[K12OSN] windows machines on LTSP subnet

[Gideon Romm]

Huck:

You need to:

1.  check iptables with:   iptables -L -t nat 
2.  check ip_forwarding with:  cat /proc/sys/net/ipv4/ip_forward
3.  If ip_forwarding is off (0), you should both turn it on now with:

echo "1" > /proc/sys/net/ipv4/ip_forward

and on reboot, by setting "net/ipv4/ip_forward=1" in /etc/sysctl.conf

4.  Check that you are passing the 
"option routers" and "option domain-name-servers" in your dhcpd.conf.
If not, add them with the IP of the LTSP box for "option routers" and
the ips of the DNS servers on your network to "option
domain-name-servers"   -- dont forget to restart dhcpd!

Then, it should all work.

-Gadi

On Wed, 2006-11-01 at 08:56 -0800, Huck wrote:
> Interesting... chkconfig shows NAT to be going in runlevels 2345.
> 
> I have no iptables rules when I do an 'iptables -L' no firewalling on 
> the LTSP server it's behind the school's firewall.
> 
> Here is a line from ip_conntrack :
> tcp      6 44 TIME_WAIT src=10.1.3.35 dst=209.104.35.15 sport=49647 
> dport=80 packets=6 bytes=1413 src=209.104.35.15 dst=10.1.3.35 sport=80 
> dport=49647 packets=6 bytes=760 [ASSURED] mark=0 use=1
> 
> --Huck
> 
> Petre Scheie wrote:
> > I ran into this last year on version 4.x.  As I recall, the problem was 
> > the server wasn't doing NAT, probably caused by my messing with & 
> > turning off iptables after boot.   Check /proc/net/ip_conntrack which 
> > should show your NAT activity.  In my case, I think the file was 
> > flat-out missing, but running 'service nat start' fixed it IIRC.
> > 
> > Petre
> > 
> > Huck wrote:
> >> Yesterday was the first time I attempted to put a windows machine 
> >> attached to the same subnet as my thin clients. It failed. The machine 
> >> receives an IP address the same as the thin clients...but no routing 
> >> takes place to get traffic from eth0 on the LTSP server TO eth1 which 
> >> has access to the rest of the world...
> >>
> >> Do I merely need to set up a 'route' on the LTSP server to allow 
> >> Windows machines to have Internet connectivity?
> >>
> >> --Huck
> >>
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> >>
> > 
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> > 
> > 
> 
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-- 
--------------------------------------------------------
Gideon Romm | Proud LTSP Developer
ltsp at symbio-technologies.com

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