How did u do that? Can you post all the steps?
I have gone through that doc but we are not using iRecruitment. Also I haven't changed the password from external node.
Here is the actual setup. Developer wrote small class file to get data from database and I placed that under $JAVA_TOP/xxas folder. Added following entries in $FND_TOP/admin/template/custom/oacore_web_xml_FMW.tmp
<!-- Xxas Servlets -->
<!-- Xxas Mapping -->
Ran autoconfig and restarted the services to test.