+
+<refsect2><title>Usernames</title>
+
+<para>When Amanda is built, a username is specified with the
+<option>--with-user</option> option. Most Amanda processes run under
+this user's identity, to minimize security risks. In binary
+distributions, this username is usually one of 'amanda',
+'amandabackup', or 'backup'. The examples below use 'amandabackup'
+since it is unambiguous. You may need to adjust accordingly for your
+system.</para>
+
+</refsect2>
+
+<refsect2><title>Authenticated Peer Hostnames</title>
+
+<para>Amanda's authentication mechanisms provide an authenticated hostname of
+the system on the other end of the connection, which is used to restrict
+access to only particular hosts. The degree of "authentication" performed
+on this hostname varies with the authentication mechanism, and is discussed
+below.</para>
+
+</refsect2>
+