Enterprise Cloud Guide Gcp Taiwan Native Ip And Vpc Network Security Best Practices

1.

overview: why choose gcp taiwan and native ip

brief introduction to the background of enterprise cloud migration: the driving factors for migrating from self-built servers/hosts to gcp.
latency and regulations: taiwanese users can reduce rtt and data sovereignty risks by choosing asia-east1 (taiwan).
native ip definition: the difference between gcp's regionally reserved external ip (static regional ip) and ephemeral ip.
network cost considerations: savings from combining egress bandwidth, cross-region traffic and cdn.
overview of best practices: first design the vpc subnet, then reserve regional static ip, and use lb+cloud armor+cdn for edge protection.

2.

native ip (static zone ip) configuration process and precautions

reserve static ip: reserve regional static ip in asia-east1 to avoid external network ip changes caused by restart.
ip type selection: select "region" instead of "global" to bind to a regional lb/vm to reduce latency.
naming and labeling: name it with service-frontend-tw-ip and add the cost-center label to facilitate billing tracking.
example command: gcloud compute addresses create frontend-ip --region=asia-east1 --addresses= (automatic or specified)
network security note: static ips still require access control through firewalls, load balancers, and cloud armor.

3.

vpc design: subnets, routing, and private wiring strategies

use custom vpc mode and customize subnets (for example, 10.10.0.0/16 is the front end, and 10.20.0.0/16 is the back end).
subnet layering: put the management/monitoring/database in a private subnet, and communicate externally only through nat or internal lb.
cloud nat: provides secure outbound connections for vms without external ips to avoid exposing external ips.
shared vpc and iam: use shared vpc to centralize network management and authorize it with service account.
routing and leakage prevention: explicitly prohibit preset routing to the internet, and use the principle of least privilege to design routing tables.

4.

firewall, cloud armor and ddos defense implementation

vpc firewall rules: adopt deny-by-default policy and only open necessary ports (such as tcp/443 and tcp/22 for management ip).
example rule: only allow 203.0.113.0/32 management ip to access ssh, and restrict 443 from the internet to the lb label.
cloud armor: establish waf and rate-based rules to prevent http flood and owasp attacks.
load balancer + auto-scaling: automatic scaling and smooth absorption of traffic spikes through https lb and backend managed instance group.
observation and alarming: enable vpc flow logs, cloud logging, and cloud monitoring dos/traffic alarming.

5.

integration and performance optimization of cdn, domain name, dns, and ssl

cloud cdn: enable cloud cdn on the front end and use https lb to provide fast edge caching.
ssl management: use google managed ssl or bring your own certificate to terminate ssl at the global lb.
domain name and dns: point domain name a/aaaa to the external ip of the load balancer and use cloud dns to provide low-latency resolution.
cache policy: set ttl according to resource type, long ttl for static resources (for example, 86400s), and short ttl for dynamic resources.
performance indicators: use pagespeed/gtmetrix to test changes in ttfb and loading time before and after migration, and continue to optimize.

6.

real cases and server configuration examples

case overview: a taiwanese e-commerce company will migrate its main website to gcp asia-east1 in 2024, with the goal of reducing latency and strengthening anti-ddos.
adopted architecture: https lb (external static ip) → cloud cdn → backend mig (e2-standard-4) + cloud armor.
summary of results: the average ttfb dropped from 280ms to 110ms, and an average of 120k malicious requests per day were blocked by cloud armor.
the server configuration example table is as follows (sample data):

project	example value
region/zone	asia-east1 / asia-east1-a
instance type	e2-standard-4 (4 vcpu/16gb)
disk	100gb ssd persistant disk
internal ip	10.10.1.10
external ip	asia-east1 static ip (example: 35.xxx)

practical advice: regularly practice failovers, review firewall rules, and monitor cost and performance metrics.