Hey I'm trying to set up my iptables, but am kind of unsure what the syntax for the commands would be. I have been reading the iptables -h, but still havent gottent it. I use ddwrt on 2 routers, separated the wlan from the lan to 2 subnets. Now, I'm trying to set up my iptables to say that wlan can only connect to lan and nothing else, through udp&tcp 1516-2056. In addition, I need wan ssh to go all the way through to the computers set on the lan subnet. Lastly, the lan subnet needs to have outbound access to the internet.
So for wan
ssh -> accept
accept all <-
deny all ->

wlan
1516-2056 <-> lan subnet
deny all <->

lan
Accept -> 1516
accept <-

Does this make any sense? Is there a good guide on how to do this? Thanks
b.rake

Sorry about not (yet?) taking the rest of your question seriously, but as the answer to this part is yes, I thought that I'd throw this part of the answer at you, and see where we go from there.

http://iptables-tutorial.frozentux.net/
http://www.linuxhomenetworking.com/w...Using_iptables
http://www.yolinux.com/TUTORIALS/Lin...rkGateway.html


that link at 'frozentux' has what is effectively a manual for iptables. It is available in several forms, and I would suggest that you download something that you can read. The linuxhomenetworking is probably better on the 'networking context' for firewalling. The Yolinux one is probably the best 'quick 'n dirty, get something working' link.

I hope this has been the 'teach a man to fish' guide.