and encryption to create a secure private network between hosts on
the Internet.
tinc is Free Software and licensed under the
-[GNU General Public License](http://www.gnu.org/licenses/old-licenses/gpl-2.0.html)
+[GNU General Public License](https://www.gnu.org/licenses/old-licenses/gpl-2.0.html)
version 2 or later.
Because the VPN appears to the IP level network code as a normal
network device, there is no need to adapt any existing software.