Network and security issues to consider when migrating enterprise applications to Taiwan CN2

Introduction: When considering migrating applications to Taiwan’s CN2 network, enterprises should comprehensively evaluate network connectivity and security measures. This article focuses on the network and security issues that need attention when migrating enterprise applications to Taiwan’s CN2, providing actionable technical guidelines and risk warnings to help decision-makers and operations teams prepare for the migration and implement ongoing protection measures.

Select Taiwan CN2 It is usually based on the need for excellent routing, stable bandwidth, and low latency in the Asia-Pacific region. For applications targeting users in Taiwan and Southeast Asia, CN2 can provide better network quality. However, this also means it’s necessary to examine link availability, cross-border routing strategies, and the service provider’s SLAs to ensure business continuity is controllable and monitorable.

Regarding the network and security issues to consider when migrating enterprise applications to Taiwan CN2, latency and packet loss are the primary concerns. Multiple Ping/Traceroute tests must be conducted, and the actual application response time should be measured. Intermediate hops should be reduced through the use of the nearest exit points, intelligent routing, or accelerators, to ensure that the user experience meets the SLA requirements.

Bandwidth capacity estimation should be based on concurrent users, peak traffic, and future growth expectations. During migration, elastic bandwidth or on-demand scaling mechanisms should be designed, along with traffic peak protection, rate limiting, and application-layer throttling strategies, to prevent link congestion caused by single points of failure or sudden traffic spikes from affecting service availability.

To achieve routing redundancy, multiple BGP sessions need to be configured and connections established with different operators to prevent a single path from failing. Establish clear routing priorities, fallback strategies, and monitoring alerts. Optimize ingress and egress selection by combining AS path policies with community tags to enhance network fault tolerance and service availability.

When migrating to Taiwan CN2, it is important to focus on DDoS defense capabilities and edge filtering. It is recommended to combine a cleaning center, IP allowlist and blocklist, traffic behavior analysis, and rate-limiting mechanisms. At the same time, predefined emergency response procedures should be in place to ensure that during high-volume attacks, it is possible to quickly switch to cleaning or temporarily block the affected business links for protection.

Deploy enterprise-grade firewalls and Web Application Firewalls (WAF) in the target environment, and enable Intrusion Detection/Prevention Systems (IDS/IPS). Establish rule sets based on application characteristics, conduct regular audits of logs and policy updates, and integrate with security incident management processes to reduce the risk of exploitation at the application layer and host layer.

Ensure the confidentiality and integrity of data during transmission and storage. Use TLS 1.2/1.3, VPNs, or dedicated encrypted tunnels to secure cross-border data transfers. Enable two-factor authentication and certificate management for critical communications, and adopt a dual encryption strategy at both the transport layer and application layer for sensitive data.

Migrating to Taiwan requires considering data sovereignty and regulatory differences, as well as clarifying the storage locations and access controls for personal information and sensitive data. Establish data classification, least privilege principles, and audit strategies to ensure compliance with privacy regulations in relevant regions and the company’s own compliance requirements, thereby reducing legal and compliance risks.

Properly configuring DNS resolution strategies and using multi-node CDNs can significantly improve the global access experience. It enables location-based parsing, health checks, and intelligent fallback, ensuring that traffic can be quickly rerouted in case of regional failures, thereby reducing the risk of access disruptions caused by single points of failure.

Develop a detailed migration plan and implement it in phases: Test environment verification, phased rollout, traffic splitting, and rollback plans. Conduct end-to-end testing, stress testing, and security drills, and use monitoring metrics and log analysis to assess the impact of the migration, ensuring observability and controllability of the business during the transition.

Summary: Migrating enterprise applications to Taiwan CN2 requires preparation in various aspects, including network connectivity, routing redundancy, bandwidth planning, DDoS and edge protection, firewalls and WAFs, data encryption, compliance, and DNS/CDN. It is recommended to conduct a feasibility assessment and pilot tests on a small scale first, establish monitoring and emergency response mechanisms, and gradually expand by integrating best practices in security to ensure stable, secure, and compliant operations after the migration.