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  • bitdays.co.kr/2021/09/15/%25EA%25B8%2580%25EB%25A1%259C%25EB%25B2%258C-%25EB%25A6%25AC%25EC%2584%259C%25EC%25B9%2598-%25EB%25B3%25B4%25EA%25B3%25A0%25EC%2584%259C%25EC%2597%2590-%25EB%2582%2598%25EB%2585%25B8%25EB%25B3%25B5%25ED%2595%25A9-%25EC%2584%25B8%25EB%259D%25BC%25EB%25AF%25B9-%25EB%25B6%2584%25EB%25A7%2590-%25EC%258B%259C%25EC%259E%25A5/ (port 80)