How to configure IIS ARR for Skype for Business
Configure ARR Open your IIS Manager, right click “Server Farms” and “Create Server Farm”. Specify a Server Farm name, i used Skypeweb Click “Next”. Server address must be your Front-end pool, click show advanced setting and set the following ports httpPort 8080 httpsPort 4443 And click “Add” and “Finish” These ports are configured on your Front-end server for external traffic. Click Yes at the next screen. (this will save you some time later.