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  • bitdays.co.kr/2021/09/15/2021-%25EB%2585%2584-%25EC%25BD%259C%25ED%2583%2580%25EB%25A5%25B4-%25EA%25B0%259C%25EC%259D%2598-%25EC%258B%259C%25EC%259E%25A5-%25EA%25B7%259C%25EB%25AA%25A8-%25EC%258B%25A0%25EA%25B7%259C%25EB%25B3%25B4%25EA%25B3%25A0-%25EC%25B5%259C%25EA%25B3%25A0-%25EA%25B5%25AD%25EA%25B0%2580%25EC%259D%2598-%25EC%25A0%2584/ (port 80)