When my Portal Server (Security configured) access the AppServer(Security Not Configured) through the Portal Service ,I do get the same exception.

I do get the same exception.

com.ibm.ws.wmm.ldap.LdapBeanImpl authenticate(String DN, String pwd) The following Naming Exception occured during processing: "javax.naming.CommunicationException:

Inorder to solve this should i disable the Security in Portal Server or to enable Security in AppServer