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  • bitdays.co.kr/2021/09/15/%ea%b8%80%eb%a1%9c%eb%b2%8c-%ed%8f%b4%eb%a6%ac-%ed%85%8c%ed%8a%b8%eb%9d%bc-%ed%94%8c%eb%a3%a8%ec%98%a4%eb%a1%9c-%ec%97%90%ed%8b%b8%eb%a0%8c-ptfe-%ed%95%84%eb%a6%84-%ec%8b%9c%ec%9e%a5-%ea%b7%9c/ (port 80)