1-11 HTTP ConfigurationWhen configuring HTTP, go to these sections for information you are interested in:z HTTP Overviewz Enabling the HTTP Servicez HTTP Configurationz Associating the HTTP Service with an ACLz Displaying and Maintaining HTTPHTTP 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 WorksIn the HTTP, the client/server mode is used for communication. The client and the server exchangemessages 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 onto the device using the HTTP protocol with HTTP service enabled, accessing andcontrolling the device with Web-based network management.To implement security management on the device, you can use the following methods to enhance thesecurity 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 (80 or 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 StandardsRFC 1945: Hypertext Transfer Protocol – HTTP/1.0Enabling the HTTP ServiceThe device can act as the HTTP server and the users can access and control the device through theWeb function only after the HTTP service is enabled.
