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-Ufw (Uncomplicated Firewall) is program for managing a netfilter firewall.
-It provides a command line interface and aims to be uncomplicated and easy
-to use. It is not intended to provide a complete firewall functionality via
-its command interface, but provides an easy way to add or remove simple rules.
+Ufw (Uncomplicated Firewall) is program for managing a netfilter firewall.
+It provides a command line interface and aims to be uncomplicated and easy
+to use.
-To run ufw at boot you can add the following code to rc.local file:
+Add the following code to /etc/rc.local to start Ufw at boot time:
if [ -x /lib/ufw/ufw-init ]; then
-/lib/ufw/ufw-init start
+ /lib/ufw/ufw-init start
fi
-Rules can be added with ports, services or application names. To specify an
-application you need a profile stored under /etc/ufw/applications.d directory.
+Ufw comes with a number of common application profiles. Create additional
+application profiles under /etc/ufw/applications.d. Each profile should
+contain a list of rules which include a title, description, and port(s) or
+port range.
-To add a profile create a app_name.INI file as the following:
+A custom application profile should look similar to this:
-[Samba]
-title=File/printer server for Unix
-description=Samba is a collection of programs that implements the SMB/CIFS protocol for unix systems.
+[Application]
+title=Application title
+description=A description for the application.
ports=137,138/udp|139,445/tcp
-Then, for example you can run:
-ufw allow from xx.xx.xx.xx app samba
+Where xx.xx.xx.xx is the IP address of an external host, enable this
+application profile by executing the following as root:
+# ufw allow from xx.xx.xx.xx app Application