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参考 https://d1.awsstatic.com/webinars/jp/pdf/services/202110_AWS_Black_Belt_Site-to-Site_VPN.pdf https://d1.awsstatic.com/webinars/jp/pdf/services/20210209-AWS-Blackbelt-DirectConnect.pdf https://d1.awsstatic.com/webinars/jp/pdf/services/…