Merge pull request #545 from Torild/patch-1

ufw: add page

pages/linux/ufw.md

@@ -0,0 +1,24 @@
+# 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`