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  • bitdays.co.kr/2021/02/23/%25EC%258B%259D%25ED%2592%2588-%25EC%2582%25B0%25EC%2597%2585-%25EC%25A7%2584%25EA%25B3%25B5-%25EC%259E%25A5%25EB%25B9%2584-%25ED%258C%2590%25EB%25A7%25A4%25EB%25A5%25BC-%25EB%2583%2589%25EA%25B0%2581-%25EC%258B%259C%25EC%259E%25A5-%25ED%2581%25AC%25EA%25B8%25B0%25EC%2599%2580-%25EC%25B5%259C%25EA%25B3%25A0-%25EA%25B8%25B0/ (port 80)