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  • bitdays.co.kr/2021/02/23/%25EC%259C%25B5%25ED%2595%25A9-%25EB%2590%259C-%25EC%258B%25A4%25EB%25A6%25AC%25EC%25B9%25B4-%25EC%25BF%25BC%25EC%25B8%25A0-%25EC%259C%25A0%25EB%25A6%25AC-%25EC%258B%259C%25EC%259E%25A5-2021-%25EC%2596%25B4%25EB%2596%25BB%25EA%25B2%258C-%25EB%258B%25A4%25EA%25B0%2580%25EC%2598%25A4%25EB%258A%2594-%25EB%2585%2584/ (port 80)