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WiBro(Wireless Broadband) service is the world standardized fourth-generation communications in Korea. The services through internet-based applications using WiBro communication-based is increasing. WiBro service in the Internet-based applications when using the service, the application may need to analyze the vulnerability. In this paper, we use the Internet when in WiBro service, to analyze the vulnerability. And, Internet-based applications for vulnerabilities that could lead to hacker attacks is analyzed. It will be studied that security measures through analysis of vulnerability of WiBro services and applications. 키워드 와이브로, 인터넷기반 응용프로그램, 취약점, 해킹 공격, 보안대책

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VoIP service by taking advantage of the current PSTN network and internet over the existing telephone network at an affordable price allows you to make voice calls to the service is being expanded. However, the security of public must be maintained for security vulnerabilities in Smart Phone VoIP case problems arise, and is likely to be attacked by hackers. In this paper, the Internet, using wired and Smart Phone VoIP services may occur during analysis of the type of incident and vulnerability analysis, the eavesdropping should conduct an attack. Smart Phone VoIP with institutional administration to analyze the vulnerability OmniPeek, AirPcap the equipment is installed in a lab environment to conduct eavesdropping attack. Packet according to the analysis and eavesdropping attacks, IP confirmed that the incident as an attack by the eavesdropping as to become the test proves. In this paper, as well as Smart Phone VoIP users, the current administration and the introduction of Smart Phone service and VoIP service as a basis for enhanced security will be provided. 키워드VoIP, Smart Phone, 도청 공격, 보안성