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Corporate Network Segmentation to Security Level Improving

The aim of the bachelor thesis is Corporate Network Segmentation to Security Level Improving. During the audit of the company's network, several problems were identified, such as a single network, weak nodes, no backup channel, a separate strand with Lithuanian servers, HQ branch without a backup channel. The most popular network security threats and attacks were reviewed, DiD strategies and measures were introduced, an audit of the existing computer network was performed, and the new network topology was drawn. Based on the Cisco PPDIOO model, a plan for gradual restructuring in a new network has been drawn up. A central device was installed in the DC of Latvia, an IPsec tunnel was agreed with the DC of Lithuania, tests were carried out. All branches were provided with backup channels, which made it possible to test a new network first through the backup channel and only when all the tests were performed and were positive, the main channel could easily be connected as well. The backup channel routers and branch routers are configured according to a single template to allow easy interchangeability. Configured access to branch switches and backup routers from both channels: primary channel and backup channel. The network has been tested and is working.

Author: Igors Manžurcevs

Supervisor: Elena Revzina

Degree: Bachelor

Year: 2024

Work Language: English

Securing the future of remote work: Novel cyber threat mitigation strategies

The business environment has been greatly changed by the COVID-19 pandemic, accelerating the shift to remote work and increasing organizations' susceptibility to cyber threats. Conventional security approaches that concentrate on perimeter defense have been ineffective in addressing the challenges of remote work environments. This thesis examines new risk mitigation strategies for addressing cyber threats, focusing on implementation and effectiveness of zero-trust security frameworks. This study uses a mix of qualitative and quantitative research methods, including whitepapers analysis and expert questionnaires, to identify significant cybersecurity threats linked to remote work. It assesses the effectiveness of zero-trust principles and explores cybersecurity professionals' perception and understanding. The results show that adopting a zero-trust framework greatly improves an organization's security posture by implementing stringent access controls and continuous monitoring, reducing risks like breaches, phishing attacks, and other cyber threats. Furthermore, the research emphasizes the difficulties of zero-trust architectures implementation, such as the required cultural shifts within organizations and technical requirements.

Author: Jana Kudinova

Supervisor: Mihails Savrasovs

Degree: Master

Year: 2024

Work Language: English

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