IP is stand for Internet Protocol, is responsible for moving packet of data from node to node. IP forwards packet based on a four byte destination address called IP number. In the Internet, the authorities assign ranges of numbers to different organization. The organizations assign groups of their numbers to their departments. IP operates on gateway machines, move data from department to organization to region and then the world (Gilbert, 1995)
DNS is stand for Domain Name System, is an Internet service that transforms domain names into IP addresses. As domain names are alphabetic for harman readable and easier to remember, the Internet/network only know on IP address. Each time we use a domain name, therefore, a DNS service used to translate the name into corresponding IP address (Webopedia 2009).
2. Describe the TCP protocol. How is it related to the IP protocol?
TCP is stand for Transmission Control Protool, is responsible for verifying the correct delivery of data between client and server. Data can be lost in the intermediate network. TCP adds support to detect errors or lost data, and to trigger retransmission until the data is correctly and completely received by the client/server (Gilbert, 1995).
TCP is stand for Transmission Control Protool, is responsible for verifying the correct delivery of data between client and server. Data can be lost in the intermediate network. TCP adds support to detect errors or lost data, and to trigger retransmission until the data is correctly and completely received by the client/server (Gilbert, 1995).
TCP/IP is also called Internet Protocol Suite. TCP and IP work together to form the set of communication protocols used for the Internet and other similar networks. The TCP/IP model consists of four layers. The lowest layer is Link Layer, then Internet Layer, Transport Layer and the highest layer is Application Layer. The TCP is in the Transport Layer and IP is in the Internet Layer (Wikipedia 2009a).
3. What do you know about building e-business applications as an Intranet, Extranet, Web portal, B2B, B2C or Virtual Private Network (VPN)? Find some examples on the Web
For data security issue B2B e-business may building in an extranet for outside office commuciation (Phan ,2003). An extranet is a private network that uses Internet protocols, and it is possible for the public telecommunication system to securely share the organization's information or operations with suppliers (B2B), vendors (B2B), partners (B2B), customers (B2C) or other businesses (B2B) (Wikipedia 2009b).
Users can log into one place and have access to many other intra/extranet sites by only key in the user ID and passwords (Phan, 2003). An intranet is also a private network that use Internet technologies to securely share the organization's information or operational (Wikipedia 2009c).
When the company extend their Web site for Internet access through the Internet service provider (ISP), they may need a more secure solution for B2B or B2C communication in an open environment. Virtual private network (VPN) is a good solution for B2B communication (Phan, 2003). As it needs some specific setting to start a VPN communication, it is only suitable for B2B environment. Another issue suitable for B2C secure communication is Secure Sockets Layer (SSL).
For data security issue B2B e-business may building in an extranet for outside office commuciation (Phan ,2003). An extranet is a private network that uses Internet protocols, and it is possible for the public telecommunication system to securely share the organization's information or operations with suppliers (B2B), vendors (B2B), partners (B2B), customers (B2C) or other businesses (B2B) (Wikipedia 2009b).
Users can log into one place and have access to many other intra/extranet sites by only key in the user ID and passwords (Phan, 2003). An intranet is also a private network that use Internet technologies to securely share the organization's information or operational (Wikipedia 2009c).
When the company extend their Web site for Internet access through the Internet service provider (ISP), they may need a more secure solution for B2B or B2C communication in an open environment. Virtual private network (VPN) is a good solution for B2B communication (Phan, 2003). As it needs some specific setting to start a VPN communication, it is only suitable for B2B environment. Another issue suitable for B2C secure communication is Secure Sockets Layer (SSL).
Examples:
The Intel Web site for the Resellers (B2B), they need to login in with their ID and password:
Stratford Hall Web site for business customer (B2B) to order their card in the Web:
The ebay Web site for customer (B2C) to buy and sell their product, they need to login in or register in the Web. The side is protected by SSL:
4. What role can a VPN play in business-to-business e-commerce?
Virtual Private Network (VPN) make communications and exchanges always possible and secure in use of Internet (). The role of VPN in the business-to-business (B2B) environment allowing users to connect to the corporate network whenever, wherever or however they require. Users can benefit of the Internet public framework to constitute a VPN as an economic alternative to the leased line network. The advantage of VPN compared to leased lines is more flexible for B2B customers (Karp, 2001).
Virtual Private Network (VPN) make communications and exchanges always possible and secure in use of Internet (). The role of VPN in the business-to-business (B2B) environment allowing users to connect to the corporate network whenever, wherever or however they require. Users can benefit of the Internet public framework to constitute a VPN as an economic alternative to the leased line network. The advantage of VPN compared to leased lines is more flexible for B2B customers (Karp, 2001).
Reference
- Gilbert, H. (1995), Introduction to tcp/ip, PCLT. Retrieved from http://www.yale.edu/pclt/COMM/TCPIP.HTM on 10th Mar, 2009
- Karp, H. (2001), White paper: providing dynamic vpn service for b2b, FORM Consortium, IST-1999-10357/ATOS/WP6/3010.
- Phan, D. D. (2003), E-business development for competitive advantages: a case study, Information & Management, 40, 581-590.
- Webopedia (2009), Dns, Webopedia. Retrieved from http://www.webopedia.com/TERM/D/DNS.html on 10th Mar, 2009
- Wikipedia (2009a), Internet Protocol Suite, Wikipedia. Retrieved from http://en.wikipedia.org/wiki/TCP/IP on 10th Mar, 2009
- Wikipedia (2009b), Extranet, Wikipedia. Retrieved from http://en.wikipedia.org/wiki/Extranet on 11th Mar, 2009
- Wikipedia (2009c), Extranet, Wikipedia. Retrieved from http://en.wikipedia.org/wiki/Intranet on 11th Mar, 2009
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