This presentation is about SelectServer Client Access Restrictions. It gives some background theory about networking aspects that affect Client Access Restrictions and outlines the differences in how Client Access Restrictions work in case of deployed SelectServer and SelectServer OnLine. It shows what you can achieve with Client Access Restrictions and what you cannot in regards to a deployed SelectServer and SelectServer Online.
The video can be viewed here:
http://www.youtube.com/watch?v=QyFwsOuduI4