Page 185 - DCAP512_WAP_AND_WML

Unit 12: Secure Application

offers a Circuit Breaker feature which enables subscribers to set a maximum amount they Notes
want to spend in a month for the service.
With WPA 2 and 802.1X provisions it offers the high level of security available on wireless
network. Mr Prakash Bajpai, Founder, Managing Director and CEO, Tikona Digital
Networks, said, “The current broadband internet scenario is similar to what the mobile
scenario was 10 years ago. India has just a little under 10 million broadband while China
has more than 120 million broadband. Wireless broadband is the only option for India to
increase its broadband base to levels that are similar to China’s.”

12.4 Summary

 This intro to wireless networking setup and security is written with the assumption that
the reader has a basic understanding of wired networks, because in terms of protocol,
wireless works almost the same way.

 The difference is in the wireless component and associated hardware configuration.
 The WAP specification standardizes a set of protocols intended to send content to mobile
devices like cellular phones, pagers and personal digital assistants (PDAs).

 It defines application environment and transport protocols. It utilizes present Internet
technologies and many of its components.
 The WAP application is developed taking into account the limitations of the handheld
devices.
 WAP has no support for application sessions built in to its definition.
 You will have to manually create them by authenticating the user and tracking his progress.

 The next few sections will address how to do this, but it should be remembered that the
WML applications should be as simple as possible to use – you should minimize the
information burden you place on the user.
12.5 Keywords

PDAs: personal digital assistants
SSL: Secure Sockets Layer
TLS: Transport Layer Security
WAE: Wireless Application Environment

WDL: Wireless Datagram Layer
WDP: WAP Datagram Protocol
WTLS: Wireless Transport Layer Security

12.6 Review Questions

1. How does communication between the mobile terminals and network servers take place?
2. What is WML? How does it differ from HTML?
3. What are the functionalities of the WAP proxy? What does the WAP gateway do?

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