WINS Server/Browsing help required

Ferris, Richard Richard.Ferris at
Tue Oct 16 04:30:04 GMT 2001

I've set-up a packet sniffer on a mirrored port that the WINS server is
attached to (local subnet).  Packets are coming through from the remote
subnet and the computer names are being registered in the WINS database -
however there are no packets being sent back from the WINS server and I
notice the same packets are sent through 5 times from the samba server -
which then seems to correspond with the 5 WINS timeout messages in the log:

register_name_timeout_response: WINS server at address is not

I've tested this with clients on the local subnet and the WINS server also
doesn't send packets back to them?  Could this be a problem with the WINS
server itself?

Thanks Again


-----Original Message-----
From: Inaki Sanchez [mailto:isanchez at] 
Sent: 13 October 2001 12:19
To: 'Ferris, Richard'
Cc: 'Samba mailing list'
Subject: RE: WINS Server/Browsing help required

> Hi there, thanks for the response.  I have added the IP address of the 
> domain master browser to the lmhosts file - now this seems to have 
> helped somewhat.  The nmbd log now contains a list of machines from
> the domain
> master browser on the* subnet and clients on the 
> new subnet can
> now browse everything!
> However I still get the message that the WINS server cannot
> be contacted.
> The WINS server is the domain master browser, so how come I 
> can get a browse
> list but no WINS connection?

Browsing uses UDP port 138 (and TCP 139 for browse lists syncronizations),
whereas all WINS stuff and name queries use UDP port 137. Have you checked
that UDP 137 packets can go from one net to another? It your clients at
local subnet, where the WINS server is, can register their names, then there
is probably a network problem.

> Another problem I have is that
> clients in the
> new subnet cannot find the domain controller when they logon 
> - however this
> is another issue!
> Thanks Again
> Richard

It could be the same problem: if your clients at remote subnet can't access
its WINS server, they won't be able to find its DC.

Good luck,

Inaki Sanchez 
Redes y Comunicaciones 
Universidad de Navarra, Spain    <> 
<mailto:isanchez at>    +34 948425600 

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