title: Comparing two sets of three columns in Excel and highlight specific differences (screenshot of desired result included!)
body: <p>I've read around quite a bit and can't find this specific question addressed anywhere. Basically, I have a spreadsheet with two groups of three columns which I want to compare for differences, and conditionally format where necessary.</p>
  
  <p>For instance:</p>
  
  <pre><code>Expected                           Found
  Port | Protocol | Process          Port | Protocol | Process
  23     tcp        telnet           23     tcp        telnet
  25     tcp        smtpd            25     tcp        foo
  80     tcp        httpd            80     udp        bar
  161    udp        snmpd
  </code></pre>
  
  <p>I found a tool called Kaleidoscope that does a great job of this, and actually produces the result I'm looking for:</p>
  
  <p><img src="https://i.stack.imgur.com/nJIE0.png" alt="screenshot"></p>
  
  <p>Is there any way to use Excel conditional formatting to replicate this result?</p>
  
  <p>Thanks so much!</p>