please find the attached document.
Description of the initial setup and requirements The IT team of Acme Inc. startup company has designed a network infrastructure for the company as depicted on Diagram 1. Your role as Security Architecture team is to provide detailed security architecture requirements that will protect the sensitive internal infrastructure, as well as the access to the company’s public resources in the DMZ. For this purpose, you have a Linux-based gateway (with full Netfilter kernel support) with three ethernet interfaces. The network infrastructure has the following details: Linux Gateway with three ethernet interfaces: eth0: 192.168.0.1 (attached to the internal LAN:192.168.0.0/24); eth1: 192.168.10.1 (attached to the DMZ segment: 192.168.10.0/24) and eth2:3.3.3.3 (attached to the ISP provider network with default GW: 3.3.3.1). Web Server: 192.168.10.2, running Apache on ports 80 and 443. Mail server:192.168.10.3, listening on TCP/25. DNS server: 192.168.10.4, listening on UDP/53. Internal HTTP Caching Proxy: 192.168.0.2, listening on TCP/8080. Internal workstations: 192.168.0.3-254. The Security Architecture team needs to provide the security requirements for the firewall, based on Linux Netfilter, i.e. the detailed policies and rules that should secure the environment and provide least privilege access to all company resources, at the same time fulfilling the functional requirements. 2 Please define the best security strategy and iptables implementation, following these functional requirements: External entities on the internet need to access the company HTTP and HTTPS pages, as well as to be able to query company’s pubic DNS server and be able to send email to the public email server. Due to the capacity limitations of the ISP pipeline and also the security policy, which requires content filtering in place for that access, the company wants to utilize the caching and content filtering services of the HTTP proxy they have. Due to the variety and dynamic nature of internal clients, the proxy needs to be transparent. The company has only one system administrator for managing the servers in the DMZ. Their admin workstation has IP:192.168.0.20. The sysadmin tools to manage the servers in the DMZ are SSH client and SNMP monitoring application. Due to the specific job responsibilities of the system administrator, they are allowed to access the internet directly as the only exception from the transparent proxy policy. Web Server 192.168.10.2 Mail Server 192.168.10.3 DNS Server 192.168.10.4 HTTP Cache 192.168.0.2 Internet Internal Clients 192.168.0.3-254 Interface eth1: 192.168.10.1 netmask 255.255.255.0 Interface eth0: 192.168.0.1 netmask 255.255.255.0 Interface eth2: 3.3.3.3 Default gateway: 3.3.3.1 Sysadmin Workstation 192.168.0.20 Diagram 1. Detailed Network Infrastructure of Acme Inc. 3 Term Project Report Guidelines Each term project will result in a detailed written report, signed by each member of the group to certify their participation and understanding. Only members who actively participated in the work should sign the report. The report must include the meeting minutes as an appendix. The meeting minutes should document clearly which team members were responsible for which tasks. The deadline for submitting the final report in soft copy is stated in the assignment’s due dates. The report should be organized as you would organize a paper. It should be written in IEEE Proceedings Manuscripts style: two columns, single-spaced. You may find a template file at URL: http://www.ieee.org/web/publications/authors/transjnl/index.htm1. The entire report should be no more than six pages, including all figures, equations, references, tables, and text (but excluding the meeting minutes). Please use the standard 8 ½ by 11 paper. The project report should be neat, readable, and self-contained. Any class member should be able to understand the report, and benefit from the results you obtain. Therefore, you should include adequate references and background materials. Also, using figures, diagrams, tables may be a better way to enhance the readers’ comprehension of your project. Each figure, graph, and table must be directly referenced in the text. Note that plagiarism is using the materials (ideas/words) of another as one’s own and without crediting the source. This behavior is prohibited. So, take the time to properly cite materials written by someone else – include reference. If you have any question about this, ask the instructor or refer to Student Handbook. The following format is suggested for writing the report. While you do not have to follow this outline exactly, all of these elements must be included in your final report. Requirement 1. A descriptive title, your names, course number, and term under the title. 2. A 200-300 word abstract clearly summarizing the problem you investigated, why this is an interesting problem, your methodology, the main results you obtained, any important problems or difficulties encountered in the project, and a summary of your main results and conclusions. 3. An introduction precisely stating the problem and explaining why what you’ve done is important and interesting. It also should include the background necessary to understand the report. 4 4. A summary of previous work in this area, along with an explanation that places your project in the context of what has been done before (i.e. what is different and similar about what you have done compared to what has been done before). You must supply citations within the paper to the previous work you summarized in your annotated bibliography, plus any additional papers you think should be included. 5. A thorough description of your methodology. 6. An explanation and interpretation of your results. 7. A conclusion summarizing what you have done and what it means in a broader context. 8. Recommendations for future work and unsolved problems (if applicable) 9. References 10. Appendices: include meeting minutes and other supporting materials as needed
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