Very Computer

> Is it possible to share a cable modem connection between a Linux computer
> and a Windows computer using only one network card in the Linux one...
> The thing I want is to use a hub to connect to other computers to the Linux
> one...

>       ----------
>          hub
>       ----------
>      /    |    \
>     /     |     \
>   Linux  cable  Windows

> I think it would be possible if I had a fix cable IP adress... But I have to
> use DHCP for the cable. So is it still possible ? without having to
> reconfigure the Windows machine each time the cable IP changes ?

> many thanx in advance

>You can make your windows box use the IP range 192.168.1.x and have your
>linux box use your cablemodem's IP and then setup ipmasqerading on your
>linux box to allow masqerading of the 192.168.1.x subnet over your
>cablemode ip.

>>You can make your windows box use the IP range 192.168.1.x and have your
>>linux box use your cablemodem's IP and then setup ipmasqerading on your
>>linux box to allow masqerading of the 192.168.1.x subnet over your
>>cablemode ip.
> Doesn't he has to change the picture a bit too? Like
> Linux ------ hub ------ windows
> |
> |
> cable
> Can even use a crossover cable btw.
> Arjan
> --
> Slashdot: News for nerds. Stuff that matters.
> http://www.slashdot.org

> >>You can make your windows box use the IP range 192.168.1.x and have your
> >>linux box use your cablemodem's IP and then setup ipmasqerading on your
> >>linux box to allow masqerading of the 192.168.1.x subnet over your
> >>cablemode ip.

> > Doesn't he has to change the picture a bit too? Like

> > Linux ------ hub ------ windows
> > |
> > |
> > cable

> > Can even use a crossover cable btw.

> > Arjan
> > --
> > Slashdot: News for nerds. Stuff that matters.
> > http://www.slashdot.org

> This setup requires that the Linux gateway system has two NICs in it.
> One to connect it to the cable modem and the other to connect it to the
> hub. A good set of ipchain firewall rules should be setup between the internal
> and external networks to minimize the risk of getting hacked.

> This article has a good example of IP Masquerading firewall rules.

> http://linuxgazette.com/issue46/pollman.html

> Tony

> --
> Anthony Schlemmer

>Is it possible to share a cable modem connection between a Linux computer
>and a Windows computer using only one network card in the Linux one...
>The thing I want is to use a hub to connect to other computers to the Linux
>one...

>       ----------
>          hub
>       ----------
>      /    |    \
>     /     |     \
>   Linux  cable  Windows

>I think it would be possible if I had a fix cable IP adress... But I have to
>use DHCP for the cable. So is it still possible ? without having to
>reconfigure the Windows machine each time the cable IP changes ?

>many thanx in advance

> With my cable modem, I have to reset the cable modem any time
> the Network Interface Card (NIC) changes. Do not see your setup
> working without you buying a second IP address.

> Here is a little satire I send to people with your setup.

> Hey, go ahead and plug you cable into the uplink port.

> Here are the advantages:
>      Everyone else on your cable can see traffic from ALL your machines.
>      Crackers can get to all machines at high speed.
>      Keeps the ISP Gateway busyer filtering out your intermachine packets.
>      keeps the bandwidth to gateway from being as fast as it might be.
>      much easier for Trojans to call home.
>      You get to put firewalls on all machines instead of just one.

>  (anyone junp in here, those were the only advantages I could think of offhand)

> Do not look at the following news groups, you will deny yourself hours
> of fun that other people have had.
>         comp.security.firewalls:
>         comp.security.misc:
>         comp.os.ms-windows.nt.admin.security!
>         microsoft.public.winnt50.beta.security!

> Oh, and do not look here on how to set up your network
> http://www.i2.i-2000.com/~datamedc/TRANSFER/Cable_modem_share_diag.gif
> http://www.timhiggins.com

> >Is it possible to share a cable modem connection between a Linux computer
> >and a Windows computer using only one network card in the Linux one...
> >The thing I want is to use a hub to connect to other computers to the Linux
> >one...

> >       ----------
> >          hub
> >       ----------
> >      /    |    \
> >     /     |     \
> >   Linux  cable  Windows

> >I think it would be possible if I had a fix cable IP adress... But I have to
> >use DHCP for the cable. So is it still possible ? without having to
> >reconfigure the Windows machine each time the cable IP changes ?

> >many thanx in advance

> --
> The warrenty and liability expired as you read the message.
> If the above breaks your system, it's yours and you keep both pieces.
> Practice safe computing. Backup the file before you change it.
> Do a,  man every_command_here, before doing anything or running a script.