Plustech Inc.

Soosan Int Co., Ltd.

Kyoung-Pil Kong

Yun-Seok Lee

Kyu-Min Choi

Hyoung-Bae Park

Sung-Goo Kim

Pil-Sang You

Jeong-Ah Kim

Se-Eun Cheon

Sun Min Jeon

The present invention relates to a system and method for authenticating, monitoring, and managing all terminals connected to a wireless/wired network to use Internet. A shared terminal management system comprises a management server, a charging server, a central server, a central authentication G/W server, and a proxy server, and assigns a terminal identification value for every terminal that uses Internet, authenticates terminals by reading and analyzing the assigned terminal identification value, monitors and manages shared terminals used as being connected to one line to classify lines into a basic line and an additional line, and charges for the additional line. The shared terminal identification system for identifying and managing terminals connected to one Internet line comprises a subscriber line authentication unit, a packet collecting unit, a first packet analyzing unit, an element packet transmission unit, a data management unit and a terminal determining unit.

Shared terminal identification system using a network packet and processing method thereof

The present invention provides according to an embodiment a method including analyzing traffic; judging whether NAT (Network Address Translation) use of a client configuring and using a private network as well as a being provided an authorized IP address (an Internet IP address) is allowed or not, for analyzing and detecting a number of sharing terminals; creating a database using data; and formulating a policy by using information in the database, so that when users of the private network connect to the Internet at the same time, permission or blocking of Internet use can be executed selectively.

Method for allowing and blocking a user PC which can use internet at the same time in a private network thereof a method for analyzing and detecting a judgement about whether NAT(network address translation) can be used or not using a traffic data, and the number of terminals sharing NAT

The present invention is related to a method for neutralizing a malicious ARP spoofing attack generated in a local network and in particular, the present invention provides a method for neutralizing an ARP spoofing attack comprising a step for detecting an ARP spoofing attack based on an ARP request packet generated for an ARP spoofing attack; a step for generating a plurality of counterfeit MAC addresses and dynamically changing MAC addresses of network devices or servers which are to be protected whenever an ARP spoofing attack is generated; and a step for neutralizing an ARP spoofing attack by using a counterfeit MAC address which is capable of neutralizing an ARP spoofing attack adequately.

Method for neutralizing the ARP spoofing attack by using counterfeit MAC addresses

The present invention is related to a technology for grasping the number of a plurality of terminals of a client using a Cookie in a private network in which plural terminals are shared by redirecting a session which is to be connected to a Web by analyzing a TCP/IP packet, detecting the accurate number of a plurality of terminals of a client using an Internet, and making the accurate number as a DB, and selectively permitting or blocking a connection to Internet according to TCP/IP by using the Cookie pool information of a DB type and JOB when the users configuring and using a private network connect to the Internet at the same time.

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Seoul, South Korea

Kyoung-Pil Kong