About Me
Cisco Certified Architect (CCAr)
1 **Foundation**
1-1 **Networking Fundamentals**
1-1 1 OSI and TCPIP Models
1-1 2 Network Devices and Their Functions
1-1 3 IP Addressing and Subnetting
1-1 4 Routing and Switching Basics
1-1 5 Network Security Fundamentals
1-2 **Enterprise Architecture**
1-2 1 Enterprise Network Design Principles
1-2 2 Network Segmentation and Zoning
1-2 3 Network Services and Protocols
1-2 4 Network Management and Monitoring
1-2 5 Network Automation and Programmability
2 **Design**
2-1 **Network Design Methodologies**
2-1 1 Design Life Cycle
2-1 2 Requirements Gathering and Analysis
2-1 3 Design Documentation and Validation
2-1 4 Design Implementation and Testing
2-1 5 Design Maintenance and Optimization
2-2 **Enterprise Network Design**
2-2 1 Campus Network Design
2-2 2 Data Center Network Design
2-2 3 WAN Design
2-2 4 Wireless Network Design
2-2 5 Security Architecture Design
3 **Implementation**
3-1 **Network Implementation Planning**
3-1 1 Implementation Strategies
3-1 2 Resource Allocation and Scheduling
3-1 3 Risk Management and Mitigation
3-1 4 Change Management
3-1 5 Post-Implementation Review
3-2 **Network Services Implementation**
3-2 1 IP Address Management (IPAM)
3-2 2 DNS and DHCP Implementation
3-2 3 Network Access Control (NAC)
3-2 4 VPN and Remote Access Implementation
3-2 5 Network Security Services Implementation
4 **Operation**
4-1 **Network Operations Management**
4-1 1 Network Monitoring and Performance Management
4-1 2 Fault Management and Troubleshooting
4-1 3 Capacity Planning and Management
4-1 4 Network Change and Configuration Management
4-1 5 Network Compliance and Auditing
4-2 **Network Security Operations**
4-2 1 Incident Response and Management
4-2 2 Threat Detection and Mitigation
4-2 3 Security Information and Event Management (SIEM)
4-2 4 Vulnerability Management
4-2 5 Security Policy Enforcement and Monitoring
5 **Optimization**
5-1 **Network Optimization Techniques**
5-1 1 Traffic Engineering and Load Balancing
5-1 2 Quality of Service (QoS) Implementation
5-1 3 Network Performance Tuning
5-1 4 Energy Efficiency and Green Networking
5-1 5 Network Optimization Tools and Technologies
5-2 **Network Automation and Orchestration**
5-2 1 Network Programmability and Automation
5-2 2 Software-Defined Networking (SDN)
5-2 3 Network Function Virtualization (NFV)
5-2 4 Automation Tools and Frameworks
5-2 5 Continuous Integration and Continuous Deployment (CICD) for Networks
6 **Leadership**
6-1 **Leadership and Management Skills**
6-1 1 Strategic Planning and Vision
6-1 2 Team Leadership and Development
6-1 3 Communication and Stakeholder Management
6-1 4 Financial Management and Budgeting
6-1 5 Project Management and Execution
6-2 **Professional Ethics and Standards**
6-2 1 Ethical Decision-Making
6-2 2 Industry Standards and Compliance
6-2 3 Intellectual Property and Licensing
6-2 4 Professional Development and Continuous Learning
6-2 5 Global and Cultural Awareness
2-2 5 Security Architecture Design Explained

2-2 5 Security Architecture Design Explained

Key Concepts

Security Architecture Design involves creating a robust and comprehensive security framework for a network. Key concepts include:

Layered Security

Layered Security, also known as Defense in Depth, involves implementing multiple security measures at various network layers. This approach ensures that if one layer is breached, others remain intact. Common layers include perimeter security, internal network segmentation, and endpoint protection.

An analogy for layered security is a fortified castle with multiple defensive layers. The outer walls, moat, and guard towers provide multiple lines of defense, making it difficult for attackers to penetrate.

Access Control

Access Control involves managing who can access network resources and what they can do. This includes implementing authentication mechanisms (like passwords and biometrics), authorization policies (defining user permissions), and accounting (tracking user activities). Tools like Active Directory and Role-Based Access Control (RBAC) are commonly used.

Think of access control as a secure building with keycard access. Only authorized personnel with the correct keycard can enter specific areas, ensuring that sensitive information is protected.

Encryption

Encryption involves converting data into a secure format that can only be read by someone with the correct decryption key. This protects data in transit and at rest. Common encryption methods include SSL/TLS for data transmission and AES for data storage. Encryption ensures that even if data is intercepted, it remains unreadable.

An analogy for encryption is a locked safe. Just as a safe protects valuables from unauthorized access, encryption protects data from being read by unauthorized parties.

Intrusion Detection and Prevention

Intrusion Detection and Prevention Systems (IDPS) monitor network traffic for suspicious activities and take action to prevent potential threats. IDS alerts administrators to potential threats, while IPS can automatically block or mitigate attacks. Tools like Snort and Firepower are commonly used for IDPS.

Think of IDPS as a security camera and alarm system. The cameras monitor the premises for suspicious activities, and the alarms sound if an intrusion is detected, allowing for quick response.

Security Policies and Procedures

Security Policies and Procedures define the rules and guidelines for securing the network. This includes creating policies for user authentication, data protection, incident response, and compliance. Regular training and awareness programs ensure that all users understand and adhere to these policies.

An analogy for security policies and procedures is a company handbook. Just as the handbook outlines rules and best practices for employees, security policies outline rules and best practices for network security.

Understanding and implementing effective Security Architecture Design is crucial for protecting network resources and ensuring business continuity. By mastering these concepts, network architects can create secure and resilient network environments.

© 2024 Ahmed Baheeg Khorshid. All rights reserved.