3. つなぎ、守る：ネットワークとネットワークセキュリティ from Coursera

Google サイバーセキュリティプロフェッショナル認定証の 3 つめのコースです。各コースでは初級サイバーセキュリティの職に必要なスキルを身につけることができます。

このコースでは、ネットワークがどのように複数のデバイスを接続し、通信を可能にするのかを探ります。まず、最新のネットワーク運用とプロトコルの基本を学びます。例えば、TCP/IP モデルについて学び、ルーターやモデムなどのネットワークハードウェアによってコンピュータがインターネット上で情報を送受信できる仕組みについて学びます。そして、ネットワークセキュリティについても学んでいきます。組織は多くの場合、ネットワーク上で貴重な情報を保存・送信するため、ネットワークはサイバー攻撃の一般的なターゲットとなります。このコースを修了すると、ネットワークレベルの脆弱性を認識できるようになり、ファイアウォールやシステムハードニング、仮想プライベートネットワークなどを使って、ネットワークを保護する方法を説明できるようになります。

サイバーセキュリティの分野で働いている現職の Google 社員が最適なツールやリソースを使って一般的なサイバーセキュリティの業務を遂行する実践的な方法を指導します。また就職活動への準備も手助けします。

この認定プログラムを修了すると、エントリーレベルのサイバーセキュリティの職に応募できるようになります。過去の業務経験は不要です。

What's inside

Syllabus

ネットワークアーキテクチャとは

ここでは、ネットワークセキュリティについてご紹介するとともに、現在発生しているセキュリティの脅威や脆弱性との関連について解説していきます。また、ネットワークアーキテクチャとネットワークを保護する仕組みについても学んでいきます。

ネットワーク運用

ここでは、ネットワークプロトコルやネットワーク通信がどのように脆弱性につながるかについて学びます。さらに、ネットワーク運用の安全性と信頼性を維持するために役立つ、ファイアウォールなどの一般的なセキュリティ対策についても学びます。

ネットワーク侵入を安全に防ぐ

ここではネットワーク攻撃の種類と、危険なネットワークシステムやデバイスを保護するために用いるテクニックを理解します。また、悪意ある行為者がネットワークインフラの脆弱性を利用するさまざまな方法と、サイバーセキュリティ職がその抜け穴を特定し、封じ込める方法について学んでいきます。

セキュリティハードニング

ここでは、ネットワークシステムを強化するネットワークハードニングの実践について学びます。具体的には、セキュリティハードニングが、悪意のある行為者や侵入方法に対していかに防御に役立つかを学んでいきます。また、クラウドインフラ独自のセキュリティ上の課題に対処するために、セキュリティハードニングをどう活用するかについても学びます。

Good to know

Know what's good

, what to watch for

, and possible dealbreakers

Explains essential cybersecurity threats and vulnerabilities

Introduces the network security infrastructure and different types of threats organizations face

Describes vulnerabilities at network level and how to protect against them using firewalls and system hardening

Covers both the basic knowledge and essential tools in network security

Provides practical guidance from Google employees, offering valuable insights into solving cybersecurity issues

The course is designed for beginners without any cybersecurity background

Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in 3. つなぎ、守る：ネットワークとネットワークセキュリティ with these activities:

Review the OSI model and network protocols

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Refresh your understanding of the fundamental concepts of network architecture and communication.

Browse courses on OSI Model

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Review the OSI model layers and their functions
Study common network protocols such as TCP/IP and UDP
Understand how network protocols work together to enable communication

Gather and organize resources on network security best practices

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Enhance your knowledge of effective network security measures by compiling a collection of best practices and resources.

Browse courses on network security

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Search for online resources on network security best practices
Identify reputable sources such as industry reports and white papers
Extract key insights and recommendations
Organize the resources into a coherent format, such as a document or presentation

Join a study group for network security concepts

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Enhance your understanding and retention of network security concepts by engaging in discussions and knowledge-sharing sessions with peers.

Browse courses on network security

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Find or join a study group focused on network security
Attend regular study sessions
Participate in discussions and ask questions
Share your own knowledge and insights

Four other activities

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Practice configuring firewalls using network security exercises

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Strengthen your understanding of network security by practicing firewall configuration in a simulated environment.

Browse courses on network security

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Find network security exercises that focus on firewall configuration
Set up a virtual environment for the exercises
Configure firewalls according to the exercise instructions
Test the effectiveness of your firewall configurations

Attend a cybersecurity workshop focused on network protection

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Enhance your practical skills and knowledge of network protection techniques by attending a specialized workshop.

Browse courses on network security

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Find a cybersecurity workshop focused on network protection
Register and attend the workshop
Participate actively in the hands-on exercises and discussions
Apply the lessons learned to your own network security practices

Follow a hands-on guide to deploying a website on a Linux server

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Practice deploying a website on a Linux server to reinforce your understanding of network architecture and security.

Browse courses on Linux Administration

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Find a tutorial on deploying a website on a Linux server
Set up a Linux server
Install the necessary software
Deploy your website
Test your website

Design a network security architecture for a real-world scenario

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Apply your knowledge of network architecture and security to create a practical design that addresses real-world security challenges.

Browse courses on Network Architecture

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Identify a real-world scenario
Research network security best practices
Design a network architecture that meets the security requirements
Create a detailed documentation of your design

Career center

Learners who complete 3. つなぎ、守る：ネットワークとネットワークセキュリティ will develop knowledge and skills that may be useful to these careers:

Network Security Analyst

As a Network Security Analyst, you would be responsible for protecting computer networks from security threats, identifying potential vulnerabilities in network design and configuration, and conducting security audits. This course, which covers network architecture, network security, and network intrusion prevention, may help you build a foundation for this role by showing you how to spot network vulnerabilities, use security tools, and implement security hardening.

See salaries and explore the career path for Network Security Analyst

Cloud Security Engineer

Cloud Security Engineers are responsible for securing cloud computing environments. This course, which covers network architecture, network security, and network intrusion prevention, may help build a foundation for this role by teaching you how to secure networks and understand cloud security risks.

See salaries and explore the career path for Cloud Security Engineer

Network Architect

Network Architects design and implement computer networks. This course, which covers network architecture, network security, and network intrusion prevention, may help build a foundation for this role by teaching you how to design secure networks.

See salaries and explore the career path for Network Architect

Penetration Tester

Penetration Testers are hired to test the security of computer networks and information systems. This course, which covers network architecture, network security, and network intrusion prevention, may be useful for understanding how networks are attacked and how to defend against those attacks.

See salaries and explore the career path for Penetration Tester

Ethical Hacker

Ethical Hackers are hired to test the security of computer networks and information systems. This course, which covers network architecture, network security, and network intrusion prevention, may be useful for understanding how networks are attacked and how to defend against those attacks.

See salaries and explore the career path for Ethical Hacker

Security Consultant

Security Consultants provide advice and guidance to organizations on how to improve their security posture. This course, which covers network architecture, network security, and network intrusion prevention, may be useful for learning how to assess network security risks and develop mitigation strategies.

See salaries and explore the career path for Security Consultant

Incident Responder

Incident Responders are responsible for responding to cybersecurity incidents. This course, which covers network architecture, network security, and network intrusion prevention, may be useful for learning how to triage incident reports and take appropriate action to mitigate risks.

See salaries and explore the career path for Incident Responder

Security Engineer

Security Engineers design, implement, and maintain security systems to protect computer networks and information systems from unauthorized access, use, disclosure, disruption, modification, or destruction. This course, which covers network architecture, network security, and network intrusion prevention, may be useful for developing skills in network security.

See salaries and explore the career path for Security Engineer

Security Auditor

Security Auditors are responsible for conducting security audits to identify vulnerabilities in computer networks and information systems. This course, which covers network architecture, network security, and network intrusion prevention, may be useful for learning how to assess network security risks and develop mitigation strategies.

See salaries and explore the career path for Security Auditor

Information Security Manager

Information Security Managers are responsible for developing and implementing security policies and procedures to protect information systems from unauthorized access, use, disclosure, disruption, modification, or destruction. This course, which covers network architecture, network security, and network intrusion prevention, may be useful for learning about network security risks and how to mitigate them.

See salaries and explore the career path for Information Security Manager

Network Operations Center Engineer

Network Operations Center Engineers are responsible for monitoring and maintaining computer networks. This course, which covers network architecture, network security, and network intrusion prevention, may be useful for learning how to secure networks.

See salaries and explore the career path for Network Operations Center Engineer

Information Security Analyst

Information Security Analysts are responsible for protecting information systems from unauthorized access, use, disclosure, disruption, modification, or destruction. This course, which covers network architecture, network security, and network intrusion prevention, may be useful for learning how to secure networks.

See salaries and explore the career path for Information Security Analyst

Systems Administrator

Systems Administrators are responsible for managing, operating, and securing computer systems. This course, which covers network architecture, network security, and network intrusion prevention, may be useful for learning how to secure networks.

See salaries and explore the career path for Systems Administrator

Cybersecurity Analyst

Cybersecurity Analysts are responsible for identifying, analyzing, and responding to cybersecurity threats. This course, which covers network architecture, network security, and network intrusion prevention, may be useful for learning how to secure networks.

See salaries and explore the career path for Cybersecurity Analyst

Network Administrator

Network Administrators are responsible for managing, operating, and securing computer networks. This course, which covers network architecture, network security, and network intrusion prevention, may be useful for learning how to implement network security measures.

See salaries and explore the career path for Network Administrator