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  • bitdays.co.kr/2021/04/15/%eb%82%9a%ec%8b%9c-%ec%b9%b4%ec%95%bd-%ec%8b%9c%ec%9e%a5-%ec%88%98%ec%9a%94-%ec%a6%9d%ea%b0%80-%eb%af%b8%eb%9e%98-%eb%b2%94%ec%9c%84-%ec%8b%9c%ec%9e%a5-%ed%98%84%ed%99%a9-%ea%b7%b8%eb%a6%ac/ (port 80)