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  • digii.co.kr/2021/10/28/%eb%8b%a4%ec%96%91%ec%84%b1-%eb%aa%a8%ec%a7%91-%ec%86%8c%ed%94%84%ed%8a%b8%ec%9b%a8%ec%96%b4-%ec%8b%9c%ec%9e%a5-%ec%a0%90%ec%9c%a0%ec%9c%a8-2021-2025-%eb%85%84-%ec%b5%9c%ea%b3%a0-%ea%b5%ad%ea%b0%80/ (port 80)