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  • bitdays.co.kr/2021/02/23/%25EB%25B6%2584%25EC%2584%259D-%25EC%25A7%2580%25EC%2597%25AD-%25ED%2582%25A4-%25ED%2594%258C%25EB%25A0%2588%25EC%259D%25B4%25EC%2596%25B4-%25EC%25A0%259C%25EC%25A1%25B0-%25EC%2597%2585%25EC%25B2%25B4-%25EC%25B5%259C%25EA%25B3%25A0-%25EA%25B5%25AD%25EA%25B0%2580%25EC%259D%2598-%25EC%2597%25B0%25EA%25B5%25AC-8/ (port 80)