E-Commerce.

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Presentation transcript:

E-Commerce

Managing the Marketplace Technology Infrastructure Topology Security

Technology TCP/IP – Transmission control protocol/Internet protocol Data transport Circuit switching Packet switching A dedicated link between a group of users Packet Switching Can share the network and bandwidth

Technology.. IP – Routing – Routing and addressing Setting a route map dynamically between a sender and receiver

Technology… Addressing InterNIC – Internet Network Information Center A unique 32-bit number to identify networks within TCP/IP (e.g., 127.16.10.1) DNS server - www.buet.ac.bd is converted to an unique IP 203.112.220.202 IPv4

Technology Regional Internet Registries (RIR) Manages allocation and registration of Internet number resources NAT – Network address translator Converts a private IP address to public IP address IPv4 will be depleted by 2015-2020 IPv6 – 128-bit address space (6×16-bits) 2001:0DB8:0000:1111:0000:0000:0000:0200 FE80:0000:0000:0000:0123:4567:89AB:CDEF

Technology… Internet Intranet Extranet Interconnection of networks Interconnection over the internet or LAN Extranet A common platform for interconnection between vendors, suppliers, producers over the internet

Infrastructure NII – network traffic must be forwarded through Cable TV TV and Radio broadcasting Telephone networks Cellular communications Computer networks Internet

Infrastructure MDI – a link between client and server EPI – web BSI – EDI (formatted) Emails (unformatted) HTTP EPI – web URL Protocol (e.g., HTTP) HTML BSI – Encryption Payments Fund transfer Authentication

Infrastructure E-Commerce Application

Electronic Publishing PDF HTML

Topology Networks can be a cooperation within Stakeholders - Internet Adobe supports customers and provide financial and other reports to investors Employees - Intranet Business partners - Extranet A link between Buyer and supplier

Security Access control to the server Authentication

Security… Network security components often include: Antivirus and antispyware Firewall filtering Restricts packets with designated IP address Dedicated firewall systems A device dedicated for intranet to Internet Depending on businesses, restricts on Unauthorized web applications Unauthorized personnel Access control lists (ACL) Intrusion prevention systems (IPS) Virtual Private Networks (VPNs)

Encryption Sniffer program - looking for a number format for credit cards (e.g., 1234 5678 9012 3456) Can be of confidential information or financial reports or business ideas PGP – Pretty Good Privacy A readily available web encryption Encryption Public key - PGP Public - Private key

PGP

Decrypt the following… IQQF PKIJV!