ABSTRACT
In the context of computer networking, an application-level gateway (also known as ALG or application layer gateway) consists of a security component that augments a firewall or NAT employed in a computer network. It allows customized NAT traversal filters to be plugged into the gateway to support address and port translation for certain application layer "control/data" protocols such as FTP, Bit-Torrent, SIP, RTSP, file transfer in IM applications etc. In order for these protocols to work through NAT or a firewall, either the application has to know about an address/port number combination that allows incoming packets, or the NAT has to monitor the control traffic and open up port mappings (firewall pinhole) dynamically as required. Legitimate application data can thus be passed through the security checks of the firewall or NAT that would have otherwise restricted the traffic for not meeting its limited filter criteria.
TABLE OF CONTENTS
TITLE PAGE
CERTIFICATION PAGE
DEDICATION
ACKNOWLEDGEMENT
ABSTRACT
TABLE OF CONTENTS
CHAPTER ONE
INTRODUCTION
STATEMENT OF PROBLEMS
PURPOSE OF THE STUDY
IMPORTANCE OF THE STUDY
DEFINITION OF TERMS
ASSUMPTION OF THE STUDY
CHAPTER TWO
LITERATURE REVIEW
ALG SERVICE IN MICROSOFT WINDOWS
CHAPTER THREE
UNIFIED SECURITY GATEWAY
DEPLOYMENT
KEY FEATURES
SECURITY
CHAPTER FOUR
INSTANT MESSAGING
COMPLIANCE
MANAGEMENT
CHAPTER FIVE
CONCLUSION
5.1 LIMITATION OF THE STUDY
5.2 SUGGESTION FOR FURTHER RESEARCH
5.3 REFERENCES
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CITE THIS WORK
(2012, 10). A Security Gateway.. ProjectStoc.com. Retrieved 10, 2012, from https://projectstoc.com/read/107/a-security-gateway
"A Security Gateway." ProjectStoc.com. 10 2012. 2012. 10 2012 <https://projectstoc.com/read/107/a-security-gateway>.
"A Security Gateway.." ProjectStoc.com. ProjectStoc.com, 10 2012. Web. 10 2012. <https://projectstoc.com/read/107/a-security-gateway>.
"A Security Gateway.." ProjectStoc.com. 10, 2012. Accessed 10, 2012. https://projectstoc.com/read/107/a-security-gateway.
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