[K12OSN] Networking configuration
jschubert at shaw.ca
Tue Jun 17 00:26:30 UTC 2008
Thanks John. Yes, you're obviously correct, I should use LTSP for dhcp and
dlink only for LAN. I will do it this way because I want to use either
Squid Guard Dans Guardian.
> You can usually change the network configuration with a GUI too. I use
I need to get VNC working first. I followed the instructions at
m=binary and got to using netstat to see if VNC is running correctly. The
result I get now is shown below. Might this have something to do with not
having my network setup correctly yet?
You have new mail in /var/spool/mail/root
[root at server ~]# netstat -an|grep 590
tcp 0 0 0.0.0.0:5900 0.0.0.0:*
tcp 0 0 0.0.0.0:5901 0.0.0.0:*
tcp 0 0 0.0.0.0:5902 0.0.0.0:*
tcp 0 0 0.0.0.0:5903 0.0.0.0:*
tcp 0 0 0.0.0.0:5904 0.0.0.0:*
tcp 0 0 0.0.0.0:5905 0.0.0.0:*
tcp 0 0 0.0.0.0:5906 0.0.0.0:*
unix 3 [ ] STREAM CONNECTED 13590 /tmp/.ICE-uni
From: k12osn-bounces at redhat.com [mailto:k12osn-bounces at redhat.com] On Behalf
Of John Lucas
Sent: June-16-08 5:45 PM
To: Support list for open source software in schools.
Subject: Re: [K12OSN] Networking configuration
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 at gmail.com |
| St. Thomas, VI 00802 http://mrjohnlucas.googlepages.com/ |
| 18.3°N, 65°W AST (UTC-4) |
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