How do I bridge my ethernet and wireless on my laptop in Ubuntu?
By Administrator on Apr 19, 2010 in Ubuntu Support
I am setting up a new desktop, as well as it has an ethernet card. My laptop pc has mobile and ethernet. I can’t obtain the desktop’s USB, therefore i’d like to temporarily attach it to my laptop pc by using ehternet and then take advantage of the mobile on the laptop pc to produce a network bridge. They are each running Ubuntu 9.10. Is this possible to do?
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RA | Apr 19, 2010 | Reply
Yes, this is possible and relatively straight forward:
1. You’ll need a cross-over cable (or a switch) between the ethernet ports of the computers.
2. You’ll need to create on both computers static IP configurations for the ethernet ports in a subnet that is separate from the wireless subnet (e.g. 192.168.99.1 on the laptop and 192.168.99.2 on the desktop if wireless is 192.168.0.x or 192.168.1.x). In the desktop configuration, use the laptops ethernet IP address as the gateway.
3. On the laptop, you’ll net to enable IP masquerading so that traffic from the ethernet port gets forwarded to the wireless port. Instructions for how to do that are here: https://help.ubuntu.com/community/Internet/ConnectionSharing
Max M | Apr 19, 2010 | Reply
Wow, that’s a tough one. I’m not sure if that’s possible. What I would try is to create a peer to peer connection and see if it works on Ubuntu. If it doesn’t, I’m out of ideas.