CIS410_Malicious_Traffic_Analysis - Eric Walker Mr...

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Eric Walker Mr. Trevethan CIS410 July 28, 2011 "Malicious Traffic Analysis" In this exercise we will examine some "malicious" network traffic (i.e. traffic that is on the network from sources that are trying to break in or collect information). The purpose of the exercise it to gain further experience using WireShark and recognizing malicious network traffic Lab Setup You will need a computer running WireShark. Task 1: Analyze a tcp portscan attempt Open the portscan.cap how long does the attack last? 0.758130 of a sec. What is the attackers IP address? how many source ports are used by the attacker? 24 how many destination ports are targeted by the attacker? 24 Why does the target send back so many RST,ACK packets? Because the ports are closed. how can the attacker tell if a port is "open"? (hint, look at frames 13, 14 & 15). We can see that the three way handshake was performed; because the attacker sent out a SYN request and was returned a SYN, ACK, by the target device, and the attacker returned
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This note was uploaded on 09/09/2011 for the course CIS CIS410 taught by Professor Mr.t during the Spring '11 term at ECPI College of Technology.

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CIS410_Malicious_Traffic_Analysis - Eric Walker Mr...

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