@Nachtfalke:
I am thinking of a small home router like a small d-link, netgear, zyxel, fritz!box, speedport
Just something really small, quiet, less power consumption.
http://www.reichelt.de/?ARTICLE=37669;PROVID=2028;&utm_source=Preisvergleich&utm_medium=CPC&utm_campaign=google_feed
Didn't you get any Modem, Router from you ISP ?
Yes but my cable modems doesn't have advanced firmware. It's like a usb modem. (does not have router function)
Do not have NAT-Firewall anything.
Thanks.