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  • bitdays.co.kr/2021/05/02/%ec%8a%88%ed%8d%bc-%ec%98%a5%ec%82%ac%ec%9d%b4%eb%93%9c-%eb%94%94%ec%8a%a4-%eb%ac%b4%ed%83%80-%ec%a0%9c-sod-%ec%8b%9c%ec%9e%a5-%eb%b3%b4%ea%b3%a0%ec%84%9c%eb%8a%94%ec%9d%b4-%ec%82%b0%ec%97%85/ (port 80)