title: Not able to telnet / ping server installed on virtual machine
body: <p>I am trying to establish connection between ZABBIX SERVER which has been installed on Ubuntu Virtual Machine and ZABBIX AGENT which has been installed on my local machine (windows). </p>
  
  <p>I'm not sure whether this is problem with zabbix.server.conf and zabbix.agent.conf files OR problem with Virtual Machine. So any suggestions / advice is much appreciated !</p>
  
  <p>Zabbix Server Details: ( installed on Ubuntu )</p>
  
  <ol>
  <li><p>ip address
  <img src="https://i.stack.imgur.com/hwjCS.jpg" alt="enter image description here"></p></li>
  <li><p>VM NAT details 
  <img src="https://i.stack.imgur.com/aMKKB.jpg" alt="enter image description here"></p></li>
  </ol>
  
  <p>Zabbix Agent Details ( installed on Windows )</p>
  
  <ol>
  <li><img src="https://i.stack.imgur.com/WePUS.jpg" alt="enter image description here"></li>
  </ol>
  
  <p>Testing between Agent (on windows) and server ( on ubuntu )</p>
  
  <ol>
  <li><p>pinging success from server to agent 
  <img src="https://i.stack.imgur.com/JwS5i.jpg" alt="enter image description here"></p></li>
  <li><p>pinging failure from agent to server
  <img src="https://i.stack.imgur.com/iv7jq.jpg" alt="enter image description here"></p></li>
  <li><p>telnet failure in both cases 
  <img src="https://i.stack.imgur.com/3JNyx.jpg" alt="enter image description here"></p>
  
  <p>and </p>
  
  <p><img src="https://i.stack.imgur.com/xFjeR.png" alt="enter image description here"></p></li>
  </ol>
  
  <p>Note: Server is running and also agent is running </p>
  
  <p>Troubleshooting Based on <strong>Ansgar</strong> Answer:</p>
  
  <ol>
  <li><p>port forwarding
  <img src="https://i.stack.imgur.com/VUDAP.jpg" alt="enter image description here"></p></li>
  <li><p>tcptrace on ubuntu
  <img src="https://i.stack.imgur.com/gn0F1.jpg" alt="enter image description here"></p>
  
  <p>as you mentioned it shows open connection </p></li>
  <li><p>tcptrace on windows
  <img src="https://i.stack.imgur.com/mZd4s.jpg" alt="enter image description here"></p>
  
  <p>still connection is closed, what am i doing wrong in Port forwarding ? i also tried with  host id as 127.0.0.1 </p></li>
  </ol>