METHOD FOR ANALYZING AND DETECTING THE NUMBER OF IP SHARING DEVICES AND DETERMINING WHETHER A NAT IS USED BY ANALYZING A TRAFFIC WHICH IS MIRRORED, AND A METHOD FOR SELECTIVELY PERMITTING AND SECLUDING A USER PC

摘要

PURPOSE: A method for detecting the number of IP sharing devices and a method for permitting and secluding a user PC are provided to analyze and detect how many clients exist in a network environment using a NAT(Network Address Translation) scheme.;CONSTITUTION: An UA(User-Agent) value of a packet header message is extracted by analyzing a traffic. The UA value is analyzed based on an identification value or an IP(Internet Protocol) and managed by being compared with a UA pool. The UA value is saved every regular time interval unit. The number of shared PCs is calculated by gathering the UA value saved every regular time interval unit based on the identification value or the IP according to a predetermined time or period(S111). The number of shared PCs is corrected by applying a correction rule. The corrected shard number is saved in a database based on the identification value or the IP.;COPYRIGHT KIPO 2010