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  • bitdays.co.kr/2021/02/23/%25ED%258F%25AC%25EB%25B0%258D-%25ED%2581%25AC%25EB%25A6%25AC%25EB%25A8%25B8-%25EC%2582%25B0%25EC%2597%2585-%25EC%258B%259C%25EC%259E%25A5-%25EC%259D%25B8%25ED%2581%25AC-%25EB%25A0%2588-%25EB%258D%2594%25EB%25B8%2594%25EC%259D%2598-%25EA%25B0%2580%25EB%258A%25A5%25EC%2584%25B1-%25EC%2584%25B1%25EC%259E%25A5-%25EC%2582%25B0/ (port 80)