title: Nginx: proxy_bind v/s proxy_pass
body: <p>I am sorry in advance if its a dumb question but being new to Nginx, I came across the 2 directives inside server context: </p>
  
  <blockquote>
    <p>proxy_bind</p>
  </blockquote>
  
  <p>and </p>
  
  <blockquote>
    <p>proxy_pass.</p>
  </blockquote>
  
  <p>I know that if I need to send different request from the client to different browsers, I will need to define <strong>proxy_pass</strong> directive defining the domain name and port.</p>
  
  <p>But then why is proxy_bind needed. 
  Any help is welcome.</p>
  
  <p>Thanks in advance :)</p>