noo, thanks but i say Filter name class in the life cycle of application
Filter creation is neither JSF nor RF specific. It's better to check standard Servlets documentation. Or you need filter to extend RF in some specific way?
I used filter in my project. I don't think there is anything special.
1. create your filter class
2. configure filter in the web.xml
Here is my configuration in web.xml
Let's discuss if you have any questions.