Japanese Station Group Multi-ip Deployment Strategy To Achieve Robust Foreign Trade Promotion And Account Security Protection Plan

1.

overview and objectives

- goal: establish a robust, multi-ip, scalable and secure deployment architecture for the foreign trade station group facing japan.
- scenario: multiple independent sites (5-20) need to disperse ips and suppliers to prevent bans from being associated with ips.
- key points: server/vps selection, domain name strategy, dns+cdn, ddos protection, account and operation and maintenance sop.
- indicators: target 99.9% availability, average response delay <100ms (local in japan), average monthly attack with peak cleaning capability of 10gbps (through cdn/upstream).
- risk management and control: avoid single-point suppliers, dns leaks, domain name history issues, and centralized account management leading to centralized bans.

2.

multi-ip deployment principles and topology design

- distributed ip strategy: it is recommended to use 2-3 export ips from different provinces/different providers for each site (for example: linode/tokyo, さくらのvps, aws ap-northeast-1).
- ip pool size: small scale (5 sites) recommends at least 10 public network ips, medium scale (20 sites) recommends 30+ public network ips distributed among more than 4 suppliers.
- topology: the front-end uses cdn anycast, and each back-end site deploys an independent vps as the origin site. the reverse generation is mapped to different ips through different domain names/sub-domain names.
- ip isolation: avoid the concentration of a large number of ips under the same supplier, and use different asns or different regions to reduce correlation risks.
- mail and ptr: configure ptr and independent ip separately for the server that sends mail to ensure the integrity of spf/dkim/dmarc and avoid mixing with other ips in the station group.

3.

server/vps configuration examples and cost estimates

- configuration template (example, for reference): ubuntu 22.04 lts, 2 vcpu / 4 gb ram / 80 gb ssd, bandwidth 1 gbps share, on-demand snapshot backup.
- software stack example: nginx 1.22 + php-fpm or docker + traefik, certbot automatically issues certificates, fail2ban and ufw basic protection.
- performance target: a single instance can carry 2k-5k concurrent requests/second (static resource cdn acceleration), and the page first screen time is <1.2s (japanese node).
- backup and snapshots: daily incremental backup, comprehensive snapshots, s3 cold backup; recovery sla <2 hours.
- cost estimate (sample form, unit: usd/month):

node	provider/region	configuration	bandwidth	cost
a	linode/tokyo	2vcpu/4gb/80gb	1 gbps shared	$20
b	さくらのvps / tokyo	2vcpu/4gb/100gb	1 gbps shared	¥1,200 (approximately $9)
c	aws ap-northeast-1	t3.small 2vcpu/2gb	forward on demand	$16

4.

domain name and dns/cdn management strategies

- domain name grouping: each group of sites uses an independent domain name and independent registered email/whois information to avoid using the same registration account for all domain names.
- dns hosting: the main dns is decentralized (for example, some use cloudflare dns, and some use aws route53 or dnspod) to reduce single-point dns risks.
- cdn strategy: static resources completely go through cdn, pages that can be cached partially go through cdn, and the origin site only responds to api/dynamic requests, reducing the load on the origin site.
- caching and ttl: static resource ttl is set for 7 days, html short caching (60-300s), and the stale-while-revalidate strategy is adopted in cdn.
- https and certificates: automate certificate deployment (let's encrypt), and enable tls 1.3, hsts and http/2/3 on the cdn to improve performance and security.

5.

ddos protection and network layer defense strategies

- cdn cleaning: prioritize the use of cdns with cleaning capabilities such as cloudflare/alibaba/fastly as the first line of defense (interception of most l3/l4 traffic and simple l7 attacks).
- upstream protection: negotiate a black hole/traffic cleaning (scrubbing) mechanism with the vps provider or bandwidth provider and establish an emergency contact channel.
- firewall and current limiting: deploy iptables/nftables, nginx limit_req/limit_conn, fail2ban and mod_security on the source site for secondary filtering.
- logs and alarms: use prometheus + grafana to monitor bandwidth/abnormal requests and set threshold alarms (triggered if the traffic increase is >200% or the number of connections is >5000).
- malicious ip pool management: automatically ban ips that receive a large number of requests from a single ip in a short period of time, and issue waf rules and robot challenges at the cdn layer.

6.

account security, operation and maintenance process and automation

- account isolation: different supplier accounts are managed by different people or emails, and key accounts implement multiple administrators and audit logs.
- authentication policy: enforce 2fa/multi-factor authentication, strict ssh key login, disable password login and rotate keys regularly.
- permission control: adopt the principle of least privilege and iam role management access, and important operations require secondary confirmation and approval processes.
- automated operation and maintenance: use ansible/terraform to manage infrastructure as code (iac) to ensure reproducible deployment and rapid recovery.
- backup and drills: establish rto/rpo (for example, rto=2 hours, rpo=4 hours), and conduct fault recovery drills every quarter.

7.

real case: japanese station group deployment record (example)

- background: a foreign trade company operates 8 independent sites in the japanese market, with an average monthly visit volume of about 200k. the goal is to improve the local experience and reduce the risk of being blocked.
- deployment: using 3 vps providers (linode tokyo, さくらのvps, aws tokyo), a total of 18 ips were purchased, and the distribution strategy was to share 1-2 ip pools per 2 sites.
- configuration: most origin sites use 2vcpu/4gb/80gb ssd, static resources are accelerated through cloudflare pro, and dynamic interfaces are limited to 200 rps per instance.
- attack instances and handling: the peak value of an http layer attack was approximately 2.3 gbps/1.2 mpps. cloudflare quickly identified it and switched to the challenge page within 5 minutes, and the origin site load returned to normal.
- achievements and experience: through the combination of multi-vendor ip pool and cdn, the site's annual availability reaches 99.95%; experience includes the need to sign a ddos response process with the bandwidth provider in advance, decentralizing domain name registration information, and maintaining fast operation and maintenance sops.

8.

implementation steps and recommendation checklist

- the first step: sort out assets (domain name/ip/account/certificate) and manage them in groups.
- step 2: choose at least 3 providers and purchase an initial ip pool (example: 10-30 ips).
- step 3: set up a test environment and configure cdn + waf + origin site current limiting.
- step 4: automate deployment (ansible/terraform) and set monitoring and alarms.
- step 5: conduct regular drills, backup verification and security audits to maintain log compliance and exception response mechanisms.