Here’re examples that would make it easier for you to understand: The | in parenthesis means that we can choose between these options and combine them!. The basic syntax is sudo ufw (allow | deny) ( | from | ) We do it via Command Line Interface (CLI). So make sure you execute sudo ufw disable before proceeding to more strict rule-making. ![]() ![]() We shouldn’t change that, instead we should remember to not have ufw enabled, while configuring ufw. But before, it is a good practice to disable UFW, so that deleting ALLOW rules won’t block our way with ssh connection sudo ufw disable and then: sudo ufw reset Configuring UFW PoliciesĬonfiguring Uncomplicated Firewall Policies is done through config file! nano /etc/default/ufw The default policy of ufw is to DENY EVERYTHING - which is definitely a good policy. If anything goes wrong, or you want to revert any changes to defaults, you can do that. **Then the host 192.168.1.2 WILL STILL BE BLOCKED Resetting UFW So if the 2nd rule denies all traffic for all the network e.g. IMPORTANT: ** It should be mentioned that these rules are interpreted one by one. While deleting the rules, we can refer to these numbers, instead of retyping the whole rule with sudo ufw delete rule 5 - this is pretty handy I’d say! Sudo ufw status numbered - Will provide us with a numbered list. In the beginning you’ll see that the output is simply Status: active Sudo ufw status - Gives us basic firewall rules.
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