H3C Technologies H3C S5120 Series Switches - Manual (Page 695)

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HTTP Configuration
This chapter includes these sections:
z HTTP Overview
z Enabling the HTTP Service
z HTTP Configuration
z Associating the HTTP Service with an ACL
z Displaying and Maintaining HTTP
z HTTP Configuration Example
HTTP Overview
The Hypertext Transfer Protocol (HTTP) is used for transferring web page information across the
Internet. It is an application-level protocol in the TCP/IP protocol suite. The connection-oriented
Transport Control Protocol (TCP) is adopted on the transport layer.
Currently, HTTP/1.0 is supported on the device.
How HTTP Works
The client/server mode is used for communication in HTTP. The client and the server exchange
messages by following these procedures:
1) A TCP connection is created between the client and the server. Typically, the port number is 80.
2) The client sends a request to the server.
3) The server processes the request and sends back a response.
4) The TCP connection is closed.
Logging In to the Device Through HTTP
You can log in to the device by using the HTTP protocol with HTTP service enabled, accessing and
controlling the device with Web-based network management.
To implement security management on the device, use the following methods to enhance the security of
the device.
z Enable HTTP service only when necessary.
z Change the port number of the HTTP service as a port number not commonly used (for example
8080), thus reducing attacks from illegal users on the HTTP service.
z Associate the HTTP service with an ACL to let pass only the filtered clients.
Protocols and Standards
RFC 1945: Hypertext Transfer Protocol – HTTP/1.0