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  • bitdays.co.kr/2021/09/10/3-%eb%8b%a8%ea%b3%84-%eb%ac%b4%ec%a0%95%ec%a0%84-%ec%a0%84%ec%9b%90-%ec%8b%9c%ec%8a%a4%ed%85%9c-ups-%ec%8b%9c%ec%9e%a5-2021-%ea%b8%89%ec%a7%84%ec%a0%81-%ec%84%b1%ec%9e%a5-%ec%a3%bc%ec%9a%94/ (port 80)