HIT172 Operating Systems and Applications

Introduction

Operating systems provide for comprehensive security strategies geared towards securing computer systems by configurations. This is through the system administrations as offered by the respective operating systems, as such, these can be through the automatic assigning of resources, restrictions, and the general policies designed to govern the usage of the respective computer system (Ionescu, 2020). This case demonstrates such in the form of programming and policies as outlined in the various tasks as implemented in the project.

Task 1: Bash scripting

Looping is an important technique in programming that is essential flow control, a loop permits the repetition of a given task in the program, there are several such loops in programming including, do-while loops and while loops (Pajankar, 2021). A while loop is used as an example in this task to demonstrate the looping process in a bash script that is supposed to accept 7 integers within a range of 7 -70. The if values is used in testing and putting the conditions on the program.

Task 2: Bash scripting

This task of bash scripting offers easy programming techniques that simply require a bash terminal for compilation and execution. In this project, a raffle game is used to illustrate the bash script as a programming technique. This game is a replica of system administration to automatically assign resources in a given network for system administration as facilitated by a bash script.

Task 3: Secpol

Secpol in Windows systems are a part of the Group Policy solutions designed to enforce the security of a given computer system, the efficiency of the SECPOL security strategy is evident in the system's denial for the violation of any policy. In this case, a violation will not be allowed to run if it is against the set policies.

Security in computer systems is an essential part of ensuring the security of the information systems in the respective networks and computer systems. Computer security is mostly achieved through configurations of the involved systems. This is through monitoring and restrictions as offered in the respective computer systems. In this task, the use of SECPOL is demonstrated as a system administration tool to ensure the security of the system by simply configuring the GPO as specified (Zhang, et.al 2020). This is used to create policies that are to be adhered to to ensure the security of the computer system as demonstrated below. Password policy for instance can be implemented in this perspective bearing the following aspects;

Windows systems provide for SECPOL system administration that comes pre-installed in Windows operating systems. This tool is used for system administration such as password policy as demonstrated in this section.

Task 4: SRP

Software restriction policy can be described as an assortment of policies that identifies software programs in the respective computer domain. This is a security strategy to control the software installation and usage in the respective computer system. This software restriction policy is tailored towards the restriction of the execution of software programs from common users (Zamora, et.al 2019). In this case, only the system administrators are allowed to be installed and executed by the system administrators only.

The execution and installation of software applications are essential in controlling the common vulnerabilities that emanate from software programs from the internet (Pinto, et.al 2019). It is thus important to have a clear control on what type of applications can be installed in the system, as such, the installation and execution of software applications can be managed by system administrators such that the users do not install vulnerable and unsecure software systems into the system that would ultimately result into computer security vulnerabilities and attacks as such.

Conclusion

As demonstrated in the tasks above, system administration is an important part of security in computer systems designed to secure system usage. The use of policies and restrictions as demonstrated in the last two tasks are vital in giving a useful framework to guide the usage of the computer system (Vorobiev, et.al 2017). This can be done in addition to the configuration measures set to secure the security of the system through network/ system configurations.

Reference List

Ionescu, A. (2020, August). OS Security Is Hard: Why All the Fuzzers in the World Won’t Change the Way Platform Security Is Failing Us. In 14th {USENIX} Workshop on Offensive Technologies ({WOOT} 20). USENIX} Association.

Pajankar, A. (2021). Shell Scripting. In Practical Linux with Raspberry Pi OS (pp. 91-110). Apress, Berkeley, CA.

Pinto, S., & Santos, N. (2019). Demystifying arm trust zone: A comprehensive survey. ACM Computing Surveys (CSUR), 51(6), 1-36.

Vorobiev, E. G., Petrenko, S. A., Kovaleva, I. V., & Abrosimov, I. K. (2017, May). Analysis of computer security incidents using fuzzy logic. In 2017 XX IEEE International Conference on Soft Computing and Measurements (SCM) (pp. 369-371). IEEE.

Zhang, B., Chang, X., & Li, J. (2020). A generalized information security model SOCMD for CMD systems. Chinese Journal of Electronics, 29(3), 417-426.

Zamora, P. M., Kwiatek, M., Bippus, V. N., & Elejalde, E. C. (2019). Increasing Windows security by hardening PC configurations. In EPJ Web of Conferences (Vol. 214, p. 08019). EDP Sciences.

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