netw 240 week 7

Topics: IP address, IPv4, Transmission Control Protocol Pages: 6 (330 words) Published: February 14, 2015
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NETW240 Week 7 Linux Wireshark Lab Report

Use the ifconfig command to verify your IP Address and Subnet Mask. Make a note of the interface (eth0 or eth1). Use the route command to determine the Default Gateway. Record this information in the table below:

IP Address
Subnet Mask
Default Gateway
10.254.104.100
255.255.255.0
10.254.102.1

Select an ARP frame labeled “Who has ##.##.##.##? where ##.##.##.## is the default gateway address recorded on page 1. Make the Ethereal Application window Full Screen if it isn’t already full screen.

From the information in your captured frame, answer the following question:

What is the MAC (Physical) address of the Host requesting the MAC address of the default gateway (router)? 00:0c:29:5c:b8:ee

Select an ARP reply that contains the label “##.##.##.## is at xx:xx:xx:xx:xx:xx, where ##.##.##.## is the default gateway IP address.

From the information contained in the ARP Reply,
write down the MAC address of the Default Gateway
00:0c:29:60:e4:c7

Expand the details of a DHCP ACK frame and answer the following questions.
DHCP Client UDP Port #
67
DHCP Server UDP Port #
68
Client IP Address
10.254.104.100
DHCP Server IP Address
10.254.104.1
Router IP Address
10.254.104.1
DNS Sever IP Address
10.254.104.1
DHCP Lease Time
30 Seconds

Capture the HTTP frame. Answer all of the questions found below based on the details of your captured HTTP frame.

What is the MAC Address of the Default Gateway?

00:0c:29:5c:b8:ee
What Field in the IP header determines the Transport
Layer protocol that handles the contents of the Packet?
Protocol
What is the Window Size indicated for the segment?

37376 (scaled)
What is the Sequence Number for the segment?

983
What is the Acknowledgement Number for the segment?

13982
What Field in the TCP header contains a well known port number that maps to the Application that will handle the segment Data Stream? Destination port
ARP REQUEST PACKET CAPTURE

ARP REPLY PACKET CAPTURE

DHCP ACKNOWLEDGE PACKET CAPTURE

HTTP PACKET CAPTURE
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