May I suggest an older version? After opening up all the required ports on our routers and disabling firewalls etc. me and a friend decided to try an older version and it worked the first time we tried. We use himachi to play doom 2 lans.
Is that Lan or Full Version Minecraft?
I don't think your connection wasn't working. The problem is 0.0.0.0: is actullay won't work. You need to type your same lan number in 1.4.2. I'm sure my brother type my lan number without copy 0.0.0.0: and it say "Logging In" e.g. 0.0.0.0: -> 192.168.0.5: (Do not copy my lan number).
Can anyone ask for help? I can't connect my brother. Did I need to find out the firewall?