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  • bitdays.co.kr/2021/03/11/%ec%9e%90%ea%b8%b0-%ec%95%88%ec%a0%95%ed%99%94-%ec%b0%a8%eb%9f%89-%ec%8b%9c%ec%9e%a5-%ed%81%ac%ea%b8%b0-%eb%a6%ac%ed%8f%ac%ed%8a%b8-%ec%b5%9c%ea%b3%a0-%ea%b5%ad%ea%b0%80-%ec%97%b0%ea%b5%ac-%eb%8f%99/ (port 80)