security and iis

Hi I define a security constraint for one servlet in my tomcat . it is running fine if I am trying to go through localhost:8080/myServlet (asking for user name and password which are defined in the tomcat-users.xml file) but when I go through the iis (http://localhost/myServlet) it requires a

FW: security and iis

(sorry if this message posted twice) Hi I define a security constraint for one servlet in my tomcat . it is running fine if I am trying to go through localhost:8080/myServlet (asking for user name and password which are defined in the tomcat-users.xml file) but when I go through the iis