I'm using 1.7.4 but every server will not work, i'll ask my administrator, he might be able to help........plus almost everything that has to do with connections are blocked for me.
No, i have a fast and stable internet, but it might be like the Minetest game i played, the servers are on ports, on minetest, i was only able to connect to servers with a port of 30000, anything above or below i couldn't connect.