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  • bitdays.co.kr/2021/03/05/%ec%84%bc-%eb%8d%94%ec%8a%a4%ed%8a%b8-%eb%b6%84%eb%a7%90-%ec%bd%94%ec%96%b4-%ed%8c%90%eb%a7%a4-%ec%8b%9c%ec%9e%a5-2021-%ec%82%b0%ec%97%85-%eb%b6%84%ec%84%9d-%ed%9a%8c%ec%82%ac-%ec%a7%80%ec%97%ad-2/ (port 80)