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Re: [K12OSN] Networking configuration



Do I need a cross over cable between eth1 and my cable modem or just a regular cable?

----- Original Message -----
From: John Lucas <mrjohnlucas gmail com>
Date: Monday, June 16, 2008 5:44 pm
Subject: Re: [K12OSN] Networking configuration
To: "Support list for open source software in schools." <k12osn redhat com>

> Jeremy Schubert wrote:
> > I used to have three clients connected to by dlink device that
> acts as a
> > switch, dhcp server and proxy server (shares the internet, but
> I guess
> > not exactly a proxy server, anyway...)  Client computers
> gateway is set
> > to the ip of the dlink device.   The dlink device is
> connected to the
> > cable modem.
> >
> > 
> >
> > Now I have introduced my CentOS ltsp server.  Currently I
> have eth0 and
> > eth1 plugged into the dlink device.
> >
> > 
> >
> > So, do I have to plug eth0 into my cable modem and eth1 into
> my switch? 
> > And then the gateway for my client computers would be the ltsp
> server
> > instead of the dlink device?
> >
>
> You shouldn't have both NICs on the same network segment
> (subnet), it
> will not work.
>
> As I recall the client side of LTSP is on eth0 by default, so
> eth1 would
> go on the cable modem and eth0 goes on the LAN side (not WAN
> side) of
> the Dlink. Your clients also go on the LAN side of the DLink.
> This
> assumes you want to use the LTSP server as your router/firewall
> instead
> of the DLink. If this is the case, then be sure to *turn off*
> DHCP on
> the DLink and let the LTSP server handle that task too. The WAN
> side of
> the DLink will not be used. The client's default route would
> point to
> the LTSP server (be sure to turn on packet forwarding if you
> have PCs
> that need to pass traffic through the server).
>
> The other way to do this is to run a single NIC LTSP server
> (only eth0)
> and plug the LTSP server and all clients onto the DLink LAN
> side, turn
> off DHCP on the DLink but continue to use the DLink as your
> router/firewall with the WAN side connected to the cable modem.
> In this
> scenario, the DLink would be the default route for all clients
> (including the LTSP server).
>
> > Also, during the ltsp install, the eth0 was designated
> x.x.x.254 and
> > eth1 dhcp.  Currently I connect to the server using putty
> (ssh).  Is
> > there a cmd line I can use to change the eth1 to static and
> modify both
> > cards address?
> >
>
> You can usually change the network configuration with a GUI too.
> I use
> KDE and installed the KDE admin tools, which adds an
> "Administration"
> item to the main menu. The exact setup depends on your ISP. The
> single
> NIC setup wouldn't require changing eth1, because there would be
> no eth1.
>
>
> --
>          "History
> doesn't repeat itself; at best it rhymes."
>                          - Mark Twain
>
> | John
> Lucas                MrJohnLucas gmail com               |
> | St. Thomas, VI 00802     
> http://mrjohnlucas.googlepages.com/ |
> | 18.3°N,
> 65°W              AST (UTC-4)                         |
>
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