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  • bitdays.co.kr/2021/09/03/%ec%98%a8%eb%9d%bc%ec%9d%b8-%ec%9e%85%ed%95%99-%ec%86%8c%ed%94%84%ed%8a%b8%ec%9b%a8%ec%96%b4-%ec%8b%9c%ec%9e%a5-2021-%ea%b3%b5%ec%9c%a0-%ea%b8%80%eb%a1%9c%eb%b2%8c-%ed%81%ac%ea%b8%b0-%ec%a7%80/ (port 80)