Could not connect to RD from same IP Range

  • Thread starter Thread starter Kln Inc
  • Start date Start date
K

Kln Inc

I would really appreciate if you could help me out with my current RD
problem.

I have 2 static IPs one assigned to my Desktop and another one to my Laptop.
While I am in office, I use static IP and whlie in home I use Wireless. Both
Subnet and Default Gateway are same for these 2 static IPs. I am able to
connect to the Desktop RD from my home through my Laptop. But I could not
connect when I use the another Static IP (which I use when I am in office).
I am not even able to Ping from each of these machines. My Remote Desktop is
accessible to everyone in my Team including me when I am in my Home. But I
don't know why I am unable to access this RD when I use another Static IP
which has same Subnet and Default Gateway. I don't know whether this is a
problem or something else I need to look into. Could you please help me out
in this? I direly need this working. I must be able to access RD from my
Laptop when I use another IP.

IPs are like
12.36.126.68
12.36.126.70

Subnet: 255.255.255.0 for both
Default Gateway: 12.36.126.9 for both.

Please help me!!! Thanks a bunch!!

Thanks,
KLN.
 
Kln Inc said:
I would really appreciate if you could help me out with my current RD
problem.

I have 2 static IPs one assigned to my Desktop and another one to my Laptop.
While I am in office, I use static IP and whlie in home I use Wireless. Both
Subnet and Default Gateway are same for these 2 static IPs. I am able to
connect to the Desktop RD from my home through my Laptop. But I could not
connect when I use the another Static IP (which I use when I am in office).
I am not even able to Ping from each of these machines. My Remote Desktop is
accessible to everyone in my Team including me when I am in my Home. But I
don't know why I am unable to access this RD when I use another Static IP
which has same Subnet and Default Gateway. I don't know whether this is a
problem or something else I need to look into. Could you please help me out
in this? I direly need this working. I must be able to access RD from my
Laptop when I use another IP.

IPs are like
12.36.126.68
12.36.126.70

Subnet: 255.255.255.0 for both
Default Gateway: 12.36.126.9 for both.

Please help me!!! Thanks a bunch!!

Thanks,
KLN.
Click to expand...

I've read your post three times and I still cannot figure out what
you're trying to say. I suggest you rephrase your post, e.g.
like so:
================
Office desktop: 12.36.126.68
Office laptop: 12.36.126.70

While in the office, I can use my laptop to run a Remote
Desktop session on my office desktop.

While using my laptop from home, I cannot reach my
office desktop.

I know the external address of my office network and
I have set up the following tunnel on my office firewall:

Port xxx, IP address ...
================
Now fill in the appropriate words and someone will try to
answer your question.
 
Thank you for your response. Here is this

Office desktop: 12.36.126.68 (Static IP)
laptop: 12.36.126.70 (This Static IP when I use the Laptop in office. While
in home I use WLAN)

While in the HOME, I can use my laptop to run a Remote
Desktop session on my office desktop.

While using my laptop from OFFICE, I cannot reach my
office desktop.

I know the external address of my office network and
I have set up the following tunnel on my office firewall:

Thanks again for your help!

Regards.
 
OK, this is a lot clearer. I recommend you run this test:

- Connect the laptop to the office network.
- Start a Command Prompt.
- Type these commands:
ipconfig /all Make a note of the response.
ping 12.36.126.68 Do you get a response?
telnet 12.36.126.68 3389 Do you get a connection?

If you do not get a connection, type the same commands
from another PC in the office, then compare the responses
from the ipconfig command.
 
I am sorry if I was vague. As per my email below, I have static IP provided
by ISP that I assign to Laptop (12.36.126.70) while in Office. I have
another static IP (12.36.126.68) by ISP that is assigned to Desktop.
However, I tried the following command from Laptop. But none seems to return
anything. Please let me know if you need further explaination. I am able to
login to RD from Home. But not from office. I don't have any other network
in office. Just 2 static IPs one for Laptop and another for Desktop both are
provided by ISP. Please help me out!

Thanks a ton!

Regards.
 
- Connect your laptop to the office PC.
- Start a Command Prompt.
- Type these commands:
ipconfig /all > c:\ip.txt
notepad c:\ip.txt
- Paste the text into your reply.

Repeat this sequence for your office PC and
for one of the other office PCs, and paste the
text into your reply for each of them.
 
Here is the output from my Laptop:
========
Windows IP Configuration
Host Name . . . . . . . . . . . . : mylaptop
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No


Ethernet adapter Wireless Network Connection:
Media State . . . . . . . . . . . : Media disconnected
Description . . . . . . . . . . . : Broadcom 54g MaxPerformance 802.11g
Physical Address. . . . . . . . . : 00-90-4B-51-6F-72



Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek RTL8139 Family PCI Fast
Ethernet NIC
Physical Address. . . . . . . . . : 00-C0-9F-35-AA-15
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 12.36.126.70
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 12.36.126.9
DNS Servers . . . . . . . . . . . : 12.127.16.67
12.127.17.71
============
Connect your laptop to the office PC.
Click to expand...
This is what the actual problem. I am unable to connect.

Here is the output from my Office Desktop PC: (I went to the Desktop and
copied this)
Office desktop PC:
===========
Windows IP Configuration
Host Name . . . . . . . . . . . . : officedesk
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Unknown
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : HP EN1207D-TX PCI 10/100 Fast
Ethernet Adapter
Physical Address. . . . . . . . . : 00-10-B5-69-46-9F
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 12.36.126.68
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 12.36.126.9
DNS Servers . . . . . . . . . . . : 12.127.16.67
12.127.17.71
==========
Also, I think you can ping these both the IPs.

Please let me know if you would like further details. Thank you so much!

Regards.
 
That's two out of three. What about the output from
one of the other office PCs, one that can establish
a Remote Desktop connection to your own desktop
PC?

Also: Do you have a firewall on your own Desktop PC?
If yes, turn it off while testing.
 
There are only two. One Desktop and One Laptop.
I use Laptop at both Home and Office. Office PC doesn't have firewall I
guess. Because, I am able to establish RD to it from HOME using my Laptop.
To be more clear, I use SAME Laptop at both Office and Home. But in office I
use Static IP for the Laptop and in home I use WLAN.

Please let me know if you need further details.

Regards.
 
I thought you had tree machines.

Fine, let's do some tests while both machines are in the
office. Start a Command Prompt: on the laptop then
type this:
ping officedesk
ping 12.36.126.68
ping 12.36.126.9

On the desktop type this:
ping mylaptop
ping 12.36.126.70
ping 12.36.126.9

then report the results.
 
I'd like to back up a ways. Something here still doesn't sound right to
mel. Maybe I just don't understand the situation, but here are the "red
flags" in my mind.

How can two networks use the same IP Range and expect to work? If Home and
Office use the same IP Range that doesn't make them work,...it makes them
"not" work.

The addresses mentioned are Public IP#s,...they can only function on the
network that "owns" them as assigned by the ISP (like the Office). They can
not be "reused" on another network (like Home) and expect that they will
somehow be routed by an ISP to the network that "owns" them from a network
that does "not" own them. Even if it is the same ISP for both networks,
they would still need to be different IP "segments" for routing to function.

I saw "tunnel" mentioned a time or two but it is not clear if there is a
real VNP Tunnel or if the term is just simply being improperly used and just
tossed around without any real meaning. A VPN Tunnel requires at least 3
networks (2 Private with 1 Public between them),...yet all that appears to
be here is just 1 network based on the TCP/IP config that is "split" between
two geographical regions with a Public routed Internet between them with no
hope of them ever communicating.

Maybe I'm wrong, and that's fine, no problem. But these things just aren't
sitting right with me with what I have been able to derive from the
confusing posts.

--
Phillip Windell [MCP, MVP, CCNA]
www.wandtv.com
-----------------------------------------------------
Understanding the ISA 2004 Access Rule Processing
http://www.isaserver.org/articles/ISA2004_AccessRules.html

Microsoft Internet Security & Acceleration Server: Guidance
http://www.microsoft.com/isaserver/techinfo/Guidance/2004.asp
http://www.microsoft.com/isaserver/techinfo/Guidance/2000.asp

Microsoft Internet Security & Acceleration Server: Partners
http://www.microsoft.com/isaserver/partners/default.asp

Deployment Guidelines for ISA Server 2004 Enterprise Edition
http://www.microsoft.com/technet/prodtechnol/isa/2004/deploy/dgisaserver.mspx
 
I am sorry if I caused the confusion again. Let me explain a bit more
clearly.

Those two static IPs are given by ISP (I guess T1 lines). One is assigned to
my office Desktop PC. Another one is assigned to my Laptop only when I am in
office. (Just I plug the cable to my Laptop when I get into office. thats
it.). When I am working from home using my Laptop I use Wireless connection.
And from home I am able to connect to my Office Desktop PC and RD to it. But
when I come to office and plug the cable (i.e using the second Second IP T1
line), I am unable to connect to the Desktop PC. Even I am unable to Ping
each other. This is the problem. I need to connect to office Desktop PC
through RD even when I am in office i.e when I use another static IP.

Office PC (12.36.126.68 / Static IP / T1 Line)
|
_______|_______
| |
Laptop: From Home From Office (12.36.126.70 / Static IP / T1
Line)
(WLAN / I think some DHCP)


From home ==> I am able to RD to Office Desktop PC
From Office ==> Unable to RD to desktop PC.

Please let me know if you need further explaination. Please help me out.
Thanks a ton!

Regards.

Phillip Windell said:
I'd like to back up a ways. Something here still doesn't sound right to
mel. Maybe I just don't understand the situation, but here are the "red
flags" in my mind.

How can two networks use the same IP Range and expect to work? If Home
and
Office use the same IP Range that doesn't make them work,...it makes them
"not" work.

The addresses mentioned are Public IP#s,...they can only function on the
network that "owns" them as assigned by the ISP (like the Office). They
can
not be "reused" on another network (like Home) and expect that they will
somehow be routed by an ISP to the network that "owns" them from a network
that does "not" own them. Even if it is the same ISP for both networks,
they would still need to be different IP "segments" for routing to
function.

I saw "tunnel" mentioned a time or two but it is not clear if there is a
real VNP Tunnel or if the term is just simply being improperly used and
just
tossed around without any real meaning. A VPN Tunnel requires at least 3
networks (2 Private with 1 Public between them),...yet all that appears to
be here is just 1 network based on the TCP/IP config that is "split"
between
two geographical regions with a Public routed Internet between them with
no
hope of them ever communicating.

Maybe I'm wrong, and that's fine, no problem. But these things just aren't
sitting right with me with what I have been able to derive from the
confusing posts.

--
Phillip Windell [MCP, MVP, CCNA]
www.wandtv.com
-----------------------------------------------------
Understanding the ISA 2004 Access Rule Processing
http://www.isaserver.org/articles/ISA2004_AccessRules.html

Microsoft Internet Security & Acceleration Server: Guidance
http://www.microsoft.com/isaserver/techinfo/Guidance/2004.asp
http://www.microsoft.com/isaserver/techinfo/Guidance/2000.asp

Microsoft Internet Security & Acceleration Server: Partners
http://www.microsoft.com/isaserver/partners/default.asp

Deployment Guidelines for ISA Server 2004 Enterprise Edition
http://www.microsoft.com/technet/prodtechnol/isa/2004/deploy/dgisaserver.mspx
-----------------------------------------------------



Pegasus (MVP) said:
That's two out of three. What about the output from
one of the other office PCs, one that can establish
a Remote Desktop connection to your own desktop
PC?

Also: Do you have a firewall on your own Desktop PC?
If yes, turn it off while testing.
Click to expand...
Click to expand...
 
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