Could not connect to RD within same IP Range.

Discussion in 'Server Networking' started by Kln Inc, Jan 3, 2006.

  1. Kln Inc

    Kln Inc Guest

    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, Jan 3, 2006
    #1
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  2. Two networks located in two different geographical locations both running
    the same TCP/IP "segment" can never connect to each other over the Internet.
    The Internet is a Layer3 routed network and each "hop" along a particular
    path is always a different TCP/IP Segment.

    They could connect over a Private Leased Line (doesn't use the Internet)
    that is running the routers in "Bridged Mode",...but there is no indication
    that this is what you are dealing with.

    VPN won't help,...VPN needs the two "ends" to be different TCP/IP Segments.
    VPN also expects the VPN Device to have one public Interface and one Private
    Interface. This also implies that the LAN is expected to be separated from
    the Public Internet and exist within a Private Network running RFC Private
    Addresses (which you aren't).

    --
    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
     
    Phillip Windell, Jan 4, 2006
    #2
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  3. Kln Inc

    Kln Inc Guest

    Thanks a lot for you answer! I posted several messages in different forums
    but they seem to have problem even in understanding my problem and
    eventually I did not get any help from them. Also, I would like to clarify
    onething form you, please. You told me different "geographical" location?
    These 2 IPs are using in office. As I mentioned, one is for my Desktop PC
    and another to Laptop while I am in office. Does it ring any bell? If still
    your answer is No, then is there a way I can get this working? Please let me
    know if you would like further explaination. Thanks a ton for your help!

    Thanks,
    KLN.

     
    Kln Inc, Jan 10, 2006
    #3
  4. Ooohhh, yes. The head ache is starting :)
    I'm sorry, what you are doing is no more clear to me than the first time you
    explained it. Unless I get a drastic re-understanding of what you
    have,...my last answer is still the answer.

    --
    Phillip Windell [MCP, MVP, CCNA]
    www.wandtv.com
     
    Phillip Windell, Jan 10, 2006
    #4
  5. Kln Inc

    Kln Inc Guest

    I am sorry if I caused any confusion. Here is the clear picture.


    office Desktop PC
    (12.36.126.68 / Static IP / T1 Line)
    |
    _______|_______
    | |
    From Home From Office <===
    Laptop
    (WLAN / Dynamic IP) (12.36.126.70/Static IP/T1)
    From home ==> I am able to RD to Office Desktop PC
    From Office ==> Unable to RD to desktop PC. Not even able to Ping it.

    Two static IPs are in Same Subnet as Mentioned earlier. When I come to
    office, I just plugin the T1 Cable thats it. I don't do anything else.
    Please let me know if you would like any further clarification.

    Thanks a ton!

    Regards,
    KLN.


     
    Kln Inc, Jan 10, 2006
    #5
  6. There isn't anything I can do with this.

    --
    Phillip Windell [MCP, MVP, CCNA]
    www.wandtv.com

     
    Phillip Windell, Jan 11, 2006
    #6
  7. Kln Inc

    Kln Inc Guest

    You mean, you did not understand the information?
    Pelase let me know. I will provide you more info.

    Thanks,
    KLN.
     
    Kln Inc, Jan 11, 2006
    #7
  8. Yes.
    I do not even know what to ask for anymore.

    All I know is that you have
    1. a network at the office
    2. a network at home
    3. a T1 floating around somewhere (no idea if it is Private or Internet)
    4. there is a desktop machine at the office that a laptop can connect to
    from home
    but not when the laptop is in the office

    I don't know what you mean by " I just plugin the T1 Cable thats it" since
    you don't connect/disconnect T1 lines "at will" like that especially
    considering that both ends of a T1 go into a CSU/DSU and have nothing to do
    with what you do with the laptop.

    That is it. There is nothing I can do with that, and at this point I don't
    even know what to ask for.

    --
    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
    -----------------------------------------------------
     
    Phillip Windell, Jan 11, 2006
    #8
  9. Kln Inc

    Kln Inc Guest

    Sorry! Here is furuther more clear explaination.

    There is no LAN or any Network in office.
    I am given 2 static IPs to my office by ISP.
    12.36.126.68 and 12.36.126.70.

    12.36.126.68 this IP is assigened to a Desktop in office. I enabled RD in it
    and my team from India uses this Desktop using that IP. Its open to public.
    Another IP (12.36.126.70) is used to my Laptop when I come to office. I have
    a cable from a port (Just Like telephone cable), which seems to be from
    Router or something which I don't know. (This is also a case with Desktop).
    I just plug in that cable to my Laptop to get the internet connection. This
    is also public IP and evryone can RD to my Laptop.

    I use the same Laptop at both Office and Home. In home I have WLAN. So some
    dynamic IP is assigned and I am able to RD to Desktop PC in office. While I
    use the Laptop in office, i.e when I use another IP (12.36.126.70), I am
    unable to RD to Desktop PC, and I am even unale to Ping it.

    To put it simply, the problem is: I am unable to ping / Rd to my Desktop PC
    from my Laptop which are using two Public IPs as mentioned above. But My RD
    and Laptop are accessible to Public.

    Hope this gives you clear idea.

    YES. RIGHT.

    Thank you so much for your patience and help!

    Regards,
    KLN.

     
    Kln Inc, Jan 11, 2006
    #9
  10. Ok, that is much better. I understand what you are doing now. Nothing comes
    to mind at the moment as to the cause, but it is late in the day and I'm
    ready to head out of here. Let me think about it and get back in the
    morning. Of course someone else may have an idea and jump in too, now that
    the situation is more clearly explained,..and that would be fine. So I'll
    check it out again in the morning if someone hasn't solved it by then.

    What is the Subnet Mask and Default Gateway that goes with those two public
    IP#s?

    --
    Phillip Windell [MCP, MVP, CCNA]
    www.wandtv.com

     
    Phillip Windell, Jan 11, 2006
    #10
  11. Kln Inc

    Kln Inc Guest

    Thank you So much!!!
    For both, Subnet and Default Gateways are same.
    Here are the details.

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

    Please let me know if you would like further details. Its really strange.

    Regards,
    KLN.


     
    Kln Inc, Jan 11, 2006
    #11
  12. Kln Inc

    Kln Inc Guest

    Hi Phillip,

    Did you get a chance to think about it? Please help me.
    Thanks a lot!

    Regards,
    KLN.

     
    Kln Inc, Jan 12, 2006
    #12
  13. Only one thing. This device at the office that you said you weren't sure if
    it was a router or not. It may be preventing the machine from communicating

    If I were you I would not even use ports in that manner on the "router". I
    would buy a simple cheap Hub or Switch and plug only it into the router then
    plug the PC's into the Switch/Hub. They would communicate via the Switch/Hub
    and not eve involve the "router". Also make sure that any "personal
    firewalls" are not getting in the way (Windows Firewall, Zone Alarm, etc)

    If that does not work, then I am at a total loss for suggestions. You would
    have to go to the people that rigged all this equipment up and sort it out
    with them. I have never seen anything setup this way (why it took so long
    to understand what you were describing),..I know I would never use anything
    this way.

    --
    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
    -----------------------------------------------------
     
    Phillip Windell, Jan 13, 2006
    #13
  14. Kln Inc

    Kln Inc Guest

    Thank you, Phillip. But everyone else is able to access Desktop PC directly
    with that IP. I am going mad why this problem only when I use another IP.
    Initially I thought its becuase IPs are in same Subnet as I am an novice in
    networking. I tired accessing directly with System Name. Nothing worked.
    However, thank you for you help. If you get anything in mind, pls let me
    know. Also, as those IPs are provided by ISPs I don't know what to do with
    them. I am just using them for my Internet connection. Thanks again.

    Regards,
    KLN.

     
    Kln Inc, Jan 13, 2006
    #14
  15. You said:
    -------------
    There is no LAN or any Network in office.
    I am given 2 static IPs to my office by ISP.
    12.36.126.68 and 12.36.126.70.
    -------------

    So there is no "everyone else" in the office, there is only the two
    machines. Eveyone else *outside* the office is irrelevant. You said that
    outside the office (eg. Home) it works fine. Whatever happens outside the
    office is totally separate from what happens inside the office,..the two
    have *no* bearing on each other. What I told in the last post about using a
    Hub or Switch is to deal with *inside*, and doesn't have anything to with
    with outside the office.

    --
    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
    -----------------------------------------------------
     
    Phillip Windell, Jan 13, 2006
    #15
  16. Kln Inc

    Kln Inc Guest

    Yes, Phillip. There are 2 machines that use those two static IPs. "Everyone
    else" I mean Public. So, Public can access both my Lap and Desktop with
    those IPs. Since both are public IPs, I am assuming both can connect to each
    as they are by Public. And yes, there is no Network. Each is assigned to one
    public IP. thats it. I am sorry if I am being vauge. Thank you!

    Regards,
    KLN.


     
    Kln Inc, Jan 13, 2006
    #16
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