Lab 1 CYSE 230

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School

Old Dominion University *

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Course

230

Subject

Computer Science

Date

Feb 20, 2024

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1

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Lab 1 CYSE 230 Question 1: What is the source port of the packet in question? This would be 20199 packet. Question 2: What is the destination port of the packet in question? This would be 1434 packet. Question 3: In Packet No. 28, what is the Source Port of the UDP data? (Hint: What does UDP stand for?) This would be 1707. Question 4: In Packet No. 5, what URL was queried for DNS information? The URL was google.com. DHCP Discover, DHCP Offer, DHCP Request, and DHCP ACK. Question 6: Out of the two transport protocols (TCP or UDP), which is used for DHCP? Why do you think this is? The DHCP uses UPD transport protocol because UDP is more efficient as transport. Question 7: What incoming server port does DHCP rely on to receive requests? (Hint: Look at the Packet Details Pane.) UDP 67 End of Lab Questions: Question 8: From our slammer.pcap file, what is the destination IP of the packet? The IP is 65.165.167.86 Question 9: What is DNS? Domain Name System converts domain names into IP addresses that are readable by humans. Question 10: What port does DNS listen on? It listens on TCP/UDP port 53. Question 11: Who is the DHCP Discover sent to? Who is the intended recipient? DHCP Discover is sent to a DHCO server, the recipient is the client .
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