Can external sites be tracked via internally hosted PIWIK

Dear All,

I have a very generic question on the usage of PIWIK. I work for a insurance company and our users access a web application which is hosted externally and the application owner wants to track the usage of the application via PIWIK.

My questions are below.-

  1. Can an external application be tracked using the internally hosted PIWIK?
  2. If it can be, then what changes needs to be made in our internal network with regards to Firewalls/Proxy etc?
  3. Are there are any known issues in such a setup?

Hoping one of you could answer this.

Many thanks in advance.

regards
Raghu