Hi, On Fri, 01 Dec 2006, Joseph Ollis wrote:
> I have a workgroup printer in my ltsp edubuntu computer lab(setup with
> the default two network cards, one connected to the school lan, and one
> connected to the switch for ltsp). I would like to share that printer
> with other computers within my school lan. The school computers use the
> 10.0.0.* ip addresses and the edubuntu ltsp clients are using the
> 192.168.13.*. I have used iptables before so I tried the following at
> our ltsp server.
>
> /sbin/iptables -t nat -A PREROUTING -p tcp -i eth0 --dport 9100 -j DNAT --to 192.168.13.234:9100
> /sbin/iptables -A FORWARD -p tcp -i eth0 -o eth1 --dport 9100 -j ACCEPT
>
> When I tried the printer setup on our XP machines, the setup worked
> well, but would not print the test page. I am not receiving iptables log
> errors in kern.log or dmesg.
In what sense did the setup work well if you couldn't print? ;-)
Are you definitely printing over jetdirect (ie port 9100)? If you run
something like:
tcpdump dst port 9100
it should show you all packets in and out on port 9100. Using:
tcpdump dst host 192.168.13.234
you should be able to see the rewritten packets.
> Does anyone have any thoughts?
I guess the above should work but could you not just set up a CUPS print
queue on the Edubuntu server and point the 10.0.0.0/24 machines at the
edubuntu server? I guess it adds a bit of a load to edubuntu, but not
much. You can also have cups preprocess print jobs.
Gavin
Thanks Gavin, using the tcpdump I figured out that I did not have Port
Forwarding enabled. I must have run into this problem 5-10 times,and I
always forget. Anyway, thank you for the help. A good article on how to
enable IP Forwarding is
http://www.ducea.com/2006/08/01/how-to-enable-ip-forwarding-in-linux/ .
JO
--
edubuntu-users mailing list
[email protected]
Modify settings or unsubscribe at:
https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
