How to block P2P traffic with Suricata (OpenVPN)?

Question

openvpn

Hey!
There is a task to block P2P, more specifically, torrent traffic, so that OpenVPN clients do not download torrents and do not receive DMCA complaints.
After searching, I found two variants of Suricata and Snort. I decided to try the first one, everything seems to work out, torrents do not work and there is P2P traffic blocking, but in the end the browser does not work and other applications, except for Telegram, which is very strange.
In general, are there any normal guides in 2018 for blocking P2P traffic? Thank you.

Answer 1

The distribution kit for Zeroshell routers is able to do nDPI (with a GUI, which is rare), you can test it. nDPI defines a cloud of protocols by headers.

Answer 2

block P2P specifically torrent traffic

Torrent traffic can be encrypted. It can only be determined indirectly.