네트워크가 All-IP망으로 진화하는 현 시점에서, 국제표준기구 및 산업체는 IP 응용에 대한 상용 서비스뿐 아니라 E911이나 감청과 같이 공공 안전을 위한 국가 규제에 필요한 기술 및 표준을 개발중이다. 합법적 감청(Lawful Interception: LI)은 개인의 통신 활동을 보장함과 동시에 국가의 수사권을 보장하기 위하여 법적인 테두리 안에서 그 서비스를 정의하여 실행해 왔다. 그러나, VoIP(Voice over IP) 기술은 사용자의 이동성을 가능하게 하였으며 인터넷에서의 패킷 교환은 기존에 사용하던 물리적 회선의 가로채기로는 더 이상 감청을 수행할 수 없게 되었다. 이에 대표적인 국제 표준기구인 ETSI 등에서는 VoIP를 포함하여 인터넷 망에 연결된 IP 응용 통신 서비스에 대해 LI 연구를 진행하고 있다. 이에 본 고에서는 지난 5월에 있었던 ETSI의 TC LI미팅 내용을 중심으로 LI에 대한 국제 표준기술의 동향을 알아보고자 한다.
KSP Keywords
Lawful interception, Voice-over-IP(VoIP)
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