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  • bitdays.co.kr/2021/02/25/%ec%84%a0%ed%98%95-%ec%95%8c%ed%82%ac-%eb%b2%a4%ec%a0%a0-%ec%88%a0%ed%8f%b0%ec%82%b0-%ec%8b%9c%ec%9e%a5-%ed%86%b5%ec%b0%b0%eb%a0%a5-%ea%b8%80%eb%a1%9c%eb%b2%8c-%ed%81%ac%ea%b8%b0-%eb%af%b8%eb%9e%98/ (port 80)