So I have my Suse supplying internet to a Dreamcast (yes I know) through a usb modem.
Dreamcast’s modem -> usb modem -> suse box-> ethernet -> router-> internet
I used this guide to set it up. However, I need to have certain ports mapped to the Dreamcast.
There’s a guide on how to map ports with winroute here But I have no idea how to do this in yast.
Should I be using masquerading feature of susefirewall? I looked at that but had no idea how to use it.
thanks,
King.
Hi King.
For the ports, go to: Yast2 > Security & Users > Firewall > Allowed Services > Advanced and put the port numbers in TCP ports.
should I have my usb modem configured to a certain zone?
maybe this is what I’m looking for?
iptables -t nat -A PREROUTING -i ppp0 -p tcp --dport 1234 -j DNAT --to 192.168.0.3:1234
You can do it that way, but you’d be better off editing the /etc/sysconfig/SuSEfirewall2 file. Otherwise, your changes won’t live through a reboot.
A better idea would be for you to use Yast. (Security And Users, -> Firewall). That makes it much easier to keep up with.
Hey, there’s a reason why all those neat GUI tools were invented. I’ve been spoiled by them. 
I put the ports into yast firewall, but it doesn’t seem to have helped. It seems like the ports are open, but they need to be forwarded to the Dreamcast (192.168.0.3)
Is it a symptom of port mapping/forwarding if I sometimes get a VERY slow connection speed from the dreamcast? It’s only in certain games that requires some ports…