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  • bitdays.co.kr/2021/04/09/%25EC%25A3%25BC%25EB%25B3%2580-%25EC%258B%25A0%25EA%25B2%25BD-%25EC%259E%2590%25EA%25B7%25B9%25EA%25B8%25B0-%25EC%258B%259C%25EC%259E%25A5-%25EC%25A0%2595%25EC%2583%2581-%25ED%259A%258C%25EC%2582%25AC-%25ED%2581%25AC%25EA%25B8%25B0-%25EB%25B6%2584%25EC%2584%259D-%25EB%25B6%2584%25ED%2595%25A0-%25EC%2582%25B0/ (port 80)