title: Google Compute Engine: How can I disable the firewall of VM instance?
body: <p>I have used firewall rules but I still cannot receive traffic on vm instance. I want to allow http server incoming connection. By default google compute engine does not allow incoming traffic outside the network, so you have to create firewall rules. In google cloud platform documentation it suggests to disable operating system firewall. To disable it I need my user password, which I never created. So what to do now? I need password for my user, I am the creator of vm instance. Any help?
  These are my firewall settings:</p>
  
  <pre><code>saad_hussain@saad:~$ gcloud compute firewall-rules list 
  NAME                    NETWORK  SRC_RANGES    RULES                         SRC_TAGS  TARGET_TAGS
  default-allow-http      default  0.0.0.0/0     tcp:80                                  http-server
  default-allow-https     default  0.0.0.0/0     tcp:443                                 https-server
  default-allow-icmp      default  0.0.0.0/0     icmp
  default-allow-internal  default  10.128.0.0/9  tcp:0-65535,udp:0-65535,icmp
  default-allow-rdp       default  0.0.0.0/0     tcp:3389
  default-allow-ssh       default  0.0.0.0/0     tcp:22
  http                    default  0.0.0.0/0     tcp:80
  https                   default  0.0.0.0/0     tcp:80
  </code></pre>