Tim,
Windows uses NetBIOS to do it's file and printer sharing, as well as remote
administration, so be careful when allowing it through a firewall.
I believe you will need to use a NAT device that is "NetBIOS aware", because
the source IP address is contained in the packet payload, so NAT causes the
address to mismatch. However, I have never tried it. The ports that NetBIOS
uses are:
TCP 137 for the name service
TCP 138 for the datagram service.
TCP 139 for the session service.
The UDP versions of these ports are also listed as used by NetBIOS, but I'm not
sure if they are actually used.
Good Luck
Jim Eckford
Tim Uckun wrote:
> I need to mount a drive from a NT machine inside a NATed firewall to an NT
> machine outside the network. Does anybody have a pointer on dealing with NT
> specific problems when dealing with firewall. Anybody know which ports an
> NT machine uses for PDC/BDC traffic or drive sharig?
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