COIT20262 | Advanced Network Security

COIT20262 Assignment 1 Submission Term 2, 2019
COIT20262 - Advanced Network Security, Term 2, 2019
Assignment 1 Submission
Due date: 10am Monday 26 August 2019
(Week 6)
ASSESSMENT
Weighting: 40%
1Length: N/A
Student Name: enter your name
Student ID: 12078486
Campus: campus
Tutor: tutor
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COIT20262 Assignment 1 Submission Term 2, 2019
Question 1. Packet Capture and Analysis
Part (d) Message Sequence Chart
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TCP Handshake – syn1
Client
192.168.2.21
8486
Server
192.168.1.11
8486
ACK 1, TCP Handshake – syn2
ACK 2
TCP Data

COIT20262 Assignment 1 Submission Term 2, 2019
Part (e) Information from netcat Packets
Information Answer
Client port 8486
TCP connection duration 1440 microseconds
Absolute sequence number 4542342297
Payload length 28
Hex value of timestamp 00:00:00.001446
Hex value of checksum 0xb5a1
Binary value of flags 11101
Part (f) Information from scp Packets
Information Answer
Server port 22
OpenSSH version 2.0
SSH name of key exchange CBC
Key exchange protocol/scheme BSD RCP
Last 4 hex digits of public key xpXz
Number of encrypted packets 10
Last 4 hex digits of MAC 3a:7c
Part (g)
SCP and netcat have been used in the phase 3 and 4 as tools to inspect the flow of packets
through the topology 5 network between the server and the host. The exchange of
information on a network takes place in form of packets and is conducted through either the
TCP or UDP protocols. The inspection tools, scp and netcat may be used to monitor, modify,
and define the network’s characteristics such as the port numbers and types of connections
established among others (Cole, 2011). There are key differences that distinguish the two
tools from each other. For instance, netcat allows a user to gain full rights to a remote system
while scp only permits the copying of files. It operates alongside the secure shell, which
works has a super user role. As a result, the connection of two computer systems using the
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