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  • bitdays.co.kr/2021/05/07/%ec%8a%a4%eb%a7%88%ed%8a%b8-%ec%a3%bc%ec%82%ac%ea%b8%b0-%ed%8e%8c%ed%94%84-%ec%8b%9c%ec%9e%a5-%ed%81%ac%ea%b8%b0-%ea%b3%b5%ec%9c%a0-2021-%ec%b5%9c%ea%b3%a0-%ec%84%a0%eb%8f%84-%ea%b5%ad%ea%b0%80/ (port 80)