colinux-users

[coLinux-users] Colinux on a closed network

[Dave C. <dc...@da...>]

Hi,

We have a number of XP machines on a closed network without DHCP (all
machines have a static IP).

All of the machines should connect to a 'Control' computer, but,
because of artificial limitations imposed by Microsoft, the control
computer is unable to handle all of the connections.

(The setup is a ship simulation lab with some 24 computers connecting
to the Control machine and simulating 8 ships).

The 24 computers would update the Control regarding their position and
course, etc.

However, because this is not possible in XP, we have added a linux box
to the network which is purely there to store files to be read and
written to by all 24 computers and also the Control.

I want to remove the Linux box and place a colinux instance on the
Control machine.

To do this, I need Colinux to offer a Samba share to the network to be
read and written to as if it were a seperate machine.

Is this possible?

How would it be done? With slirp, nat or bridged?

The network has static IPs 192.168.10.1-25, so the Colinux machine
would need to be 192.168.10.26

Re: [coLinux-users] Colinux on a closed network

[Josep M. A. S. <ja...@pa...>]

Yes, it is possible (That was my main use of colinux, until i changed my job).

This is how i did it:

Installed colinux, (in that case, with a debian image with samba and controlled
via webmin), set it with TunTAP with an IP on the same subnet, made a bridge
with windows between the hardware ethernet and the TunTAP device, and
everything worked perfectly (well, i had a problem writing to windows
partitions, but that was solved in the 7.x versions)


That is one option. The other is using the pcap-bridge. Supposedly, the TunTAP
way should be better, but i didn't do any measurements on that.

Don't try to do it with slirp, except if you're adventurous. You would have to
disable the service in windows, without closing the ports themselves, and open
the appropiate ports in the slirp configuration.

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Re: [coLinux-users] Colinux on a closed network

[Josep M. A. S. <ja...@pa...>]

Ok. here it goes.
First, i'm taking of this networking method:
http://colinux.wikia.com/wiki/Network#TAP
(Scroll down until you see "TAP with Windows Software Bridge")

colinux installer should have already installed the tap driver, and a network
inteface named "TAP Win32" or something like that should appear.

Usually, this would give a closed network between colinux and XP, on a defined
subnet. The trick here is to bridge this adapter with the physical one, a
feature that windows XP (Pro?) has.

So, if you are on the window where you see all the network adapters, you can
select both network cards (the physical one, and the TAP one), rightclick, and
a "Make bridge" option should appear.

Once bridged, Windows will show a third adapter, which from now on, is the only
one that Windows (software) see. In this third adapter, you have to configure
the IP of the windows machine, on the physical subnet. In your case,
192.168.10.100.

Then, colinux should be configured with an IP on that subnet too. 192.168.10.200
looks ok.

The key point here is that bridging is like putting a software hub between the
physical adapter and the tap driver.



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Missatge citat per Dave Coventry <dc...@da...>:

> Hi Josep Maria,
>
> I have installed Colinux on the box, but am unable to get Tuntap working.
>
> How is the bridge configured?
>
> Remember I an on a static IP. The Windows box has 192.168.10.100, the
> colinux ifconfig is on 192.168.10.200. How do I configure the tuntap
> adaptor? And the Bridge?
>
> Any advice?