[ubuntu-uk] Edubuntu thin client subnet and Windows Domain

Nathan Arkless arklessn at GravesendGrammar.eu
Tue Mar 22 13:00:33 UTC 2011

Hi All

[cid:image002.png at 01CBE890.D188A8C0][cid:image003.png at 01CBE890.D188A8C0][cid:image002.png at 01CBE890.D188A8C0][cid:image001.png at 01CBE890.6DDBB100][cid:image001.png at 01CBE890.6DDBB100]I'm new to the group and would like to ask your help.

I'm an IT tech at a school and I want to demo Edubuntu with thin clients to the senior management and help them see the light.

I have an Edubuntu server with two nics joined to the primary windows domain and I can log on with domain credentials and everything is AOK. I used LikewiseOpen 6 to join the server to the primary domain.

So, on my Edubuntu server eth1 is connected to the primary domain and has a static IP. eth2 also has a static IP and is the DHCP for the thin client subnet, connected to a switch. IP forwarding is enabled.

DOMAIN             eth1               Edubuntu Server             eth2 (SUBNET)             switch              clients

So far, so good: I can log on the thin clients with one of the local accounts specified on the Edubuntu server and with that account I can surf the net and, if I supply domain credentials, browse the primary domain.

Problem I have is:

I can't work out how to log on to the primary domain with a Active Directory account directly from a thin client. If I try DOMAIN\user to log on, after giving the password, the password screen refreshes and 'domainuser at 11.*.21.*'s password' appears under the blank password box. The IP in that message is the IP for the subnet and not the primary domain.

I feel like I'm miss-understanding some basic simple step but I just can't figure it out.

Here's some of the config files:


auto lo
iface lo inet loopback

auto eth1
iface eth0 inet static

auto eth2
iface eth2 inet static
up iptables-restore < /etc/ltsp/nat


# Default LTSP dhcpd.conf config file.


subnet netmask {
option domain-name "Edubuntu";
option domain-name-servers;
# option domain-name-servers;
option broadcast-address;
option routers;
# next-server;
# get-lease-hostnames true;
option subnet-mask;
option root-path "/opt/ltsp/i386";
if substring( option vendor-class-identifier, 0, 9 ) = "PXEClient" {
filename "/ltsp/i386/pxelinux.0";
} else {
filename "/ltsp/i386/nbi.img";


Generated by NetworkManager
search gtravesend gravesend.local

root at edubuntu-server:~# ip route dev eth2 proto kernel scope link src dev eth1 proto kernel scope link src metric 1 dev eth2 scope link metric 1000
default via dev eth1 proto static

/etc/hosts edubuntu-server.gravesend.local edubuntu-server # Added by NetworkM$ localhost.localdomain localhost
::1 edubuntu-server.gravesend.local edubuntu-server localhost6
# ::1 edubuntu-server localhost6.localdomain6 localhost6 edubuntu-server.gravesend.local edubuntu-server
# The following lines are desirable for IPv6 capable hosts
::1 localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts


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