Programmable Device Circuits and Systems

V. Ramya ¹, R. Abinaya ¹, G. Vinothini ¹

Affiliations
1 Department of Computer Science & Engineering, Annamalai University, Chidambaram, Tamil Nadu, IN

Abstract

All web servers that need to be guarded from buffer overflow attack must be registered with the proxy server, so that all user requests are directed towards proxy server, which in turn handles each request and processes the request using disassembling algorithm, if that request is found as legitimate request proxy server requests original web server else the request is blocked. This proxy server disassembles and extracts instruction sequences from a request, and then analyzes instruction sequences to find executable machine code. A machine code is a sequence of machine instructions in the form of hexadecimal executed by the machine in response to a service request. The proxy server is based on disassembling process. The BeaEngine is used for disassembling. The proxy server blocks the buffer overflow attack requests from reaching the web server.

Keywords

Attack Model, Buffer Overflow, Experiments, System Design.

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V. Ramya ¹, K. Karthick ¹, Subash Prasad ¹

Affiliations
1 Department of Computer Science and Engineering, Annamalai University, Tamilnadu, IN

Abstract

In this paper we are going to present the embedded based controller system that automatically mutes the volume of the television or any music system when an incoming call is arrived on a telephone. Very often when enjoying music or television at high audio level, we may not be able to hear a telephone ring and thus we miss an important incoming phone call. To overcome this situation, an embedded based system is designed. This proposed system would automatically light a bulb on arrival of a telephone ring and simultaneously mute the music system/TV audio for the duration the telephone handset is off-hook. Lighting of the bulb would not only indicate an incoming call but also help in locating the telephone during darkness. The whole project is using PIC microcontroller along with suitable telephone line interfacing circuitry.

Keywords

Embedded Systems, Micro-Controllers, RTOS, Testing.

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