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  • bitdays.co.kr/2021/09/19/2021-%eb%85%84-%ec%a0%81%ec%99%b8%ec%84%a0-%ed%9e%88%ed%84%b0-%ea%b0%9c%ec%9d%98-%ec%8b%9c%ec%9e%a5-%ea%b7%9c%eb%aa%a8-%ec%8b%a0%ea%b7%9c%eb%b3%b4%ea%b3%a0-%ec%b5%9c%ea%b3%a0-%ea%b5%ad%ea%b0%80/ (port 80)