IP forwarding on NT4

Hello all,

First time posting here, so please bear with me.

We've recently moved an office to an adjoining property, and we need to
connect the two lans so that they act as one. There is a wireless
connection between the two buildings. I'm attempting to use an NT4 box with
two nics to accomplish this. From that box I can see both networks, but
from the client machines I can only see the computers on their particular
segment. All the computers are on the same 10.0.0.x subnet, and I've
enabled IP forwarding.

Can anyone give me some detailed instructions on how to get the machines
from one segment to see the other? Any guidance would be appreciated as I
am up against the gun on this one, and I have no idea what I'm doing.

Thanks in advance,
Andy

Browsing relies on the server service to send a host name
announcement packet to a local SMB or segment master
browser. The SMB gathers the local browse list and passes
it on to the DMB or domain master browser. The DMB gathers
the entire list and passes back to all SMBs who then provide the
list to clients who request them. The DMB will also query WINS
in order to find other DMBs to get their domain wide browse list.
Each DMB/PDC registers a domain name 1b unique name for
domains with the WINS service. I'd start by verifying the 1b name
for the missing domain is present in WINS. Note: This whole process
also relies on NetBios broadcasts in order to work. Netbios should
not be filtered.
"Andy Williams" <f_u_b_a_r_1_1_1_9@y_a_h_o_o_._c_o_m> wrote in message
news:(E-Mail Removed)...
> Hello all,
>
> First time posting here, so please bear with me.
>
> We've recently moved an office to an adjoining property, and we need
to
> connect the two lans so that they act as one. There is a wireless
> connection between the two buildings. I'm attempting to use an NT4
box with
> two nics to accomplish this. From that box I can see both networks,
but
> from the client machines I can only see the computers on their
particular
> segment. All the computers are on the same 10.0.0.x subnet, and I've
> enabled IP forwarding.
>
> Can anyone give me some detailed instructions on how to get the
machines
> from one segment to see the other? Any guidance would be appreciated
as I
> am up against the gun on this one, and I have no idea what I'm doing.
>
> Thanks in advance,
> Andy
>
>

The browse list relies on netbios broadcasts which do not cross routers,
machines on each side of a router won't know about each other without a
naming service in place, and since you've made your NT 4 machine into a
router what you're asking for won't work. On top of that, you have further
problem trying to merge browse lists on a machine which is multi-homed.

Domain Browsing with TCP/IP and LMHOSTS Files
http://support.microsoft.com/support.../Q150/8/00.ASP

How Browsing a Wide Area Network Works
http://support.microsoft.com/support.../Q117/6/33.asp

Description of the Microsoft Computer Browser Service
http://support.microsoft.com/support.../Q188/0/01.ASP

Common Questions About Browsing with Windows
http://support.microsoft.com/directo...B;EN-US;Q13671

102878 - Information on Browser Operation:
http://support.microsoft.com/?id=102878

--
Todd J Heron, MCSE
Windows Server 2003/2000/NT

Thanks for the reply. But I haven't even gotten to that point yet. I guess
when I said "I can only see the computers on their particular segment," I
should have said I can only *ping* by IP address the computers on their
particular segment.

I'm really only trying to get to one mail server on the other side by IP
address, so I'm not really concerned with browsing by computer name. Any
ideas?

"Michael Giorgio - MS MVP" <(E-Mail Removed)> wrote in
message news:%(E-Mail Removed)...
> Browsing relies on the server service to send a host name
> announcement packet to a local SMB or segment master
> browser. The SMB gathers the local browse list and passes
> it on to the DMB or domain master browser. The DMB gathers
> the entire list and passes back to all SMBs who then provide the
> list to clients who request them. The DMB will also query WINS
> in order to find other DMBs to get their domain wide browse list.
> Each DMB/PDC registers a domain name 1b unique name for
> domains with the WINS service. I'd start by verifying the 1b name
> for the missing domain is present in WINS. Note: This whole process
> also relies on NetBios broadcasts in order to work. Netbios should
> not be filtered.
> "Andy Williams" <f_u_b_a_r_1_1_1_9@y_a_h_o_o_._c_o_m> wrote in message
> news:(E-Mail Removed)...
>> Hello all,
>>
>> First time posting here, so please bear with me.
>>
>> We've recently moved an office to an adjoining property, and we need
> to
>> connect the two lans so that they act as one. There is a wireless
>> connection between the two buildings. I'm attempting to use an NT4
> box with
>> two nics to accomplish this. From that box I can see both networks,
> but
>> from the client machines I can only see the computers on their
> particular
>> segment. All the computers are on the same 10.0.0.x subnet, and I've
>> enabled IP forwarding.
>>
>> Can anyone give me some detailed instructions on how to get the
> machines
>> from one segment to see the other? Any guidance would be appreciated
> as I
>> am up against the gun on this one, and I have no idea what I'm doing.
>>
>> Thanks in advance,
>> Andy
>>
>>
>
>

You could use lmhosts:

Domain Browsing with TCP/IP and LMHOSTS Files
http://support.microsoft.com/support.../Q150/8/00.ASP

"Andy Williams" <f_u_b_a_r_1_1_1_9@y_a_h_o_o_._c_o_m> wrote in message
news:
> Thanks for the reply. But I haven't even gotten to that point yet. I
guess
> when I said "I can only see the computers on their particular
segment," I
> should have said I can only *ping* by IP address the computers on
their
> particular segment.
>
> I'm really only trying to get to one mail server on the other side by
IP
> address, so I'm not really concerned with browsing by computer name.
Any
> ideas?

I'm sorry for not stating my question clearly. My problem is not about
naming... I'll cross that road when I get to it, and your posts along with
Todd's will surely help.

But my problem at hand right now is that I cannot ping from one segment to
the other. I've read several posts about this and everyone seems to act
like it is a no brainer. But it's not working for me at all.

"Michael Giorgio - MS MVP" <(E-Mail Removed)> wrote in
message news:(E-Mail Removed)...
> You could use lmhosts:
>
> Domain Browsing with TCP/IP and LMHOSTS Files
> http://support.microsoft.com/support.../Q150/8/00.ASP
>
> "Andy Williams" <f_u_b_a_r_1_1_1_9@y_a_h_o_o_._c_o_m> wrote in message
> news:
>> Thanks for the reply. But I haven't even gotten to that point yet. I
> guess
>> when I said "I can only see the computers on their particular
> segment," I
>> should have said I can only *ping* by IP address the computers on
> their
>> particular segment.
>>
>> I'm really only trying to get to one mail server on the other side by
> IP
>> address, so I'm not really concerned with browsing by computer name.
> Any
>> ideas?
>
>

Okay no problem. The fact that you cannot ping suggests a NIC,
cable, or routing problem. Assuming the machines can ping to
the clients on it's own subnet you can rule out NIC and Cable
which leaves us routing. You mentioned they are all on the
same subnet? In any case have a look at the following examples
of how to use NT as a router:


http://www.unknownegg.org/tech/NT-Router--2-Subnets.htm

"Andy Williams" <f_u_b_a_r_1_1_1_9@y_a_h_o_o_._c_o_m> wrote in message
news:
> I'm sorry for not stating my question clearly. My problem is not
about
> naming... I'll cross that road when I get to it, and your posts along
with
> Todd's will surely help.
>
> But my problem at hand right now is that I cannot ping from one
segment to
> the other. I've read several posts about this and everyone seems to
act
> like it is a no brainer. But it's not working for me at all.

That is essentially the setup I have, except everything is on the 10.0.0.x
subnet. Could that be the problem? Should I put the other segment on
10.0.1.x?


"Michael Giorgio - MS MVP" <(E-Mail Removed)> wrote in
message news:(E-Mail Removed)...
> Okay no problem. The fact that you cannot ping suggests a NIC,
> cable, or routing problem. Assuming the machines can ping to
> the clients on it's own subnet you can rule out NIC and Cable
> which leaves us routing. You mentioned they are all on the
> same subnet? In any case have a look at the following examples
> of how to use NT as a router:
>
>
> http://www.unknownegg.org/tech/NT-Router--2-Subnets.htm
>
> "Andy Williams" <f_u_b_a_r_1_1_1_9@y_a_h_o_o_._c_o_m> wrote in message
> news:
>> I'm sorry for not stating my question clearly. My problem is not
> about
>> naming... I'll cross that road when I get to it, and your posts along
> with
>> Todd's will surely help.
>>
>> But my problem at hand right now is that I cannot ping from one
> segment to
>> the other. I've read several posts about this and everyone seems to
> act
>> like it is a no brainer. But it's not working for me at all.
>
>

Yes if you plan to route between the subnets they should be on
different subnets although you should be able to use the wireless
connection as a bridge.. Can you give some details of your
wireless connection?

"Andy Williams" <f_u_b_a_r_1_1_1_9@y_a_h_o_o_._c_o_m> wrote in message
news
> That is essentially the setup I have, except everything is on the
10.0.0.x
> subnet. Could that be the problem? Should I put the other segment on
> 10.0.1.x?

I just got back from the other office, I changed their subnet to 10.0.1.x
and all is well. Thanks for your help!

If you're curious the wireless setup, it is a USR 5450 access point on this
end and a 5430 bridge on their end with 5482 9dBi antennas on both sides.
About 1000 feet apart. Works great...

Next I'll have to tackle the browsing issue. The articles you provided
should be a great help.

Thanks again.

Andy

"Michael Giorgio - MS MVP" <(E-Mail Removed)> wrote in
message news:(E-Mail Removed)...
> Yes if you plan to route between the subnets they should be on
> different subnets although you should be able to use the wireless
> connection as a bridge.. Can you give some details of your
> wireless connection?
>
> "Andy Williams" <f_u_b_a_r_1_1_1_9@y_a_h_o_o_._c_o_m> wrote in message
> news
>> That is essentially the setup I have, except everything is on the
> 10.0.0.x
>> subnet. Could that be the problem? Should I put the other segment on
>> 10.0.1.x?
>
>