title: Two external IPs one WebServer/Website
body: <p>I'm having the following dilemma, I have a website on IIS with two internal IPs, each one of those IPs are NATed to different external IPs (each IP is from a different ISP). I also configured a RoundRobin DNS Service (two A hosts with the same name but with a different IP). Basically what this does is that the traffic is balanced between the two ISPs, and that's what we want. The thing is that apparently this configuration (DNS Roundrobin) is meant for when you have a cluster of server so each server has its own ISP on its own NIC, so the traffic from the webserver to the client is made over that ISP. </p>
  
  <p>Right now we are being told that no matter where our inbound traffic comes from, the outbound traffic is always through our main WAN, which is also OK, because we have tested that when the primary WAN link is down, the website keeps working on the secondary link. </p>
  
  <p>OK, the question is, do you think there may be problem with this configuration? Is the DNS Rounrobin also useful on this configuration?. </p>
  
  <p>Thanks a lot for your feedback.</p>