Merge branch 'master' of github.com:tldr-pages/tldr

pages/linux/ufw.md

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+# ufw
+
+> Uncomplicated Firewall.
+> Frontend for iptables aiming to make configuration of a firewall easier.
+
+- Enable ufw:
+
+`ufw enable`
+
+- Disable ufw:
+
+`ufw disable`
+
+- Add ufw allow rule:
+
+`ufw allow {{port}} {{service_name}}`
+
+- Add ufw deny rule:
+
+`ufw deny {{port}} {{service_name}}`
+
+- Show ufw rules:
+
+`ufw status`