Subject: Re: NAT translation for NETBIOS -
To: Alok Singh <>
From: Manuel Bouyer <>
List: netbsd-bugs
Date: 09/13/2002 19:15:50
On Fri, Sep 13, 2002 at 11:49:39AM +0530, Alok  Singh wrote:
> Hi,
>     I've my SOHO router running netbsd. I've NAT configured on the WAN
> interface.  I found that for no. of cases, netbios simply don't work. I'm
> listing a particular scenario below.
>                                                         --------
>              Win2K Server     WAN(NAT)  SOHO    LAN               Win2K
> server
>                                                         -----------
> If the LAN Win2k server is made to "Replicate" its entries to the WAN Win2k
> Server, the listing of replicated entries on the WAN Win2k Server, shows
> each entries with their Local IP addresses and also shows their owner as LAN
> Win2k Server with its Local IP address. Hence WAN Win2k server can trace the
> internal LAN IP address.
> I want to know the deployment scenario under which the NETBIOS works fine
> properly for the current BSD implementaion.

This seems to be a pure win2k issue. The NAT NetBSD router will just change
the IP address in the IP header, it won't do any special handling for
NETBIOS packets themselves.

Manuel Bouyer <>