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COIS23001 Network Security Assessment
Question 1: Firewall Rule Design
The system’s administrator of Reliable Power Supplies (RPS), a medium sized company that builds UPSs and switched power supplies for the computing industry. Your task is the analysis, design and configuration of a Firewall System that secures the inbound and outbound traffic at RPS.
RPS Web server contains public information including a product catalogue that is accessible to Internet users and it also provides secure online purchasing functionality using SSL/TLS. The internal users are also allowed to access all RPS WWW services; however they are allowed to access Internet WWW and FTP services only via the proxy located on the first firewall via port 3028.
Question 2: PCAP Analysis
Peter is the Network Security Manager for a small spare parts business. The organization uses an e-sales application to provide a front-end for its e-sales business.
- Identify the anomaly in the traffic this organisation is going through. What sort of evidence do you have to make this claim?
- What sort of utility or tool do you think probably the “attacker” is using to conduct this attack?
- Provide the IP address of the host used by the perpetrator. Based on this information, what can you tell about the profile of this individual? Explain why.
- What Wireshark filter do you think Peter used to produce the given PCAP? Explain why?
Question 3: Attack and Defence Research
- Based on the information provided, what type of attack has been performed by the hackers using Kirandeep’s blog?
- How would James need to change the PHP script to prevent such attacks?
- What limitations does this form of attack have?
Hint: Would this attack only have to be performed once to generate thousands of spam emails?
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