Information security – Access control or authentication – Network
Reexamination Certificate
2005-12-08
2010-10-19
Kim, Jung (Department: 2432)
Information security
Access control or authentication
Network
C726S023000
Reexamination Certificate
active
07818786
ABSTRACT:
An apparatus and method for managing a session state are provided. The apparatus for managing a session state during transmission control protocol (TCP) handshaking includes: a session index unit producing and managing an index including 5-tuple information of a session corresponding to an input packet; a detailed information manager generating and managing an entry by extracting state information of a session in which a predetermined time does not pass after the session has been completely established, to respond to an intrusion detection against the input packet when the index is produced; a brief information manager generating and managing an entry including state information, which includes states of session connection and disconnection and directionality of the input packet, of a session in which a predetermined time elapses after the session has been completely established; and a search unit searching an index of the session corresponding to the input packet in the session index unit, and, if an index does not exist, searching the brief information manager after the session has been completely established.
REFERENCES:
patent: 7290283 (2007-10-01), Copeland, III
patent: 2004/0013112 (2004-01-01), Goldberg et al.
Brian Dyck; SANS: Malware FAQ: Checkpoint Firewall-1 ACK DOS Vulnerability and Sample Incident. A Collection articles written 1999-2001.
“Exploiting Stateful Inspection of Network Security in Reconfigurable Hardware,” Shaomeng Li et al. Field-Programmable Logic and Applications, vol. 2778/2003, pp. 1153-1157.
Jang Jong Soo
Oh Jin Tae
Yoon Seung Yong
Electronics and Telecommunications Research Institute
Kim Jung
Ladas & Parry LLP
Lemma Samson B
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