sniffer製作------IP TCP UDP結構

淡淡的烟草味﹌ 2022-08-25 08:27 188阅读 0赞

IPV4頭結構:

<table style="WIDTH: 526px; HEIGHT: 266px"> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      4 
    </div> </td> 
   <td> 
    <div>
      8 
    </div> </td> 
   <td colspan="2"> 
    <div>
      16 
    </div> </td> 
   <td colspan="4"> 
    <div>
      32 bits 
    </div> </td> 
  </tr> 
  <tr> 
   <td>  Ver. </td> 
   <td>  IHL </td> 
   <td colspan="2">  Type of service </td> 
   <td align="center" colspan="4">Total length </td> 
  </tr> 
  <tr> 
   <td colspan="4">  Identification </td> 
   <td>  Flags </td> 
   <td colspan="3">Fragment offset </td> 
  </tr> 
  <tr> 
   <td colspan="2">  Time to live </td> 
   <td align="center" colspan="2">Protocol </td> 
   <td colspan="4">  Header checksum </td> 
  </tr> 
  <tr> 
   <td colspan="8">  Source address </td> 
  </tr> 
  <tr> 
   <td colspan="8">  Destination address </td> 
  </tr> 
  <tr> 
   <td colspan="8">  Option + Padding </td> 
  </tr> 
  <tr> 
   <td colspan="8">  Data </td> 
  </tr> 
  <tr> 
   <td colspan="8"> 
    <div> 
     <span>IP header structure</span> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

IPV6 頭結構:

<table style="WIDTH: 533px; HEIGHT: 269px"> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      4 
    </div> </td> 
   <td> 
    <div>
      4 
    </div> </td> 
   <td> 
    <div>
      16 
    </div> </td> 
   <td> 
    <div>
      24 
    </div> </td> 
   <td> 
    <div>
      32 bits 
    </div> </td> 
  </tr> 
  <tr> 
   <td>  Ver. </td> 
   <td>  Priority </td> 
   <td colspan="3">  Flow label </td> 
  </tr> 
  <tr> 
   <td colspan="3">  Payload length </td> 
   <td>  Next header </td> 
   <td>  Hop limit </td> 
  </tr> 
  <tr> 
   <td colspan="5">  <br>Source address <br>(128 Bits) </td> 
  </tr> 
  <tr> 
   <td colspan="5">  <br>Destination address <br>(128 bits) </td> 
  </tr> 
  <tr> 
   <td colspan="5"> 
    <div> 
     <span>IPv6 header structure</span> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

TCP 頭結構:

<table style="WIDTH: 548px; HEIGHT: 298px"> 
 <tbody> 
  <tr> 
   <td colspan="8"> 
    <div>
      16 
    </div> </td> 
   <td> 
    <div>
      32 bits 
    </div> </td> 
  </tr> 
  <tr> 
   <td colspan="8">  Source port </td> 
   <td>Destination port </td> 
  </tr> 
  <tr> 
   <td colspan="9">  Sequence number </td> 
  </tr> 
  <tr> 
   <td colspan="9">  Acknowledgement number </td> 
  </tr> 
  <tr> 
   <td>  Offset </td> 
   <td>  Resrvd </td> 
   <td>  U </td> 
   <td>  A </td> 
   <td>  P </td> 
   <td>  R </td> 
   <td>  S </td> 
   <td>  F </td> 
   <td>  Window </td> 
  </tr> 
  <tr> 
   <td colspan="8">  Checksum </td> 
   <td>  Urgent pointer </td> 
  </tr> 
  <tr> 
   <td colspan="9">  Option + Padding </td> 
  </tr> 
  <tr> 
   <td colspan="9">  Data </td> 
  </tr> 
  <tr> 
   <td colspan="9"> 
    <div> 
     <span>TCP header structure </span> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

UDP頭結構:

<table style="WIDTH: 550px; HEIGHT: 179px"> 
 <tbody> 
  <tr> 
   <td> 
    <div> 
     <font>16 </font> 
    </div> </td> 
   <td> 
    <div> 
     <font>32 bits </font> 
    </div> </td> 
  </tr> 
  <tr> 
   <td>  <font>Source port </font> </td> 
   <td>  <font>Destination port </font> </td> 
  </tr> 
  <tr> 
   <td>  <font>Length </font> </td> 
   <td>  <font>Checksum </font> </td> 
  </tr> 
  <tr> 
   <td colspan="2">  <font><br>Data<br></font> </td> 
  </tr> 
  <tr> 
   <td colspan="2"> 
    <div> 
     <span>UDP header structure</span> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

參考文獻:1. [http://www.cnblogs.com/davidlili/archive/2006/08/29/489918.html][http_www.cnblogs.com_davidlili_archive_2006_08_29_489918.html]

2. [http://hi.baidu.com/cuiyubing/blog/item/aff01cfaebbb789659ee90c0.html][http_hi.baidu.com_cuiyubing_blog_item_aff01cfaebbb789659ee90c0.html]

3. [http://blog.csdn.net/zy122/archive/2007/01/04/1473850.aspx][http_blog.csdn.net_zy122_archive_2007_01_04_1473850.aspx]

[http_www.cnblogs.com_davidlili_archive_2006_08_29_489918.html]: http://www.cnblogs.com/davidlili/archive/2006/08/29/489918.html
[http_hi.baidu.com_cuiyubing_blog_item_aff01cfaebbb789659ee90c0.html]: http://hi.baidu.com/cuiyubing/blog/item/aff01cfaebbb789659ee90c0.html
[http_blog.csdn.net_zy122_archive_2007_01_04_1473850.aspx]: http://blog.csdn.net/zy122/archive/2007/01/04/1473850.aspx