Simple and Powerful: Quickly Master UFW Firewall Commands

Original link: https://blog.xiaoz.org/archives/18666

The server operating system that xiaoz often used before was the CentOS of the Redhat series. However, since CentOS Stream has become a rolling update preview version of RHEL, xiaoz has gradually turned to Debian. Although he was not used to it at first, after using it for a period of time, Xiaoz found that Debian is still very easy to use. Take the firewall management as an example, I am in Cent

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