Health Checking Internet links behind proxy servers

There may be a simpler way, but I think you'll get the best bang for your buck by using a pre-configured monitor for your first requirement and then writing an external monitor that would perform steps 2 & 3 are return a pass/fail response. Here's the external monitor wiki page:

 

 

http://devcentral.f5.com/wiki/default.aspx/AdvDesignConfig/ExternalMonitor.html Click here