Network security best practices
1. Network security best practices
Some of the network security best practices are listed on the slide. This list varies on a case-by-case basis based on the environment. Adopt a zero trust network model. This approach ensures that no user or device is implicitly trusted, regardless of their location inside or outside the organization's network. By verifying both user identity and context during access requests, you shift security controls from the network perimeter to individual users and devices, providing a more robust and granular approach to security. Secure connections between on-prem and Google Cloud: For organizations operating in hybrid or multi-cloud environments, prioritize secure connectivity between all environments to ensure data protection and minimize risks. Leverage Google Cloud's private access options like Cross-Cloud Interconnect, Dedicated/Partner Interconnect, and IPsec VPNs to establish secure, high-speed connections between your on-premises infrastructure and various cloud environments. Additionally, explore Private Service Connect for accessing Google APIs and published services with enhanced security, ensuring seamless communication while maintaining robust security measures. Disable default networks: to enhance network security and avoid IP address conflicts, disable the creation of default networks in Google Cloud projects. Plan your network and IP address allocation strategically across connected deployments and projects to ensure efficient and secure communication. As a best practice, limit the number of VPC networks per project to one for more effective access control. Secure your cloud perimeter with Google Cloud's tools like firewalls and VPC Service Controls. Employ Shared VPC to centralize network management and isolate workloads into separate projects, enhancing security and control. Create firewall policies and rules at multiple levels (organization, folder, VPC network) to allow or deny traffic based on various criteria, including IP addresses, protocols, ports, service accounts, and secure tags. Analyze your network. Google Cloud provides two tools, Cloud IDS and Packet Mirroring, to help you monitor and secure your network traffic in Compute Engine and Google Kubernetes Engine. Cloud IDS provides visibility into your VPC network traffic, while Packet Mirroring allows you to clone and forward specific VM traffic for further analysis and inspection with security tools. Use a web application firewall: strengthen the security of your external web applications and services by implementing Google Cloud Armor, a web application firewall (WAF) that also provides protection against DDoS attacks. For optimal protection of critical workloads, leverage the advanced features offered by Google Cloud Armor's Managed Protection Plus tier. Adopt automated infrastructure provisioning using tools like Terraform, Jenkins, or Cloud Build to create immutable environments for enhanced security and streamlined operations. Leverage Google Cloud's security blueprints as a foundation, or build upon them with your own automation to align with security best practices and guidelines. Monitor your network. Implement VPC Flow Logs and Firewall Rules Logging to gain near real-time visibility into your Google Cloud network traffic and firewall activity. Utilize tools like Cloud Logging, Cloud Monitoring, Firewall Insights, and Network Intelligence Center to track, analyze, and optimize your network security and performance.2. Let's practice!
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