I inherited an old Linux box as well as a MyBookLive and would like to make the MyBookLive available over my wireless, essentially using the Linux box as a wireless access point.

I just wiped the Linux box (home) and installed Ubuntu 12.04 on it. My network setup currently looks like this:

       (192.168.0.1
    netmask 255.255.255.0)     
ISP --- wireless router --- wlan0 on home (192.168.0.12)
               |             eth0 on home --- MyBookLive
            MacBook
        (192.168.0.11)

so that the MyBookLive is basically a glorified external hard drive. The router does have an Ethernet port, but it is being used by my roommate's computer so I can't plug the MyBookLive directly into it.

Right now I can ping MyBookLive.local and MacBook.local from home, but I am having trouble understanding and figuring out what the correct iptables commands are to make my MacBook see my MyBookLive through the Bonjour network. Also, I'm not sure if I need to set up DNS to forward xxx.local Bonjour/Zeroconf addresses.

I tried the following to forward my entire wired network (which has only my MyBookLive) to a single IP address:

sysctl net.ipv4.ip_forward=1
iptables -A FORWARD -i wlan0 -o eth0 -j ACCEPT
iptables -A FORWARD -i eth0 -o wlan0 -j ACCEPT
iptables -t nat -A PREROUTING -i eth0 -p tcp -j DNAT --to 192.168.0.66
iptables -t nat -A PREROUTING -i eth0 -p udp -j DNAT --to 192.168.0.66

but I can't ping this address from my MacBook. This is probably horribly wrong, but I am a complete noob at setting up this kind of network and could use some expert help with setting this up properly.