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  • bitdays.co.kr/2021/05/13/esd-%eb%b3%b4%ed%98%b8-%ea%b0%84%ed%8c%90-%eb%9d%bc%eb%b2%a8-%ec%8b%9c%ec%9e%a5-2021-%ed%81%ac%ea%b8%b0-%ec%84%b1%ec%9e%a5-%ea%b3%b5%ec%9c%a0-%eb%af%b8%eb%9e%98-%eb%8f%99%ed%96%a5-%ea%b0%80/ (port 80)