title: Is Azure NSG IP whitelist safe enough?
body: <p>I am now using Azure NSG to only allow trusted IPs to access my backend service hosted on Azure IaaS VMs in my own VNET.</p>
  
  <p>My question is, is IP whitelist strategy safe enough? I am wondering if it is possible that the hacker forge the source IP to be one of the IP in my whitelist so that be able to access my service?</p>
  
  <p>I am not familiar to the hacker techniques, don't know if it is possible...</p>