Hello,
I'm facing up the following problem:
We have 2 LAN's. They are connected through Firewall on which NAT is
enabled. We are using Windows NT server and WIndows 95 As main OS
platform. Some MS Windows based applications are using NBT (Netbios over
TCP/IP). When such a application generates packet which goes through
Firewall, NAT rules are applied on it. But the NAT is done only on IP
header of packet not on NBT part of packet. This situation generates
sonfusing state - IP header of packet says something else then NBT part
of packet. We have faced up such a situation with NetBios Name Service
(137/udp) and NetBios datagram service (138/udp).
For example we have tried to make trusts between 2 NT Domains. The NT
domains are separated byt firewall with NAT. When trying to make a
trust, Domain Controlers are querying for name of the domain controler
in other domain. The query is done by nbname service (137/udp). Domain
controllers are confused between inconsistency between IP and NBT part
of header.
Does any one of YOU face up same problem?
Is there some tool for NBT NAT?
Best regards
Ondra Girch
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