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Thread: Everything connects, except no web and no ping?

  1. #1
    Squeeler Vini's Avatar
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    Everything connects, except no web and no ping?

    Wierd problem set in over in our french office.

    2 machines can't get 'out' onto the web when connecting through ethernet, however switch them over to wireless and all is fine.

    It is most bizarre, and I've tried almost everything I can think of to resolve the problem...

    any ideas? upon firing up ie7 you get the res://ieframe.dll/dnserror.htm page. the problem is not tied to ie though, as ive tried:

    firefox
    renewing dhcp lease
    clearing dns
    reinstalling tcp ip
    resetting winsock settings
    uninstalling sophos
    disabling all firewall(s)
    manual ip configuration
    rebooting server
    rebooting switch
    rebooting modem
    safe mode
    + other things I cant think of right now.

    I'm at a loss as to what to try next - reinstalling windows is looking more likely.

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    radix lecti dave87's Avatar
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    Correct drivers installed?

    I know with my NF7S v2 - there were 2 drivers that would install, only one worked properly (minor revision somewhere or other)

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    can you see if you can get them to try and ping 17.112.152.32 (www.apple.com) and if that works, try http://17.112.152.32 in the web browser.

    does IE work? (worth a go to rule out FF being the problem)

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    TiG
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    Vini,

    I assume from what you've listed you've done you actually looked at a Tracert to say www.google.com. I mean all well and good doing all those tasks but lets try and indentify where the problem lies.

    I'm assuming the ethernet is connected to many other machines which have no problems, so i'd want to do a tracert on a machine that is working and try and establish the difference between the two.

    TiG
    -- Hexus Meets Rock! --

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    Squeeler Vini's Avatar
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    Quote Originally Posted by dave87 View Post
    Correct drivers installed?

    I know with my NF7S v2 - there were 2 drivers that would install, only one worked properly (minor revision somewhere or other)
    It has been working fine, the nic however has been uninstalled and reinstalled.

    Quote Originally Posted by lanceuppercut View Post
    can you see if you can get them to try and ping 17.112.152.32 (www.apple.com) and if that works, try http://17.112.152.32 in the web browser.

    does IE work? (worth a go to rule out FF being the problem)
    IE doesnt work, theres no getting out to the web from the machine.

    Quote Originally Posted by TiG View Post
    Vini,

    I assume from what you've listed you've done you actually looked at a Tracert to say www.google.com. I mean all well and good doing all those tasks but lets try and indentify where the problem lies.

    I'm assuming the ethernet is connected to many other machines which have no problems, so i'd want to do a tracert on a machine that is working and try and establish the difference between the two.

    TiG
    As above theres no getting out to the web from the machine. So tracert fails at step 1.

    Dtermination de l'itinraire vers www.l.google.com [72.14.221.147]
    avec un maximum de 30 sauts:

    1 * * * Dlai d'attente de la demande dpass.
    2 * * * Dlai d'attente de la demande dpass.
    3 * * * Dlai d'attente de la demande dpass.
    4 * * * Dlai d'attente de la demande dpass.
    5 * * * Dlai d'attente de la demande dpass.
    6 * * * Dlai d'attente de la demande dpass.
    7 * * * Dlai d'attente de la demande dpass.
    8 * * * Dlai d'attente de la demande dpass.
    9 * * * Dlai d'attente de la demande dpass.
    10 * * * Dlai d'attente de la demande dpass.

  6. #6
    Splash
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    So you're not even getting to the proxy? I assume you have some form of proxy in place?

    DNS clearly works, looks like routing to me - do other machines connected to the same switch work ok? If so are there any static routes setup on the machine?

  7. #7
    TiG
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    As splash says, the network card is working and whatever the DNS that is set on the ethernet adapter is working. Hence the DNS resolution of Google.

    What is the IPConfig on the machines ethernet adapter?, can you ping the default gateway? Has it got multiple Network cards in?

    TiG
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  8. #8
    Squeeler Vini's Avatar
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    Quote Originally Posted by Splash View Post
    So you're not even getting to the proxy? I assume you have some form of proxy in place?

    DNS clearly works, looks like routing to me - do other machines connected to the same switch work ok? If so are there any static routes setup on the machine?
    All other machines are on the same switch and work fine. No static routes setup

    Quote Originally Posted by TiG View Post
    As splash says, the network card is working and whatever the DNS that is set on the ethernet adapter is working. Hence the DNS resolution of Google.

    What is the IPConfig on the machines ethernet adapter?, can you ping the default gateway? Has it got multiple Network cards in?

    TiG
    The network card is fine as I can VNC in (i've reinstalled as mentioned though just to check), from the machine I can ping the default gateway.

    Suffixe DNS propre la connexion : domain.co.uk
    Description . . . . . . . . . . . : Carte rseau Realtek RTL8139
    Adresse physique . . . . . . . . .: <mac address>
    DHCP activ. . . . . . . . . . . : Oui
    Configuration automatique active . . . . : Oui
    Adresse IP. . . . . . . . .. . . : 192.168.1.28
    Masque de sous-rseau . . .. . . : 255.255.255.0
    Passerelle par dfaut . . .. . . : 192.168.1.1
    Serveur DHCP. . . . . . . . . . . : 192.168.1.100
    Serveurs DNS . . . . . . . . . . : 192.168.1.100 (server)
    194.2.0.20 (isp)
    194.2.0.50 (isp)
    Serveur WINS principal. . . . . .: 10.1.1.1
    Bail obtenu . . . . . . . .. . . : mercredi 25 avril 2007 13:20:02
    Bail expirant . . . . . . .. . . : jeudi 10 mai 2007 13:20:02
    It's a single NIC which has been working for about 2 years prior to this, which is whats more confusing.

    Below are the details of a similar, working, machine.

    Suffixe DNS propre la connexion : domain.co.uk
    Description . . . . . . . . . . . : Carte Fast Ethernet PCI SiS 900
    Adresse physique . . . . . . . . .: <mac address>
    DHCP activ. . . . . . . . . . . : Oui
    Configuration automatique active . . . . : Oui
    Adresse IP. . . . . . . . .. . . : 192.168.1.29
    Masque de sous-rseau . . .. . . : 255.255.255.0
    Passerelle par dfaut . . .. . . : 192.168.1.1
    Serveur DHCP. . . . . . . . . . . : 192.168.1.100
    Serveurs DNS . . . . . . . . . . : 192.168.1.100
    194.2.0.20
    194.2.0.50
    Serveur WINS principal. . . . . .: 10.1.1.1
    Bail obtenu . . . . . . . .. . . : mercredi 25 avril 2007 09:27:18
    Bail expirant . . . . . . .. . . : jeudi 10 mai 2007 09:27:18

    One other thing I dont think I've listed, is that I've done full AV/Spyware scans etc...

  9. #9
    Splash
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    If you can ping the default gateway why does it not show up in tracert? I'm assuming that

    "Dlai d'attente de la demande dpass."

    means "request timed out" or similar, my French is terrible these days. Tracert should go from local machine to default gateway to internet, so if it's not getting to the default gateway I don't really know what to suggest. Can you give a little more info on your network setup?

  10. #10
    TiG
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    So you can VNC into the machine that is broken?, yet it can't get out to the internet when you are on it?, or when someone else is?.

    Is this just HTTP traffic?, or have you tried any FTP or anything else? The Tracert is very wierd tho. That might be because you are on the machine via some VPN??.

    So we should be able to rule out anything on that machine really shouldn't we?. I mean if the network is working and you are successfully getting traffic over the card to use VNC, then there isn't going to be anythign wrong with pretty much the entire system network wise?.

    hmmm

    TiG
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  11. #11
    radix lecti dave87's Avatar
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    I may be way off, but have you checked the HOSTS file to see if anything has popped up in there that could be causing you problems?

  12. #12
    Squeeler Vini's Avatar
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    Quote Originally Posted by Splash View Post
    If you can ping the default gateway why does it not show up in tracert? I'm assuming that

    "Dlai d'attente de la demande dpass."

    means "request timed out" or similar, my French is terrible these days. Tracert should go from local machine to default gateway to internet, so if it's not getting to the default gateway I don't really know what to suggest. Can you give a little more info on your network setup?
    Well, we have a modem and a 24 port switch which goes out to sockets throughout the building. A server running 2003.

    It is by all means a kerazy problem.

    Quote Originally Posted by TiG View Post
    So you can VNC into the machine that is broken?, yet it can't get out to the internet when you are on it?, or when someone else is?.

    Is this just HTTP traffic?, or have you tried any FTP or anything else? The Tracert is very wierd tho. That might be because you are on the machine via some VPN??.

    So we should be able to rule out anything on that machine really shouldn't we?. I mean if the network is working and you are successfully getting traffic over the card to use VNC, then there isn't going to be anythign wrong with pretty much the entire system network wise?.

    hmmm

    TiG
    We can VNC in but this is through VPN as you say, this however, shows that the NIC and network functionality of their setup is working.

    Anything external is causing a problem, http, ftp anything.

    Quote Originally Posted by dave87 View Post
    I may be way off, but have you checked the HOSTS file to see if anything has popped up in there that could be causing you problems?
    Yep, clean as a whistle.

  13. #13
    Splash
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    Ok - you have a site-site vpn setup through Server 2003 runnin RRAS? How is internet traffic routed? (ie does it go straight out from site, or is it routed through VPN?)

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    Chaos Monkey Apex's Avatar
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    Looks like a proxy problem, it's set to auth by mac address am guessing, traffic via the wireless ok, traffic via the nic not.

    I would check to make sure the settings on the proxy / router of what ever you are using to share the connection is checked out



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    Squeeler Vini's Avatar
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    Quote Originally Posted by Splash View Post
    Ok - you have a site-site vpn setup through Server 2003 runnin RRAS? How is internet traffic routed? (ie does it go straight out from site, or is it routed through VPN?)
    Out at site.

    Quote Originally Posted by Apex View Post
    Looks like a proxy problem, it's set to auth by mac address am guessing, traffic via the wireless ok, traffic via the nic not.

    I would check to make sure the settings on the proxy / router of what ever you are using to share the connection is checked out
    Never had a problem before, IP lease hasn't changed.

    I'm out of the office today so things are on hold. A rebuild would have been quicker.

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