Hi,

I have problems registering my NT workstation with a NT PDC.

I use the following configuration:

Linux PC with IPTABLES and VMware. Windows NT inside VMware (host only networking). To 
connect the NT with the outside world I am using NAT (SNAT and DNAT). My NT is 
accesible from the outside world (Ping , NetBios). From my NT PC I can map resources 
of the PDC. But I cannot create an account for my PC in the NT domain. I get the 
following error message:

"Domain controller for this domain can not be located"
The original IP address of the NT PC is: 172.16.200.142
The NAT IP address of the NT PC is: 200.6.69.142
The IP address of the PDC is : 172.25.107.13


tcpdump shows the following:

15:49:45.816039 200.6.69.142.netbios-ns > 172.25.107.13.netbios-ns:
>>> NBT UDP PACKET(137): QUERY; REQUEST; UNICAST
15:49:45.816967 200.6.69.142.netbios-ns > 172.25.107.13.netbios-ns:
>>> NBT UDP PACKET(137): QUERY; REQUEST; UNICAST
15:49:45.816926 172.25.107.13.netbios-ns > 172.16.200.142.netbios-ns:
>>> NBT UDP PACKET(137): QUERY; POSITIVE; RESPONSE; UNICAST
15:49:45.817893 200.6.69.142.netbios-dgm > 172.25.107.13.netbios-dgm:
>>> NBT UDP PACKET(138) Res=0x111A ID=0x858E IP=172 (0xac).16 (0x10).200 (0xc8).142 
>(0x8e) Port=138 (0x8a) Length=214 (0xd6) Res2=0x0
SourceName=SOP019          NameType=0x00 (Workstation)
DestName=
WARNING: Short packet. Try increasing the snap length

IPTABLES log shows the following:

Mar 18 15:51:19 mmiller kernel: IPTABLES (blanco,negro out): IN=vmnet1 OUT=eth1 
SRC=172.16.200.142 DST=172.25.107.13 LEN=256 TOS=0x00 PREC=0x00 TTL=127 ID=48132 
PROTO=UDP SPT=138 DPT=138 LEN=236
Mar 18 15:51:24 mmiller kernel: IPTABLES (blanco,negro out): IN=vmnet1 OUT=eth1 
SRC=172.16.200.142 DST=172.25.107.13 LEN=256 TOS=0x00 PREC=0x00 TTL=127 ID=48388 
PROTO=UDP SPT=138 DPT=138 LEN=236
Mar 18 15:51:24 mmiller kernel: IPTABLES (blanco,negro out): IN=vmnet1 OUT=eth1 
SRC=172.16.200.142 DST=172.25.107.13 LEN=256 TOS=0x00 PREC=0x00 TTL=127 ID=49156 
PROTO=UDP SPT=138 DPT=138 LEN=236
Mar 18 15:51:29 mmiller kernel: IPTABLES (blanco,negro out): IN=vmnet1 OUT=eth1 
SRC=172.16.200.142 DST=172.25.107.13 LEN=256 TOS=0x00 PREC=0x00 TTL=127 ID=49668 
PROTO=UDP SPT=138 DPT=138 LEN=236
Mar 18 15:51:29 mmiller kernel: IPTABLES (blanco,negro out): IN=vmnet1 OUT=eth1 
SRC=172.16.200.142 DST=172.25.107.13 LEN=256 TOS=0x00 PREC=0x00 TTL=127 ID=50436 
PROTO=UDP SPT=138 DPT=138 LEN=236
Does anybody have an idea?

Thanks in advance
Markus Miller
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