403 forbidden-ip resin-admin error

check the resin.conf file for /resin-admin and change

<web-app id="/resin-admin" root-directory="${resin.home}/php/admin">
        <!--
           - Administration application /resin-admin
          -->
        <prologue>
          <resin:set var="resin_admin_external" value="false"/>
          <resin:set var="resin_admin_insecure" value="true"/>
        </prologue>
      </web-app>

to

<web-app id="/resin-admin" root-directory="${resin.home}/php/admin">
        <!--
           - Administration application /resin-admin
          -->
        <prologue>
          <resin:set var="resin_admin_external" value="true"/>  <!-- Change this line Means change the false value to true -->
          <resin:set var="resin_admin_insecure" value="true"/>
        </prologue>
      </web-app>

Refresh your page is browser and you will be able to access the resin-admin page example:- http://localhost.com/resin-admin

参考: http://xok.la/2010/01/resin_admin_403_make_passowrd.html