samba - Sep 2001 - Printing to a Samba Printer triggering a DNS lookup and dialling the modem

I have just joined the list and I have a problem, perhaps someone can
help.

I have:

Linux 7.0 with 2.4.7 Kernel (with various upgrades for functionality).
Samba is running on this machine with shares and a printer on the USB
port.
This machine also has a modem  (demand dialling) and I am using the
Monmotha Firewall script.


This works quite well for the WinME PC able to access the printer and
the modem.

I am very pleased with the way this hangs together...'cept:

When I print from the WinME machine to the samba printer on the linux
box, the modem dials.

I'm not sure where the problem lies or how to attack this.

It seems that the WinME machine tries to do a DNS lookup (DNS is
pointing outside the system) whenever the printer is used. Perhaps it is
trying to find the printer queue !!!

I'm guessing here, but if anyone has any suggestions I would be
grateful.

Is there any way to get netstat for example to trap and display all the
DNS requests rather than just snapshots as you get with the -c option?

I hope someone can help.
Doug Gray

I haven't seen any other takers so I will put in my two cents.
Have you tried tcpdump to look at the network traffic? Use grep -v to filter
out all the noise.
I don't use PPP or WinME, so, consider the source.
In my windows98 box, I have the option to tell windows to use various
techniques to find other machines, so I can choose not to use DNS from
windows. Can this be disabled in WinME? Putting the linux server into an
lmhost file might prevent DNS lookup up. Is there a way to make DNS lookup a
last resort? Have you a DNS server on your system? If not, consider
setting one up. It is a PAIN but educational. And, it may prevent WinME from
causing a dialout.
Can PPP be configured to ignore requests for the linux server?
BTW, the WinME box DOES print to the linux server, right?
Joel 
On Mon, Sep 17, 2001 at 11:39:23PM +1000, Doug Gray
wrote:
> I have just joined the list and I have a problem, perhaps someone can
> help.
> 
> I have:
> 
> Linux 7.0 with 2.4.7 Kernel (with various upgrades for functionality).
> Samba is running on this machine with shares and a printer on the USB
> port.
> This machine also has a modem  (demand dialling) and I am using the
> Monmotha Firewall script.
> 
> 
> This works quite well for the WinME PC able to access the printer and
> the modem.
> 
> I am very pleased with the way this hangs together...'cept:
> 
> When I print from the WinME machine to the samba printer on the linux
> box, the modem dials.
> 
> I'm not sure where the problem lies or how to attack this.
> 
> It seems that the WinME machine tries to do a DNS lookup (DNS is
> pointing outside the system) whenever the printer is used. Perhaps it is
> trying to find the printer queue !!!
> 
> I'm guessing here, but if anyone has any suggestions I would be
> grateful.
> 
> Is there any way to get netstat for example to trap and display all the
> DNS requests rather than just snapshots as you get with the -c option?
> 
> I hope someone can help.
> Doug Gray
> 
> 
> -- 
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