connections.
+ Local TCP/IP connections are not restricted by file-system permissions.
+ Therefore, if you want to use file-system permissions for local security,
+ remove the <code class="literal">host ... 127.0.0.1 ...</code> line from
+ <code class="filename">pg_hba.conf</code>, or change it to a
+ non-<code class="literal">trust</code> authentication method.
+ </p><p>
+ <code class="literal">trust</code> authentication is only suitable for TCP/IP connections
+ if you trust every user on every machine that is allowed to connect
+ to the server by the <code class="filename">pg_hba.conf</code> lines that specify
+ <code class="literal">trust</code>. It is seldom reasonable to use <code class="literal">trust</code>
+ for any TCP/IP connections other than those from <span class="systemitem">localhost</span> (127.0.0.1).
+ </p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="auth-methods.html" title="21.3. Authentication Methods">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="auth-password.html" title="21.5. Password Authentication">Next</a></td></tr><tr><td width="40%" align="left" valign="top">21.3. Authentication Methods </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"> 21.5. Password Authentication</td></tr></table></div></body></html> \ No newline at end of file