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    • 3. 发明授权
    • Method and apparatus for storing intrusion rule
    • 存储入侵规则的方法和装置
    • US07735137B2
    • 2010-06-08
    • US11484257
    • 2006-07-10
    • Kwang Ho BaikByoung Koo KimJin Tae OhJong Soo JangSung Won Sohn
    • Kwang Ho BaikByoung Koo KimJin Tae OhJong Soo JangSung Won Sohn
    • G06F11/00G06F12/14G06F12/16G08B23/00
    • H04L63/1416
    • A method and apparatus for storing an intrusion rule are provided. The method stores a new intrusion rule in an intrusion detection system having already stored intrusion rules, and includes: generating combinations of divisions capable of dividing the new intrusion rule into a plurality of partial intrusion rules; calculating the frequency of hash value collisions between each of the generated division combinations and the already stored intrusion rules; dividing the new intrusion rule according to the division combination which has the lowest calculated frequency of hash value collisions; and storing the divided new intrusion rule in a corresponding position of the intrusion detection system. According to the method and apparatus, the size of the storage unit occupied by the intrusion rule can be reduced, and by performing pattern matching, the performance of the intrusion detection system can be enhanced.
    • 提供了一种用于存储入侵规则的方法和装置。 该方法在已经存储了入侵规则的入侵检测系统中存储新的入侵规则,并且包括:生成能够将新的入侵规则划分成多个部分入侵规则的分割组合; 计算每个生成的分割组合与已经存储的入侵规则之间的散列值冲突的频率; 根据哈希值碰撞计算频率最低的划分组合划分新的入侵规则; 并将分割的新入侵规则存储在入侵检测系统的相应位置。 根据该方法和装置,可以减少入侵规则占用的存储单元的大小,通过执行模式匹配,能够提高入侵检测系统的性能。
    • 4. 发明授权
    • Method of storing pattern matching policy and method of controlling alert message
    • 存储模式匹配策略的方法和控制报警信息的方法
    • US07735128B2
    • 2010-06-08
    • US11635245
    • 2006-12-07
    • Byoung Koo KimKwang Ho BaikJin Tae OhJong Soo JangSung Won Sohn
    • Byoung Koo KimKwang Ho BaikJin Tae OhJong Soo JangSung Won Sohn
    • G06F9/00G06F7/04H04L9/00
    • H04L12/5602
    • A method of storing a pattern matching policy and a method of controlling an alert message are provided. The method includes (a) generating a content structure as a sub-structure of a header combination structure of a stored traffic pattern which is a policy to be newly applied to a pattern matching apparatus; (b) determining whether a content of the stored traffic pattern is identical to a content of an original traffic pattern stored in advance in the pattern matching apparatus; (c) allocating a content index of the content of the original traffic pattern to the content of the stored traffic pattern if the content of the stored traffic pattern is identical to the content of the original traffic pattern; and (d) determining whether a header combination structure of the original traffic pattern comprises only one content structure or more than one content structure and allocating a header index of the header combination structure of the stored traffic pattern to the header combination structure of the original traffic pattern if the header combination structure of the original traffic pattern is found to comprise only one content structure. Accordingly, it is possible to efficiently use hardware memories with limited storage capacities and effectively perform a pattern matching function.
    • 提供了一种存储模式匹配策略的方法和一种控制警报消息的方法。 该方法包括:(a)生成内容结构作为作为新应用于模式匹配装置的策略的存储的流量模式的头部组合结构的子结构; (b)确定存储的业务模式的内容是否与预先存储在模式匹配装置中的原始业务模式的内容相同; (c)如果存储的业务模式的内容与原始业务模式的内容相同,则将原始业务模式的内容的内容索引分配给所存储的业务模式的内容; 和(d)确定原始业务模式的报头组合结构是否仅包含一个内容结构或多于一个内容结构,并且将所存储的业务模式的报头组合结构的报头索引分配给原始业务的报头组合结构 如果发现原始流量模式的头组合结构仅包含一个内容结构,则模式。 因此,可以有效地使用具有有限存储容量的硬件存储器并且有效地执行模式匹配功能。
    • 10. 发明授权
    • Apparatus and method of detecting network attack situation
    • 检测网络攻击情况的方法及装置
    • US07596810B2
    • 2009-09-29
    • US11081682
    • 2005-03-17
    • Jin Oh KimSeon Gyoung SohnHyochan BangSoo Hyung LeeDongyoung KimBeom Hwan ChangGeon Lyang KimHyun Joo KimJung Chan NaJong Soo JangSung Won Sohn
    • Jin Oh KimSeon Gyoung SohnHyochan BangSoo Hyung LeeDongyoung KimBeom Hwan ChangGeon Lyang KimHyun Joo KimJung Chan NaJong Soo JangSung Won Sohn
    • G08B23/00G06F15/173
    • H04L63/1416G06F21/552G06F21/85H04L63/1441
    • Provided is an apparatus for detecting a network attack situation. The apparatus includes an alarm receiver receiving a plurality of alarms raised in a network to which the alarm receiver is connected, converting the alarms into predetermined alarm data, and outputting the alarm data; an alarm processor analyzing an attack situation in the network based on attributes of the alarm data and a number of times that the alarm data is generated; a memory storing basic data needed to analyze the state of the network and providing the basic data to the alarm processor; and an interface transmitting the result of the analysis by the alarm processor to an external device, receiving a predetermined critical value from the external device, which is a basis for determining the occurrence of the attack situation, and outputting the critical value to the alarm processor such that the alarm processor can store the critical value in the memory. Equal numbers of hash engines and detection engines for processing the alarms in the network to the number of data groups classified as network attack situations are formed in a line. Therefore, a network attack situation can be detected in real time based on a great number of alarms indicating intrusion detection.
    • 提供了一种用于检测网络攻击情况的装置。 该装置包括接收在连接有报警接收器的网络中升起的多个报警的报警接收机,将报警转换成预定报警数据,并输出报警数据; 报警处理器根据报警数据的属性和产生报警数据的次数分析网络中的攻击情况; 存储器,用于存储分析网络状态并将基本数据提供给报警处理器所需的基本数据; 以及将所述报警处理器的分析结果发送到外部设备的接口,从外部设备接收预定的临界值,所述临时值是用于确定所述攻击情况的发生的基础,并且将所述临界值输出到所述报警处理器 使得报警处理器可以将临界值存储在存储器中。 在网络中形成等同数量的散列引擎和检测引擎,用于将网络中的警报处理为分类为网络攻击情况的数据组的数量。 因此,可以基于大量表示入侵检测的告警来实时检测网络攻击情况。