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  • bitdays.co.kr/2021/09/15/2021-%25EB%2585%2584-%25EC%2584%25B8%25EB%259D%25BC%25EB%25AF%25B9-%25ED%2583%2580%25EC%259D%25BC-%25EC%25A0%2591%25EC%25B0%25A9%25EC%25A0%259C-%25EA%25B0%259C-%25EC%258B%259C%25EC%259E%25A5-%25EA%25B7%259C%25EB%25AA%25A8-%25EC%258B%25A0%25EA%25B7%259C%25EB%25B3%25B4%25EA%25B3%25A0-%25EC%25B5%259C%25EA%25B3%25A0/ (port 80)