I read:
i'm not too fit in network-stuff. i'd like to send numbers between 2 computers over the internet. Both computer are client in a LAN, but not behind a firewall. I just want to know if it's possible or not. If not I could stop looking for how to realize it.
possible,
just look at the help files for [netreceive] and [netsend] but nowadays the preferred way is maybe to use OSC for that.
HTH
x