title: Nginx : Cannot listen on port 80 ... only port 8080 works on OSX 10.11
body: <p>OSX 10.11
  I installed the latest nginx 1.9.9 (from source and compiled )
  the configuration file /usr/local/conf/nginx.conf syntax is ok</p>
  <p>when listening on port 8080 no problem I can request <a href="http://example.local:8080" rel="nofollow noreferrer">http://example.local:8080</a></p>
  <pre><code>server {
      listen       8080;
      server_name  example.local;
      root HTML;
  </code></pre>
  <p>And then run:</p>
  <pre><code> sudo lsof -i -P | grep -i &quot;80&quot;
   nginx     8254           root   10u  IPv4 0x643a3abbad7bf485      0t0     TCP *:8080 (LISTEN)
   nginx     8392           yves   10u  IPv4 0x643a3abbad7bf485      0t0    TCP *:8080 (LISTEN)
  </code></pre>
  <p>BUT when I change the port to 80, I cannot reach <a href="http://example.local:80" rel="nofollow noreferrer">http://example.local:80</a></p>
  <pre><code>server {
      listen       80;
      server_name  example.local;
      root html;
  
  sudo nginx -s reload
  nginx     8254           root   10u  IPv4 0x643a3abbad7bf485      0t0    TCP *:8080 (LISTEN)
  nginx     8254           root   18u  IPv4 0x643a3abbadbb9485      0t0    TCP *:80 (LISTEN)
  nginx     8430           yves   10u  IPv4 0x643a3abbad7bf485      0t0    TCP *:8080 (LISTEN)
  nginx     8430           yves   18u  IPv4 0x643a3abbadbb9485      0t0    TCP *:80 (LISTEN)
  </code></pre>
  <p>Safari canot open the page
  however I can still request <a href="http://example.local:8080" rel="nofollow noreferrer">http://example.local:8080</a></p>
  <p>very weird .... Nginx IS LISTENING on 80 ...  what can I do ?</p>