The same is true for mail The mail service is store and forward Sometimes it

The same is true for mail the mail service is store

This preview shows page 3 - 5 out of 28 pages.

providing correct information over its Web site and that the Web site is usually up. The same is true for mail. The mail service is store and forward. Sometimes it takes a while for a message to be delivered. If inbound mail is delayed due to a system failure, it is not a big deal to the organization. Inbound mail is not critical for day-to-day business and thus the source of the e-mail does not need to be verified beyond the source e-mail address. Now think about the requirements for commerce. The organization still wants to provide a service to the public (for business-to-consumer e-commerce, anyway); however, the organization must know who is ordering goods and who is paying for them. At the very least, the organization must verify the identity of the person ordering the goods. Since we do not have universal identity cards, the organization must use some other form of identification. Most often it is a credit card in conjunction with the shipping address for the goods. Another new aspect of e-commerce services is the need to keep some information confidential. The information may be what is being sold (so that the organization is properly compensated for the information), customer information that has been held for safekeeping, or it may be the information used in the purchase (such as credit card numbers). These two primary differences, verification and confidentiality, differentiate the e-commerce services from regular DMZ services. There is one other issue that must be taken into account when e-commerce is discussed. That is availability. No longer is the Web site just P:\010Comp\Begin8\957-8\ch17.vp Friday, May 09, 2003 9:24:52 AM Color profile: Generic CMYK printer profile Composite  Default screen
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Begin8 / Network Security: A Beginner’s Guide / Maiwald / 222957-8 / 17 Blind Folio 17:406 for information about an organization. Now the e-commerce site generates revenue and provides a service to the customers. Availability becomes a critical security issue for the e-commerce site. Examples of E-Commerce Services When we think about applying security to e-commerce services, we can think in terms of the four basic security services discussed in Module 4: confidentiality, integrity, availability, and accountability. We can also assume that availability is an issue for any kind of e-commerce. The issues surrounding the other three services differ depending on the type of e-commerce service that you offer. The following sections provide three examples of how security may be needed around e-commerce services. Selling Goods Your organization wants to sell goods to the public via the Internet. The basic concept is that the public will come to your Web site, examine your goods, and order the goods for shipment. Payment will be provided through a credit card and the goods will be shipped using the most economical method.
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