Cannot ping computer on my LAN

This is a discussion on Cannot ping computer on my LAN within the Tech Board forums, part of the Community Boards category; More specifically I cannot ping my wife's computer. She is running Vista and I'm on XP. I installed the LLTD ...

  1. #1
    Super Moderator VirtualAce's Avatar
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    Cannot ping computer on my LAN

    More specifically I cannot ping my wife's computer. She is running Vista and I'm on XP.

    I installed the LLTD (Link Layer Topology garbage) on my XP box. Had to do it manually since the update erroneously stated the update was not needed and refused to install it.

    Anyways, she can see me and I can see her in our home network. Clicking on either computer in the network (respectively on each machine) results in a network path not found error.

    1. Both can ping the gateway.
    2. Both can ping the router.
    3. Both can ping the modem.
    4. Both can ping the internet IP of the modem.
    5. Both can ping the default gateway.
    6. Neither can ping each other's LAN IP.
    7. Neither can ping each other's computer name.

    tracert has similar results with 6 and 7 failing after 30 hops.

    I looked at an article about network tools on MS's site and it went over each of these. However it really did not say what to do to solve items 6 and 7.

    If we cannot ping each other does this also mean that games won't be able to see each other on our LAN?
    Last edited by VirtualAce; 07-25-2009 at 10:41 AM.

  2. #2
    C++まいる!Cをこわせ! Elysia's Avatar
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    Did you disable your firewall and see if it fixes the issue? Window's firewall is especially problematic and can cause problems like these.
    Other than that, is the Vista network configured to a Home network? If it's Work or Public, then it might block network visibility for example.
    Quote Originally Posted by Adak View Post
    io.h certainly IS included in some modern compilers. It is no longer part of the standard for C, but it is nevertheless, included in the very latest Pelles C versions.
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    You mean it's included as a crutch to help ancient programmers limp along without them having to relearn too much.

    Outside of your DOS world, your header file is meaningless.

  3. #3
    Super Moderator VirtualAce's Avatar
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    I set the Vista firewall exceptions to allow the network discovery and other pertinent items. My Comodo firewall is configured to allow requests from/to my local LAN. Quite a nice feature if you ask me.

    But to test I disabled both firewalls and still no pings. But this does not mean anything since most firewalls never truly 100% disable when you tell them to. If it was a firewall issue I would have thought neither PC would even show up on the network.

  4. #4
    C++まいる!Cをこわせ! Elysia's Avatar
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    Quote Originally Posted by Bubba View Post
    I set the Vista firewall exceptions to allow the network discovery and other pertinent items. My Comodo firewall is configured to allow requests from/to my local LAN. Quite a nice feature if you ask me.
    Yes. Yes, it is. I do agree.

    ...But this does not mean anything since most firewalls never truly 100% disable when you tell them to. If it was a firewall issue I would have thought neither PC would even show up on the network.
    You'd be surprised. I have known situations where I can find the computers (ie DNS resolution works), but pinging them was a no go.
    The Firewall is usually the problem in that case. But when you disable them, they just let in all traffic without blocking anything.
    But this is weird. You sure the router isn't blocking the pings, then? Most routers have an option to disable pings from outside, but I'm not so sure about local pings, but what if there's something in the router logs?

    Perhaps this calls for isolating the faulty component from the chain.
    Trying another router and a cross-network cable, perhaps.
    Last edited by Elysia; 07-25-2009 at 11:21 AM.
    Quote Originally Posted by Adak View Post
    io.h certainly IS included in some modern compilers. It is no longer part of the standard for C, but it is nevertheless, included in the very latest Pelles C versions.
    Quote Originally Posted by Salem View Post
    You mean it's included as a crutch to help ancient programmers limp along without them having to relearn too much.

    Outside of your DOS world, your header file is meaningless.

  5. #5
    Super Moderator VirtualAce's Avatar
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    Unfortunately due to the layout of my awesome residence I cannot isolate anything. It is a wireless network and my system is on the second story and hers is on the ground floor with the router on the second story. Awesome network I know.

    To connect a cable between my system and the router would require about 40 feet and to connect hers would be around 200 feet. To connect my system to hers would require about another 200 feet.

    The router is not blocking the pings AFAIK. But then I don't know much about it.

  6. #6
    (?<!re)tired Mario F.'s Avatar
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    I'm suspecting the router. I had a similar problem also with my wife's computer (what's with wives and vista, anyway!?). Can't remember exactly how I did it.

    But start by opening your router configuration page in your browser (or your router administration app if it ships with that type of software). You should have an option called "Block Anonymous Internet Requests" under Security or Firewall (Firewall if it's a Linksys). Disable it and reboot everything.
    Last edited by Mario F.; 07-25-2009 at 01:34 PM.
    The programmer’s wife tells him: “Run to the store and pick up a loaf of bread. If they have eggs, get a dozen.”
    The programmer comes home with 12 loaves of bread.


    Originally Posted by brewbuck:
    Reimplementing a large system in another language to get a 25% performance boost is nonsense. It would be cheaper to just get a computer which is 25% faster.

  7. #7
    Super Moderator VirtualAce's Avatar
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    Ahh...will try that.

    My wife got Vista b/c I wouldn't have it on my system. She seems happy with it so the fam is happy. It just makes it a pain for me to network the two systems but since she married a nerd she knows I'll figure it out eventually .

    Women dig nerds b/c nothing is worse than having Facebook, chat, or email not working right. Plus we buy all the cool new over-priced stuff.

    EDIT:
    Fixed it. Did what Mario suggested and also turned off AP isolation. Works like a charm. Now the computers see each other and can share files, etc. and games work just fine. Thanks for the help.
    Last edited by VirtualAce; 07-26-2009 at 04:04 PM.

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    In the Clint Eastwood movie Gran Torino (2008), in the trailer doesn't he always say: "Get off my LAN!!"

  9. #9
    Guest Sebastiani's Avatar
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    >> In the Clint Eastwood movie Gran Torino (2008), in the trailer doesn't he always say: "Get off my LAN!!"

    That was random!



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