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  • digii.co.kr/2021/10/28/%ea%b8%80%eb%a1%9c%eb%b2%8c-%ed%86%b5%ec%8b%a0-%ec%9a%b4%ec%98%81-%ea%b4%80%eb%a6%ac-%ec%8b%9c%ec%9e%a5-%eb%b6%84%ec%84%9d%ed%95%a8%ec%9c%bc%eb%a1%9c%ec%8d%a8-%ed%81%ac%ea%b8%b0-%ec%84%b8%ea%b7%b8/ (port 80)