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HTTP
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The Hypertext Transfer Protocol (HTTP), one of the protocols in the TCP/IP suite, was originally developed to publish and retrieve HTML pages and is now used for distributed, collaborative information systems. HTTP is used across the WWW for data transfer and is one of the most used application protocols.
HTTP specifies a request/response protocol. When a client, typically a web browser, sends a request message to a server, the HTTP protocol defines the message types the client uses to request the web page and also the message types the server uses to respond. The three common message types are GET, POST, and PUT.
GET is a client request for data. A web browser sends the GET message to request pages from a web server. As shown in the figure, once the server receives the GET request, it responds with a status line, such as HTTP/1.1 200 OK, and a message of its own, the body of which may be the requested file, an error message, or some other information.
POST and PUT are used to send messages that upload data to the web server. For example, when the user enters data into a form embedded in a web page, POST includes the data in the message sent to the server.
PUT uploads resources or content to the web server.
Although it is remarkably flexible, HTTP is not a secure protocol. The POST messages upload information to the server in plain text that can be intercepted and read. Similarly, the server responses, typically HTML pages, are also unencrypted.
For secure communication across the Internet, the Secure HTTP (HTTPS) protocol is used for accessing or posting web server information. HTTPS can use authentication and encryption to secure data as it travels between the client and server. HTTPS specifies additional rules for passing data between the Application layer and the Transport Layer.
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Cisco Configuration Professional CCP:
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Cisco Configuration Professional is offered in two versions
Cisco Configuration Professional offers smart wizards and advanced configuration support for LAN and WAN interfaces, Network Address Translation (NAT), stateful and application firewall policy, IPS, IPSec and SSL VPN, QoS, and Cisco Network Admission Control policy features.
IT managers can easily organize and manage multiple routers at a single site.
Cisco Configuration Professional Offers:
Monitoring of router status
Troubleshooting of WAN and VPN connectivity issues
Cisco Configuration Professional Express is a GUI-based embedded device management tool for Cisco Integrated Services Routers (ISRs). It is available on the flash of the router and used for bootstrapping and basic configurations.
Cisco Configuration Professional Express Offers:
Basic configuration of router WAN and LAN interfaces
Hostname, Dynamic Name Server (DNS), and Dynamic Host Configuration Protocol (DHCP) configurations
User Management for the router
Configuration of plug-n-play server
Dashboard, basic troubleshooting, and command line interface (CLI) tool
With Cisco Configuration Professional you can configure and monitor your Cisco routers without using the Cisco IOS Software CLI. If you are not an expert with Cisco IOS Software, the Cisco Configuration Professional GUI can help you in your day-to-day operations. The application:
Provides easy-to-use smart wizards
Assists you through comprehensive online and video help
