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❆ ▲✐♥✉① ❑❡r♥❡❧ ❆✉❞✐t✐♥❣ ❚♦♦❧ ❢♦r ❍♦st✲❇❛s❡❞ ■♥tr✉s✐♦♥ ❉❡t❡❝t✐♦♥ ❲✐❧❧✐❛♠ ❆✳ ▼❛♥✐❛tt②✱ ❆❞♥❛♥ ❇❛②❦❛❧✱ ❱✐❦❛s ❆❣❣❛r✇❛❧✱ ❏♦s❤✉❛ ❇r♦♦❦s✱ ❆❧❡❦s❛♥❞r ❑r②♠❡r ❛♥❞ ❙❛♠✉❡❧ ▼❛✉r❛ ❜❛②❦❛❧❅❝s✳❛❧❜❛♥②✳❡❞✉ CSI 424/524, William A. Maniatty, Dept. of Computer Science, University at Albany 1

❖✈❡r✈✐❡✇ ❙❡❝✉r✐t② ♠❛♥❛❣❡♠❡♥t ❛♣♣r♦❛❝❤❡s • Pr❡✈❡♥t✐♦♥ ✲ s❧♦✇s ❞♦✇♥ ❛tt❛❝❦❡rs • ❉❡t❡❝t✐♦♥ ✲ ❛❧❡rt ❛❞♠✐♥✐str❛t♦rs ✇❤❡♥ ❛tt❛❝❦s ♦❝❝✉r • ❈♦♥t❛✐♥♠❡♥t ✲ ❧✐♠✐t ❞❛♠❛❣❡ ♦❢ ❛ s✉❝❝❡ss❢✉❧ ❛tt❛❝❦ • ❘❡❝♦✈❡r② ✲ r❡♣❛✐r ✭✐❢ ❢❡❛s✐❜❧❡✮ t❤❡ ❞❛♠❛❣❡ ❲❤❡r❡ t♦ ❛♣♣❧② t❤❡s❡ ❛♣♣r♦❛❝❤❡s • ❍♦st ❜❛s❡❞ • ◆❡t✇♦r❦ ❜❛s❡❞ ❖✉r ❢♦❝✉s ♦♥ ❤♦st✲❜❛s❡❞ ✐♥tr✉s✐♦♥ ❞❡t❡❝t✐♦♥✳ • ❲❡ ♥❡❡❞❡❞ t♦ ❣❡♥❡r❛t❡ ❧❛r❣❡r ❛♠♦✉♥ts ♦❢ ❤✐❣❤ q✉❛❧✐t② ❛✉❞✐t ❞❛t❛ • ❚❤✐s ✐s ❛ ❧♦t ❧✐❦❡ ❞❡❜✉❣❣✐♥❣✱ s♦ ❡①t❡♥❞ ❛ ❞❡❜✉❣❣✐♥❣ t♦♦❧ ⊲ ❲❡ ❝❤♦s❡ ❨❛❣❤♠♦✉r ❛♥❞ ❉❡❣❛♥❛✐s✬ ▲✐♥① ❚r❛❝❡ ❚♦♦❧❦✐t ✭▲❚❚✮ ❬✼❪✮ ⊲ ◆❡❡❞ t♦ ♦❜s❡r✈❡ ❛❧❧ s②st❡♠ ❝❛❧❧s ⊲ ◆❡❡❞ t♦ ♠♦♥✐t♦r ❛❧❧ s❡❝✉r✐t② ❝r❡❞❡♥t✐❛❧s ♦❢ ♣r♦❝❡ss❡s CSI 424/524, William A. Maniatty, Dept. of Computer Science, University at Albany 2

■♥str✉♠❡♥t❛t✐♦♥ ❉❡s✐❣♥ ❈❤♦✐❝❡s ❲❡ ✐♥str✉♠❡♥t❡❞ ❡❛❝❤ s②st❡♠ ❝❛❧❧✳ ❲❡ ❞✐❞ ◆❖❚ ✉s❡ ✇r❛♣♣❡r ❢✉♥❝t✐♦♥s ❢♦r s②st❡♠s ❝❛❧❧s • ▼❛♥② t♦♦❧s ❞♦ t❤✐s ✭❡❛s② t♦ ❝♦❞❡✱ ❡✳❣✳ s②str❛❝❡ ❬✹❪✮✳ • ❇✉t t❡♥❞s t♦ ❝❛✉s❡ ❝♦♥✢✐❝ts ✇❤❡♥ ✉s✐♥❣ ♠♦r❡ t❤❛♥ ♦♥❡ ♦❢ t❤❡s❡ t♦♦❧s✳ ❯s❡❞ ❝♦♥❞✐t✐♦♥❛❧ ❝♦♠♣✐❧❛t✐♦♥ ❛♥❞ ✐♥❧✐♥✐♥❣ t♦ ♠✐♥✐♠✐③❡ ♦✈❡r❤❡❛❞ ❍❛s ❯s❡❢✉❧ ❘❡❧❛t❡❞ Pr♦❥❡❝ts✴❋❡❛t✉r❡s • ❘❡❧❛②❋❙ ❬✻❪ ✭✇❡ ✉s❡ t❤✐s✮ • ❋❧✐❣❤t ❘❡❝♦r❞❡r • ❉Pr♦❜❡s ❬✸❪ • ❑❡r♥❡❧ ❍♦♦❦s ❬✷❪ ❆❧❧♦✇s ❢♦r ♥❛t✐✈❡ ♠♦❞❡ tr❛❝✐♥❣ • ❆❧❧♦✇s ❢♦r tr❛❝✐♥❣ ♦♥ ❙▼P s②st❡♠s ✭✉♥❧✐❦❡ ❘❡❱✐rt ❬✺❪✮ • ❊✈❡♥t✉❛❧❧②✱ ✇❡ ✇❛♥t ♦♣t✐♦♥❛❧ s✉♣♣♦rt ❢♦r ✈✐rt✉❛❧✐③❛t✐♦♥ ❛♥❞ r❡♣❧❛②✳ • ❚❤✉s✱ ✇❡ ❛r❡ ❝♦♥s✐❞❡r✐♥❣ ❳❡♥ ❬✶❪✳ CSI 424/524, William A. Maniatty, Dept. of Computer Science, University at Albany 3

❆r❝❤✐t❡❝t✉r❡ ❯s❡❞ Off Line Post Processing Trace Daemon Kernel Streaming Data Analyzer Trace Buffers (PE 0) User Buffers (CPU 0) Log File Trace Visualizer CPU 0 ... ... Trace Buffers (PE N−1) User Buffers (CPU N−1) System Calls Log File CPU N−1 ... ... Trace Log Logic Analyzer Configuration and Proc Log Buffer Control Process /proc Tree file system Capture Rules Database CSI 424/524, William A. Maniatty, Dept. of Computer Science, University at Albany 4

❉❛t❛ ▼❛♥❛❣❡♠❡♥t ✐ss✉❡s ❲❡ ❣❡t ❛ ❧♦t ♦❢ ❞❛t❛ • ❚r❛❝✐♥❣ ❛❧❧ s②st❡♠ ❝❛❧❧s ♦♥ ❛ ❧✐❣❤t❧② ❧♦❛❞❡❞ s②st❡♠ ❣✐✈❡s ❛❜♦✉t ✹✵ ●❇✴✷✹ ❤♦✉rs✳ • ❲❡ ✉s❡ ✐♥❧✐♥❡ ❝♦♠♣r❡ss✐♦♥ ✭③❧✐❜✮✱ ❛♥❞ ❣❡t ❛r♦✉♥❞ ✾✺ ✪ s✐③❡ r❡❞✉❝t✐♦♥ • ❖❜s❡r✈❡❞ r✉♥✲t✐♠❡ s❧♦✇❞♦✇♥ ♦❢ ♦♥❧② ✸✲✺✪ ♦♥ ■✴❖ ✐♥t❡♥s✐✈❡ t❛s❦s✳ ❙✉♣♣♦rt ♠✐s✉s❡ ❞❡t❡❝t✐♦♥ ✭❡✳❣✳ ♣r✐✈✐❧❡❣❡ ❡s❝❛❧❛t✐♦♥✮ ❲❡ ❛r❡ ❧♦♦❦✐♥❣ ✐♥t♦ ♠✐♥✐♥❣ t❡❝❤♥✐q✉❡s ❢♦r ♦✉r ❞❛t❛ • ❚✐♠❡ s❡r✐❡s ❜❛s❡❞ ✭❝✉rr❡♥t❧② ✇❡ ❛r❡ tr②✐♥❣ ✇❛✈❡❧❡t ❜❛s❡❞ ❛♣♣r♦❛❝❤❡s✮✳ • ❙❡q✉❡♥❝❡ ❜❛s❡❞✳ • ❈❧✉st❡r✐♥❣ ❛♥❞ ❝❧❛ss✐✜❝❛t✐♦♥ ✭♣r✐♥❝✐♣❧❡ ❝♦♠♣♦♥❡♥t ❛♥❛❧②s✐s✮✳ ❈❤❛❧❧❡♥❣❡s ♦❢ ♠✐♥✐♥❣ • ❚❤❡ ❞❛t❛ ✐s ❤✐❣❤❧② ❞✐♠❡♥s✐♦♥❛❧ ❛♥❞ ❝❛t❡❣♦r✐❝❛❧ • ❚❤✐s ♠❛❦❡s ❝❧✉st❡r✐♥❣ ❤❛r❞✳ • ❯s❡ r❡❧❛t✐♦♥❛❧ ❉❇ ✭P♦s❣r❡❙◗▲✮ t♦ ♠❛♥❛❣❡ ❛ ❝♦♥❞❡♥s❡❞ ❞❛t❛ r❡♣r❡s❡♥t❛t✐♦♥ • ◆❡❡❞ str❡❛♠✐♥❣ ❛♣♣r♦❛❝❤❡s ✭✜rst ❣❡t ❣♦♦❞ ❛❝❝✉r❛❝②✱ t❤❡♥ str❡❛♠✮✳ CSI 424/524, William A. Maniatty, Dept. of Computer Science, University at Albany 5

■♥str✉♠❡♥t❛t✐♦♥ ❞❡t❛✐❧s ❆ ❣♦♦❞ ❛✉❞✐t ❝❛♥ ❧♦❣ ❛❧❧ ✐♥♣✉ts ❛♥❞ r❡s✉❧ts ♦❢ s②st❡♠ ❝❛❧❧s✳ • ■♥❝❧✉❞✐♥❣ ❙❡❝✉r✐t② ❝r❡❞❡♥t✐❛❧s ✉✐❞❴t ✉✐❞ ✱ ❡✉✐❞ ✱ s✉✐❞ ✱ ❢s✉✐❞ ❀ ❣✐❞❴t ❣✐❞ ✱ ❡❣✐❞ ✱ s❣✐❞ ✱ ❢ s ❣ ✐ ❞ ❀ ✐♥t ♥❣r♦✉♣s ❀ ❣✐❞❴t ❣r♦✉♣s ❬◆●❘❖❯P❙❪ ❀ ❦❡r♥❡❧❴❝❛♣❴t ❝❛♣❴❡❢❢❡❝t✐✈❡ ✱ ❝❛♣❴✐♥❤❡r✐t❛❜❧❡ ✱ ❝❛♣❴♣❡r♠✐tt❡❞ ❀ ✐♥t ❦❡❡♣❴❝❛♣❛❜✐❧✐t✐❡s ✿ ✶ ❀ str✉❝t ✉s❡r❴str✉❝t ∗ ✉s❡r ❀ ✴ ∗ ❖t❤❡r ✉s❡❢✉❧ s❡❝✉r✐t② r❡❧❛t❡❞ ❢ ✐ ❡ ❧ ❞ s ∗ ✴ ✐♥t ❞✐❞❴❡①❡❝ ✿ ✶ ❀ ✈♦✐❞ ∗ s❡❝✉r✐t② ❀ CSI 424/524, William A. Maniatty, Dept. of Computer Science, University at Albany 6

❈♦♥❝❧✉❞✐♥❣ ❘❡♠❛r❦s • P♦❧✐❝② ✐♥str✉♠❡♥t❛t✐♦♥ ♥❡❡❞s ❞✐✛❡r❡♥t ❢r♦♠ ❛✉❞✐t✐♥❣ ⊲ ❊✳❣✳ ▲✐♥✉① ❙❡❝✉r✐t② ▼♦❞✉❧❡s ❤❛s ✉s❡r ❡①✐t st②❧❡ ♣r♦❣r❛♠♠✐♥❣ ❛♥❞ ❧❦♠s✳ ⊲ ❍♦♦❦s ♣❧❛❝❡❞ ❜❡❢♦r❡ ♠❛❥♦r ❝❤❛♥❣❡s t♦ ❦❡r♥❡❧ st❛t❡ ✭❞♦❡s ♥♦t r❡❝♦r❞ r❡s✉❧ts✮✳ ⊲ ❙♦♠❡t✐♠❡s ♥♦t ✐♥✈♦❦❡❞ ✭✐✳❡✳ ✐❢ ♣❛r❛♠❡t❡rs ❢❛✐❧ s❛♥✐t② ❝❤❡❝❦s✮✳ ⊲ ❖♥❧② ✏s❡❝✉r✐t② r❡❧❛t❡❞✑ ❝❛❧❧s ❤❛✈❡ ✐♥str✉♠❡♥t❛t✐♦♥ s♦ ❡①♣❧♦✐t❛❜❧❡ ❝❛❧❧s ✭❡✳❣✳ ♠♠❛♣✮ ♠❛② ❧❛❝❦ ❤♦♦❦s ⊲ ❲❡ ❛r❡ ✐♥✈❡st✐❣❛t✐♥❣ ❝♦♠❜✐♥✐♥❣ ▲❙▼ ✭♣♦❧✐❝②✮ ❛♥❞ ▲❚❚ ✭❛✉❞✐t✮ • ❱✐rt✉❛❧ ▼❛❝❤✐♥❡s ♣r♦✈✐❞❡ ❝♦♥t❛✐♥♠❡♥t ❛♥❞ t❛♠♣❡r r❡s✐st❛♥❝❡ ⊲ ❇✉t ♠❛♥② ✉s❡rs r✉♥ ♥❛t✐✈❡ ♠♦❞❡✱ ❛♥❞ ♥❡❡❞ ❧♦❣❣✐♥❣ ⊲ ■❞❡❛❧❧② ❛ ✉s❡❢✉❧ t♦♦❧ s❤♦✉❧❞ ✇♦r❦ ✐♥ ❇❖❚❍ ✈✐rt✉❛❧ ❛♥❞ ♥❛t✐✈❡ ♠♦❞❡ • ❖✛❡rs str♦♥❣ ♠✐s✉s❡ ❞❡t❡❝t✐♦♥ ❛♥❞ r❡s♣♦♥s❡ ⊲ ❍✐❣❤❧② ❞❡t❛✐❧❡❞ ✢✐❣❤t r❡❝♦r❞❡r ❞✉♠♣s • ❈❧♦s❡ ❝♦✉♣❧✐♥❣ ♦❢ ♠✐♥✐♥❣ ❛♥❞ ❛❝q✉✐s✐t✐♦♥ ❧♦♦❦s ♣r♦♠✐s✐♥❣ ⊲ ❇❡❣✐♥ ✇✐t❤ tr❛❞✐t✐♦♥❛❧ ❝❧✉st❡r✐♥❣✱ t✐♠❡ s❡r✐❡s ❛♥❞ s❡q✉❡♥❝❡ ♠✐♥✐♥❣ ⊲ ❚❤❡♥ ♣✐❝❦ str❡❛♠✐♥❣ ❛♣♣r♦❛❝❤❡s ❢♦r ✐♠♣r♦✈❡❞ ❛❝❝✉r❛❝② • ❘❡s♣♦♥s❡s ❛♥❞ ♣♦❧✐❝② ✐♥t❡❣r❛t✐♦♥ ❛ ✇♦r❦ ✐♥ ♣r♦❣r❡ss CSI 424/524, William A. Maniatty, Dept. of Computer Science, University at Albany 7