Liu Xuesong calculated 1814 201 821 121 116
1 Purpose
Familiar with Packet Tracer tool. Analysis caught HTTP packets, in-depth understanding: HTTP protocol, including syntax, semantics, timing.
2 Experimental content
The client sends a request message to the server, the server sends a response message to the client. Specific include:
- Establish a network topology
- Configuration parameters
- Ethereal
- Analysis of the data packet
3. The test report
1. Given the network topology is as follows
The establishment of a pc and a terminal server and connected.
2. Configuration Parameters
(1): Configure the pc ip address as shown below:
(2): ip address is a server-side:
3. capture and analyze packets
Hyperlink is first capture, will link the client to the url
And only selected http protocol
Then carried capture.
Ethereal results are as follows
After the start analyzing the data packet capture
Firstly request packet
This is because the packet trace in the above simulation, the request packet is not issued in particular detail
Usually the default http version 1.1
Accept-Language: en-us hope that the user priority to get the English version of the document
Accept: * / * acceptance of any type
Connection: close finish after telling the server to send the requested document can release the connection.
Host: 192.168.1.1 given domain host
For the response packet
Connect: close and as written above.
Content-Length: 369 indicates the byte length of the packet
Content-Type: text / html media type information to indicate the specific request, here is the HTML format
server: PT-Server / 5.2 should refer to the response packet to object it.