openSUSE firewall samba shares

So I got a home network set up including a NAS which runs in the basement. All works fine with all computers except on my openSUSE machine. I simply can't detect any of the other computers on the network, including the NAS. Internet access works just fine.
I disabled the firewall which fixed the problem I had all the access again. So I determined that it is the firewall which is causing the problems and although disabling the firewall is a fix it's obviously not a permanent one (router firewall works fine for now, at least there were no firewall penetrations detected). So my question is, how do I set up the firewall properly so I can keep it running but at the same time have all the local network access?

It is in YaST firewall settings you will have to open the port for samba

Thanks!