방화벽 잠금 및 해제

https://happist.com/561474/%EC%9A%B0%EB%B6%84%ED%88%AC-18-04%EB%A1%9C-%EC%84%9C%EB%B2%84-%EC%9A%B4%EC%98%81-ufw%EB%A1%9C-%EB%B0%A9%ED%99%94%EB%B2%BD-%EC%84%A4%EC%A0%95/

[우분투 서버] UFW 방화벽 설정으로 서버 보안 강화하기(업데이트) | 꿈꾸는섬

 

ufw default allow incoming

ufw default allow outgoing

 

Problem running '/etc/ufw/before6.rules' ->

/etc/default/ufw -> v6 to no