Advanced Network Security Assignment 2022

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: 12085235
Campus: campus
Tutor: tutor
Advanced Network Security Page 1 of 9

COIT20262 Assignment 1 Submission Term 2, 2019
Question 1. Packet Capture and Analysis
Part (d) Message Sequence Chart
Advanced Network Security Page 2 of 9

COIT20262 Assignment 1 Submission Term 2, 2019
Part (e) Information from netcat Packets
Information Answer
Client port 8235
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)
Netcat and SCP are useful tools that are mostly used on the Linux and Mac operating systems
to monitor UDP and TCP connections between a server and a client or any connection within
the network. Netcat performs the function of reading, writing, encryption, and redirection of
network traffic across networks (Cole, 2011). SCP’s specific role is to copy files between
hosts and servers without the need for establishing an FTP session. It is built on a secure shell
protocol, meaning that it requires authentication by a passphrase and key (Cole, 2011). The
CIA triad underscores the need for confidentiality, integrity, and availability in a network
service. Confidentiality is marked by the ability of a computer system to keep the information
out of access to unauthorised persons. Integrity dictates that information should remain in its
Advanced Network Security Page 3 of 9
TCP Data
ACK 2
ACK 1, TCP Handshake – syn2
TCP Handshake – syn1
Client
192.168.2.2
8235
Server
192.168.1.11
8235