What is difference between OpenVPN and PPTP?

I know PPTP is based PPP, so what is the openVPN based on ? can the packets of openVPN be

routed by ubuntu server ? thanks!

Solution 1:

What is the openVPN based on ?

SSL/TLS

can the packets of openVPN be routed by ubuntu server?

Yep, of course!

Solution 2:

The following article may be of help: What’s the difference between PPTP VPN and OpenVPN?

The conclusion at the end of the article is as follows:

To sum up, if you are looking for high security and privacy you should choose OpenVPN. If you need easy-to-setup VPN, PPTP is a good choice. For mobile devices, both OpenVPN and PPTP can be used.