title: Message exchange between applications on different networks
body: <ul>
  <li>we have 2 networks that cannot be connected (they belong to different organizations), but are physically located in the same building. </li>
  <li>we have a s/w utility that runs on one network and needs to receive messages and process them from another utility, running on another one. </li>
  </ul>
  
  <p>What would be the easiest solution for this (without needing to connect networks)?</p>