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  • bitdays.co.kr/2021/09/15/%25EC%258B%25A4%25EB%25B2%2584-%25EC%25BD%2594%25ED%258C%2585-%25EB%25AF%25B8%25EC%2586%258C-%25EA%25B5%25AC%25EC%25B2%25B4-%25EC%258B%259C%25EC%259E%25A5-2021-%25EC%2584%25B1%25EC%259E%25A5-%25EC%259D%25B8%25EC%259E%2590-%25EC%25B5%259C%25EA%25B3%25A0-%25EC%25A0%259C%25EC%25A1%25B0%25EC%2597%2585%25EC%25B2%25B4/ (port 80)