[Samba] Windows can see Ubuntu netbios names but not access or even ping

Otto Krüse ottokruse at gmail.com
Wed Dec 10 10:26:51 GMT 2008

Thanks for the feedback. I am wondering indeed then how the local
master browser got wind of it..

I find out the cause and solution for the problem as well..  turned
out to be a firewall issue. The system is running Firestarter but also
Shorewall is installed. Now Shorewall is 'only' a utility to update
iptables policies and I hadn't actually run it so I figured my
iptables policy would have remained unchanged. But as it seems the
installation of shorewall already created some iptables policies... I
deleted them and set new policies to accept all (and let firestarter
do the firewalling) and now my windows pc resolves the netbios name of
the server again. Whoa!

Interesting to note is that name resolving from other linux machines
worked ok, e.g. wasn't affected by the iptables policies. Only windows
machines weren't able to pass through iptables policies for name
resolving. That's nasty I think, seems to me you would not expect this

Regards Otto

On Tue, Dec 9, 2008 at 10:09 PM, Volker Lendecke
<Volker.Lendecke at sernet.de> wrote:
> On Tue, Dec 09, 2008 at 03:21:37PM +0100, Otto Krüse wrote:
>> Here's the funny thing: when my I browse the local network on my
>> windows machine I can see the server (called ubuntuserver1). So
>> somehow my windows pc can resolve the name. But when I try to access
>> it (by double clicking) windows complains it cannot find the name.
>> Also ping ubuntuserver1 does not work.
> The fact that "ubuntuserver1" shows up in the list of
> machines in your workgroup does not mean that you can "see"
> it yourself. It means that your local master browser somehow
> got wind of it.
> Volker

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