title: Access gunicorn flask server without specifying port name
body: <p>I have a small mini blog flask application. I execute this application like this:</p>
  
  <blockquote>
    <p>$ gunicorn gunluk:app -p gunluk.pid -b 0.0.0.0:8000</p>
  </blockquote>
  
  <p>I may access it like this:</p>
  
  <p><a href="http://programlama.tk:8000/" rel="nofollow noreferrer">http://programlama.tk:8000/</a></p>
  
  <p>But what I'd like to do is access site without specifying port name:</p>
  
  <p><a href="http://programlama.tk" rel="nofollow noreferrer">http://programlama.tk</a></p>
  
  <p>List of the current ip tables rules:</p>
  
  <blockquote>
    <p>$ sudo iptables -nvL</p>
  </blockquote>
  
  <pre><code>Chain INPUT (policy DROP 0 packets, 0 bytes)
   pkts bytes target     prot opt in     out     source               destination
     62  7092 ACCEPT     tcp  --  *      *       0.0.0.0/0            0.0.0.0/0            tcp dpt:8000
    593 67706 ACCEPT     all  --  lo     *       0.0.0.0/0            0.0.0.0/0
      0     0 ACCEPT     tcp  --  *      *       0.0.0.0/0            0.0.0.0/0            tcp dpt:22
      0     0 ACCEPT     tcp  --  *      *       0.0.0.0/0            0.0.0.0/0            tcp dpt:80
      0     0 ACCEPT     tcp  --  *      *       0.0.0.0/0            0.0.0.0/0            tcp dpt:8080
      0     0 ACCEPT     tcp  --  *      *       0.0.0.0/0            0.0.0.0/0            tcp dpt:5000
   3631 3641K ACCEPT     all  --  enp1s0 *       0.0.0.0/0            0.0.0.0/0
      0     0 ACCEPT     tcp  --  *      *       0.0.0.0/0            0.0.0.0/0            tcp dpt:8000
  
  Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
   pkts bytes target     prot opt in     out     source               destination
  
  Chain OUTPUT (policy ACCEPT 0 packets, 0 bytes)
   pkts bytes target     prot opt in     out     source               destination
    655 74798 ACCEPT     all  --  *      lo      0.0.0.0/0            0.0.0.0/0
   2790  322K ACCEPT     all  --  *      enp1s0  0.0.0.0/0            0.0.0.0/0
  </code></pre>
  
  <p>Also port forwarding settings in the router interface are as follows:</p>
  
  <pre><code>Interface  Protocol    Input Port  Output Port    Server IP Adress  Name    Status
  nas_8_35     TCP       5000-5000    5000-5000   192.168.1.2     5000    Active
  nas_8_35     TCP       8080-8080    8080-8080   192.168.1.2     web2    Active
  nas_8_35    TCP/UDP    8000-8000    8000-8000   192.169.1.2     8000    Active
  nas_8_35    TCP/UDP      80-80        80-80     192.168.1.2     http    Active
  </code></pre>
  
  <p>I don't have a static ip, I use a free dynamic dns service with a dynamic ip address.</p>