ufw
The command line tool "ufw" stands for Uncomplicated Firewall. It is a user-friendly interface to the underlying netfilter firewall system used by Linux. Ufw helps users manage and configure their firewall rules quickly and easily through a command line interface. It is designed to simplify the process of setting up and managing firewall rules for both novice and advanced users. Ufw supports both IPv4 and IPv6 firewall rules and allows users to define policies based on ports, IP addresses, or services. It also provides a default set of rules that can be easily activated to allow or deny common services. Ufw provides essential security by enabling users to easily control and monitor incoming and outgoing network traffic on their Linux systems.
List of commands for ufw:
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ufw:tldr:08320 ufw: Show ufw rules, along with their numbers.$ ufw status numberedtry on your machineexplain this command
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ufw:tldr:25e7a ufw: Deny traffic on port 80 on this host.$ ufw deny ${80}try on your machineexplain this command
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ufw:tldr:2f459 ufw: Allow only TCP traffic from 192.168.0.4 to any address on this host, on port 22.$ ufw allow proto ${tcp} from ${192-168-0-4} to ${any} port ${22}try on your machineexplain this command
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ufw:tldr:8ffca ufw: Deny all UDP traffic to ports in range 8412:8500.$ ufw deny proto ${udp} from ${any} to ${any} port ${8412:8500}try on your machineexplain this command
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ufw:tldr:be607 ufw: Allow incoming traffic on port 5432 on this host with a comment identifying the service.$ ufw allow ${5432} comment "${Service}"try on your machineexplain this command
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ufw:tldr:e06db ufw: Delete a particular rule. The rule number can be retrieved from the `ufw status numbered` command.$ ufw delete ${rule_number}try on your machineexplain this command