Methods and systems for using state ranges for processing regular expressions in intrusion-prevention systems
Methods and systems are provided for using state ranges for processing regular expressions in intrusion-prevention systems. In an embodiment, in an intrusion-prevention system for examining network traffic and identifying therein the presence of signature data patterns, a state-transition table is p...
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creator | Preston, Jason D |
description | Methods and systems are provided for using state ranges for processing regular expressions in intrusion-prevention systems. In an embodiment, in an intrusion-prevention system for examining network traffic and identifying therein the presence of signature data patterns, a state-transition table is provided. The state-transition table is representative of a predetermined data pattern, and includes states each having one or more egress events defining transitions to other states. A subject is received for evaluation for the presence of the predetermined data pattern. While using the state-transition table for said evaluation, the presence of a first egress event of a first state is detected in the subject, resulting in a transition from the first state to a second state. A second-state range in the subject is calculated, and the second-state range is searched for the presence of at least one of the second state's egress events. |
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fullrecord | <record><control><sourceid>uspatents_EFH</sourceid><recordid>TN_cdi_uspatents_grants_08024802</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>08024802</sourcerecordid><originalsourceid>FETCH-uspatents_grants_080248023</originalsourceid><addsrcrecordid>eNqNjU0KwkAMhWfjQtQ75AKFoi7ci8WNO_cSbDoW2syQZERvb-rPXkh4yZdH3jyMJ7JbahWQW9CnGo0KXRIo2nMENTQCQY70wVnSlfR9E4plQAF6ZJlQYoWevUzKtFWO78Tm4-_zMsw6HJRWX10EaA7n_bEqmj2ITS_Rw1zqXb3eem_-sLwAwv1EiQ</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>Methods and systems for using state ranges for processing regular expressions in intrusion-prevention systems</title><source>USPTO Issued Patents</source><creator>Preston, Jason D</creator><creatorcontrib>Preston, Jason D ; Hewlett-Packard Development Company, L.P</creatorcontrib><description>Methods and systems are provided for using state ranges for processing regular expressions in intrusion-prevention systems. In an embodiment, in an intrusion-prevention system for examining network traffic and identifying therein the presence of signature data patterns, a state-transition table is provided. The state-transition table is representative of a predetermined data pattern, and includes states each having one or more egress events defining transitions to other states. A subject is received for evaluation for the presence of the predetermined data pattern. While using the state-transition table for said evaluation, the presence of a first egress event of a first state is detected in the subject, resulting in a transition from the first state to a second state. A second-state range in the subject is calculated, and the second-state range is searched for the presence of at least one of the second state's egress events.</description><language>eng</language><creationdate>2011</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/8024802$$EPDF$$P50$$Guspatents$$Hfree_for_read</linktopdf><link.rule.ids>230,308,776,798,881,64012</link.rule.ids><linktorsrc>$$Uhttps://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/8024802$$EView_record_in_USPTO$$FView_record_in_$$GUSPTO$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Preston, Jason D</creatorcontrib><creatorcontrib>Hewlett-Packard Development Company, L.P</creatorcontrib><title>Methods and systems for using state ranges for processing regular expressions in intrusion-prevention systems</title><description>Methods and systems are provided for using state ranges for processing regular expressions in intrusion-prevention systems. In an embodiment, in an intrusion-prevention system for examining network traffic and identifying therein the presence of signature data patterns, a state-transition table is provided. The state-transition table is representative of a predetermined data pattern, and includes states each having one or more egress events defining transitions to other states. A subject is received for evaluation for the presence of the predetermined data pattern. While using the state-transition table for said evaluation, the presence of a first egress event of a first state is detected in the subject, resulting in a transition from the first state to a second state. A second-state range in the subject is calculated, and the second-state range is searched for the presence of at least one of the second state's egress events.</description><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2011</creationdate><recordtype>patent</recordtype><sourceid>EFH</sourceid><recordid>eNqNjU0KwkAMhWfjQtQ75AKFoi7ci8WNO_cSbDoW2syQZERvb-rPXkh4yZdH3jyMJ7JbahWQW9CnGo0KXRIo2nMENTQCQY70wVnSlfR9E4plQAF6ZJlQYoWevUzKtFWO78Tm4-_zMsw6HJRWX10EaA7n_bEqmj2ITS_Rw1zqXb3eem_-sLwAwv1EiQ</recordid><startdate>20110920</startdate><enddate>20110920</enddate><creator>Preston, Jason D</creator><scope>EFH</scope></search><sort><creationdate>20110920</creationdate><title>Methods and systems for using state ranges for processing regular expressions in intrusion-prevention systems</title><author>Preston, Jason D</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-uspatents_grants_080248023</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2011</creationdate><toplevel>online_resources</toplevel><creatorcontrib>Preston, Jason D</creatorcontrib><creatorcontrib>Hewlett-Packard Development Company, L.P</creatorcontrib><collection>USPTO Issued Patents</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Preston, Jason D</au><aucorp>Hewlett-Packard Development Company, L.P</aucorp><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Methods and systems for using state ranges for processing regular expressions in intrusion-prevention systems</title><date>2011-09-20</date><risdate>2011</risdate><abstract>Methods and systems are provided for using state ranges for processing regular expressions in intrusion-prevention systems. In an embodiment, in an intrusion-prevention system for examining network traffic and identifying therein the presence of signature data patterns, a state-transition table is provided. The state-transition table is representative of a predetermined data pattern, and includes states each having one or more egress events defining transitions to other states. A subject is received for evaluation for the presence of the predetermined data pattern. While using the state-transition table for said evaluation, the presence of a first egress event of a first state is detected in the subject, resulting in a transition from the first state to a second state. A second-state range in the subject is calculated, and the second-state range is searched for the presence of at least one of the second state's egress events.</abstract><oa>free_for_read</oa></addata></record> |
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title | Methods and systems for using state ranges for processing regular expressions in intrusion-prevention systems |
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