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  • bitdays.co.kr/2021/02/24/%25EC%259A%25A9%25EC%25A0%2591-%25EA%25B2%2580%25EC%2582%25AC-%25EC%258A%25A4%25EC%25BA%2590%25EB%2584%2588-%25EC%258B%259C%25EC%259E%25A5-%25ED%2581%25AC%25EA%25B8%25B0-%25EB%25B6%2584%25EC%2584%259D-%25EC%25B5%259C%25EA%25B3%25A0-%25EA%25B5%25AD%25EA%25B0%2580-%25EC%258B%25AC%25EC%25B8%25B5-%25EC%2597%25B0%25EA%25B5%25AC/ (port 80)