title: Ionic 3.9.2 net::ERR_CONNECTION_TIMED_OUT and unable to ping dev server from within network
body: <p>I'm having difficulties getting ionic --livereload to work.  When I deploy the app to the device with the -l flag, I get a the following error:</p>
  
  <pre><code>net::ERR_CONNECTION_TIMED_OUT  
  </code></pre>
  
  <p>I thought it might be a firewall issue so I tried the following,  none of which worked:</p>
  
  <p>OS: Windows 10. Firewall and anti-virus: standard windows defender bundled with the OS.</p>
  
  <ol>
  <li>I added a rule to open ports 8100, 35729, 53703 (inbound and outbound, to be sure).</li>
  <li>Disabled the firewall on all network types.</li>
  <li>Also disabled the antivirus.</li>
  <li>Changed USB ports I was using to deploy the app to device!</li>
  </ol>
  
  <p>So far I've found:</p>
  
  <p>I cant access the dev server i.e. staticIP:8100 from Chrome on my device. 
  I also tried pinging and tracerting my PC from other computers within the network and both timed out. </p>
  
  <p>However, I am able to ping my mobile device and other network computers from my PC. It's inbound pings that timeout. </p>
  
  <p>I fiddled with network settings to ensure PC discovery was on and filesharing was enabled. I also enabled file and printer sharing rules (to domain level).</p>
  
  <p>I think the problem accessing staticIP:8100 from elsewhere in my network (including the mobile device itself) is the cause of the time out error - is there some obscure network setting I might have missed that could be blocking access to the host PC from within the network? </p>
  
  <p>I am able to access shared folders on my PC from another networked PC and my PC is showing as present in the network on other network computers. </p>
  
  <p>(Other things I've tried: 
  I also played around with the changes to config.xml suggested elsewhere on Stackoverflow and further afield, these made no difference and I suspect the real problem is a network setting somewhere. I've also updated Node, Cordova and Ionic).</p>
  
  <p>Ionic info: </p>
  
  <pre><code>cli packages:
  
    @ionic/cli-utils  : 1.19.2
    ionic (Ionic CLI) : 3.20.0
  
  global packages:
  
    cordova (Cordova CLI) : 8.0.0
  
  local packages:
  
     @ionic/app-scripts : 3.1.8
     Cordova Platforms  : android 7.0.0
     Ionic Framework    : ionic-angular 3.9.2
  
  System:
  
     Node : v8.9.0
     npm  : 5.8.0
     OS   : Windows 10
  
  Environment Variables:
  
     ANDROID_HOME : not set
  
  Misc:
  
     backend : pro
  </code></pre>
  
  <p>Any suggestions very welcome!</p>
  
  <p>Thanks. </p>