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I want to setup bandwidth control for our network, by using a 'main' computer as the hub to manage bandwidths of other computers connected to the same network.

Also, I have a dedicated IP with my internet provider, and would like to use the main computer as the server, and all other computer as networked devices. So when users access the IP, the Ubuntu server on the main computer gets accessed.

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closed as not a real question by Ƭᴇcʜιᴇ007, Brad Patton, 8088, CharlieRB, Aaron Miller May 17 '13 at 16:06

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

First read up on Subnetting and routing. Then consider creating two local networks: One "Lan with everything except the modem" connected to a NIC on the Ubuntu server. The other with the servers second NIC and the modem. Note that NO internet access will be possible if the server computer is turned off. – Hennes May 16 '13 at 14:21

If your goal is to limit your Internet bandwidth usage with your Ubuntu gateway you could use wondershaper.

Here's a nice and quick tutorial on how to do it with wondershaper.

You could use also a more network oriented distribution such as pfSense (FreeBSD based) or OpenWRT instead of Ubuntu for your gateway.

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Thanks for this @tony. Will try this out – cutoverRooster May 16 '13 at 14:59

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