I need rules that :
Block all incoming traffic ( internet > server) but allow outgoing ( server > internet ) and allow local services to run too
Only accept incoming traffic from ports I want.
I also need to this while in a ssh session ( I've been locked before ).
The reason I'm asking is because I'm unable to use UFW with my VPS provider... apparently because their kernel / OpenVZ...
While I tried to learn the commands by myself that is like learning to use a tool and trying to build a house. And would be really nice if I could have some productivity today instead of spending hours and hours trying to fix this. If someone could help me I would really appreciate.