Is It Possible to Redirect to a Different Port Using URL Rewrite?

Hi, Everybody!

I would like to be able to redirect (or intercept) a specific URL (e.g., http://<server>/<servicePath>/<serviceName>.asmx) to a different port (http://<server>:<portNumber>/<servicePath>/<serviceName>.asmx) where <server>, <portNumber>, <servicePath> and <serviceName> are placeholders.  Is that possible with URL Rewrite?  I am having a most difficult time with it.