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Linux Disable Firewall Command - Techolac May 12, 2019 How do I turn off the firewall in Ubuntu 12.04? - Ask Ubuntu By default, the firewall on Ubuntu (which can't be removed, because its part of the kernel) is unconfigured, and has default allow on everything. Unless you've added ufw or iptables rules, the firewall (which cannot be disabled because its part of the kernel) will not filter/block anything (Default ALLOW rule).
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