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  • bitdays.co.kr/2021/06/24/%ec%97%94%eb%93%9c-%ed%8f%ac%ec%9d%b8%ed%8a%b8-%ed%83%90%ec%a7%80-%eb%b0%8f-%ec%9d%91%eb%8b%b5-edr-%ec%86%8c%ed%94%84%ed%8a%b8%ec%9b%a8%ec%96%b4-%ec%8b%9c%ec%9e%a5-%ec%98%88%ec%b8%a1-%eb%8f%99/ (port 80)