The keyword missing in terms of networking is NAT. That will allow you to discover iptables rules to turn the Pi into a NAT router in order to "bridge" the networks:
Code:
<i>
</i>echo 1 > /proc/sys/net/ipv4/ip_forward
iptables -t nat -A POSTROUTING -o external -j MASQUERADE
iptables -A FORWARD -i internal -o external -j ACCEPT
iptables -A FORWARD -i external -o internal -m state --state RELATED,ESTABLISHED -j ACCEPT
where internal (wired) and external (wireless) are the appropriate interface names. Assign static IP addresses for the internal network, and use the IP address of the Pi as the default route / gateway. You can add more iptables rules as appropriate to lock down the network.
Of course, there are router distributions that provide web interfaces and advanced capabilities, but iptables is often the most simple solution for simple tasks.
Be careful with DMZ terminology. It is highly likely if you place your Octane in your home router DMZ, it will be exposed to the world wide web with minimal protection. I do not think this is what you want to achieve.
