From the article: > Currently, packets are not being encrypted within the UDP tunnel so packet sniffing over the internet is possible. It is encouraged to use

From the article: > Currently, packets are not being encrypted within the UDP tunnel so packet sniffing over the internet is possible. It is encouraged to use this over a protocol like SSH No encryption takes the P out of VPN. Also, if you are going to need SSH to make it secure, then you can just use OpenSSH's built-in support for the tun device using the -w option.