Top 8 must-know Docker concepts

How do we design a secure system? Designing secure systems is important for a multitude of reasons, spanning from protecting sensitive information to ensuring the stability and reliability of the infrastructure. As developers, we should design and implement these security guidelines by default. The diagram below is a pragmatic cheat sheet with the use cases and key design points. 🔹 Authentication - Design Points: Implement multi-factor authentication (MFA), use strong password policies, and consider biometric options. - Use Cases: User logins for web applications, employee access to internal systems. 🔹 Authorization - Design Points: Apply the principle of least privilege, use role-based access control (RBAC), and regularly review access rights. - Use Cases: Granting specific data access levels in a CRM system, admin vs. user roles in a web application. 🔹 Encryption - Design Points: Use TLS for data in transit, encrypt sensitive data at rest using strong encryption standards, and manage encryption keys securely. - Use Cases: Encrypting database contents, securing communication between microservices. 🔹 Vulnerability - Design Points: Regularly scan for vulnerabilities, promptly apply security patches, and use automated tools for continuous monitoring. - Use Cases: Patch management in an IT infrastructure, vulnerability assessments in software development. 🔹 Audit & Compliance - Design Points: Implement comprehensive logging, conduct regular security audits, and ensure compliance with relevant standards (e.g., GDPR, HIPAA). - Use Cases: Logging access to patient records, compliance checks in financial systems. 🔹 Network Security - Design Points: Use firewalls, segregate networks, employ intrusion detection/prevention systems (IDS/IPS), and secure DNS services. - Use Cases: Protecting corporate networks, securing cloud environments. 🔹 Terminal Security - Design Points: Secure endpoints with antivirus software, apply device management policies, and encrypt hard drives. - Use Cases: Employee laptops, point-of-sale (POS) systems. 🔹 Emergency Responses - Design Points: Develop an incident response plan, establish a security operations center (SOC), and conduct regular drills. - Use Cases: Responding to a data breach, managing a DDoS attack. 🔹 Container Security - Design Points: Use trusted base images, scan containers for vulnerabilities, and implement container runtime security. - Use Cases: Deployment of microservices in Docker containers, Kubernetes cluster security. 🔹 API Security - Design Points: Implement rate limiting, secure API endpoints with authentication, and validate input to prevent injection attacks. - Use Cases: Public-facing REST APIs, internal API communications. 🔹 3rd-Party Vendor Management - Design Points: Conduct security assessments of third-party vendors, establish secure data sharing policies, and monitor third-party access. - Use Cases: Vendor risk assessments, secure integration with external services. 🔹 Disaster Recovery - Design Points: Develop and test disaster recovery plans, implement data backup strategies, and ensure system redundancy. - Use Cases: Recovery from a ransomware attack, data center outage response. -- Subscribe to our weekly newsletter to get a Free System Design PDF (158 pages): bit.ly/3KCnWXq

You're Good at Linux if You Know What All Those Directories Mean. The Linux file system used to resemble an unorganized town where individuals constructed their houses wherever they pleased. However, in 1994, the Filesystem Hierarchy Standard (FHS) was introduced to bring order to the Linux file system. By implementing a standard like the FHS, software can ensure a consistent layout across various Linux distributions. Nonetheless, not all Linux distributions strictly adhere to this standard. They often incorporate their own unique elements or cater to specific requirements. To become proficient in this standard, you can begin by exploring. Utilize commands such as "cd" for navigation and "ls" for listing directory contents. Imagine the file system as a tree, starting from the root (/). With time, it will become second nature to you, transforming you into a skilled Linux administrator. Have fun exploring! Over to you: which directory did you use most frequently? – Subscribe to our weekly newsletter to get a Free System Design PDF (158 pages): bit.ly/3KCnWXq