COIT20262 Assignment 1 Submission

COIT20262 Assignment 1 Submission Term 1, 2019
COIT20262 - Advanced Network Security, Term 1, 2019
Assignment 1 Submission
Due date: 5pm Friday 26 April 2019 (Week 6) ASSESSMENT
Weighting: 40%
1Length: N/A
Student Name: enter your name
Student ID: id
Campus: campus
Tutor: tutor
Advanced Network Security Page 1 of 7

COIT20262 Assignment 1 Submission Term 1, 2019
Question 1. Packet Capture and Analysis
Part (c) Message Sequence Chart
Advanced Network Security Page 2 of 7

COIT20262 Assignment 1 Submission Term 1, 2019
Part (d) Information from Packets
Information Answer
Time between <ENTER> on TCP 2.036 – 2.039
Packet numbers for question above 4 and 6
IP address and port of UDP client 192.168.2.21 Port 9015
MAC of UDP server 08:00:27:33:07:53
Hex value of timestamp 080a0000ee5d00000000
Hex value of checksum 0x0000f9ac
Part (e)
The risk of access of the message transferred between node 2 and node 1 by an external agent
can be eliminated by encapsulating the data packets with the RSA encryption algorithm and
asymmetric key encryption techniques. For reducing the risk of public key distribution digital
signature can also be used for management of the identity of the user.
Part (f)
The modification attack took place on the server cannot be determined by the server since the
identity of an authorized user is forged for gaining access of the server and the hacker
behaves as the authorised user to make the modification in the database. Cookie stealing
followed by SQL injection attack can be used such that the server is certain that message was
not modified.
Part (g)
On performing replay attack on the TCP exchange the attacker maliciously or frauds valid
data transmission. This is done by intercepting the data packets and retransmitting it and
acting as a masquerade attack. The replay attack is the lower version of man in the middle
attack and the server would be unaware of this type of attack if session ID is not tagged with
the components transmitted by the valid user.
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