title: How to create a packet which is openable in wireshark or omnipeek?
body: <p>till now I understood that every packet will be in hexadecimal format. so, I tried of creating a packet 80 20 10 12 F5 10  .... like this and saved in a file with extension of .pcap .  I tried to open the packet using wireshark, but it was telling that it is a unsupported packet. I did not understand why its happening. I want to is there any other procedure to create a packets? 
  can we create a packet in .pcap format?</p>
  
  <p>I am new to this sniffer. so could you clarify my doubt and suggest me a solution to it.</p>
  
  <p>thank you,</p>
  
  <p>regards,
  sathish</p>