tomcat crossdomain.xml not found 404

Question

I'm running a web server that requires crossdomain.xml at the root of the tomcat server

The current Tomcat folder configuration:

webapps/
    ROOT/crossdomain.xml
    web/server_files port 8080

Under web folder there is a file clientapp.jsp that start flash application

1. ipAddress:8080/crossdomain.xml results in 404 - Web server bound to port 8080 and ROOT is not running - at least not on port 8080
2. Call to ipadress:8080/web/clientapp results in ipadress:8080/crossdomain.xml not found 404

My Question

If the Root Context of my web server is web (http:localhost:8080/web), How can i redirect/ catch /run url such as:

http:localhost:8080/crossdomain.xml