Hello. My suggestion is to have a togglable option(maybe in the connections part of Tixati's settings) to prevent Tixati from connecting to any peers with a privileged port. While someone could configure their client to use a privileged port, nobody ever does. Having it as a toggable option lets the user decide.

In my opinion, I don't think Tixati(or other BitTorrent clients in general) should connect to privileged ports unless it's for something like http web seeding or fetching rss feeds. Whenever I see a peer with a privileged port in the list, it's never running a BitTorrent client. I wouldn't want my computer trying to connect to it and contribute to a DDoS attack.

As an example, the libtorrent library has implemented this feature if you would like something to reference to. See section named "no_connect_privileged_ports".

https://www.libtorrent.org/reference-Settings.html

more info: https://geeknizer.com/bittorrent-as-ddos-tool/

Thank you reading and considering.