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  • bitdays.co.kr/2021/07/22/%25EB%258B%25A4%25EC%259A%25B4-%25EC%25BB%25A8%25EB%25B2%2584%25ED%2584%25B0-%25EC%258B%259C%25EC%259E%25A5-%25ED%2581%25AC%25EA%25B8%25B0-%25EB%25A6%25AC%25ED%258F%25AC%25ED%258A%25B8-%25EC%25B5%259C%25EA%25B3%25A0-%25EA%25B5%25AD%25EA%25B0%2580-%25EC%2597%25B0%25EA%25B5%25AC-%25EB%258F%2599%25ED%2596%25A5-%25EA%25B3%25B5/ (port 80)