Hello: I am authenticating against LDAP as such: Hashtable authEnv = new Hashtable(); String dn = "CN=" + userAuth.getFirstName() + " " + userAuth.getLastName() + ",OU=zzzzzzzz,DC=yyyyy,DC=xxx"; authEnv.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory"); authEnv.put(Context.PROVIDER_URL, "ldap://192.168.132.20:389"); authEnv.put(Context.SECURITY_AUTHENTICATION, "simple"); authEnv.put(Context.SECURITY_PRINCIPAL, dn); authEnv.put(Context.SECURITY_CREDENTIALS, password); I am using the user's first and last name to authenticate. Now, I want to use their login id to authenticate. I was told "to ...