1-11 HTTP ConfigurationThis chapter includes these sections:z HTTP Overviewz Enabling the HTTP Servicez HTTP Configurationz Associating the HTTP Service with an ACLz Displaying and Maintaining HTTPz HTTP Configuration ExampleHTTP OverviewThe Hypertext Transfer Protocol (HTTP) is used for transferring web page information across theInternet. It is an application-level protocol in the TCP/IP protocol suite. The connection-orientedTransport Control Protocol (TCP) is adopted on the transport layer.Currently, HTTP/1.0 is supported on the device.How HTTP WorksThe client/server mode is used for communication in HTTP. The client and the server exchangemessages 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 HTTPYou can log in to the device by using the HTTP protocol with HTTP service enabled, accessing andcontrolling the device with Web-based network management.To implement security management on the device, use the following methods to enhance the security ofthe 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 example8080), 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 StandardsRFC 1945: Hypertext Transfer Protocol – HTTP/1.0
