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  • bitdays.co.kr/2021/04/11/%ea%b8%80%eb%a1%9c%eb%b2%8c-%ea%b0%80%ec%8a%a4-%ed%81%ac%eb%a1%9c%eb%a7%88%ed%86%a0-%ea%b7%b8%eb%9e%98%ed%94%bc-gc-%eb%b0%8f-%ea%b0%80%ec%8a%a4-%ed%81%ac%eb%a1%9c%eb%a7%88%ed%86%a0-%ea%b7%b8/ (port 80)