RE: Network problems

From: Thomas E. Dukes (edukes_at_alltel.net)
Date: 04/14/05

  • Next message: Les Mikesell: "Re: bochs vs. vmware" 
    To: "'Marc M'" <linuxr@gmail.com>, "'For users of Fedora Core releases'" <fedora-list@redhat.com>
Date: Thu, 14 Apr 2005 13:51:56 -0400

      _____

    From: fedora-list-bounces@redhat.com [mailto:fedora-list-bounces@redhat.com]
    On Behalf Of Marc M
    Sent: Thursday, April 14, 2005 1:38 PM
    To: For users of Fedora Core releases
    Subject: Re: Network problems

    Are the lights on, on the switch's ports that you are using? Have you
    rebooted the switch? Are you able to connect with other machines or ports
    (say a laptop)? Is the light working on the nic? Cabling good? If you
    have multiple nics you should stop/start them and see if you can get one to
    work, sometimes one works when another won't. service network stop, ifup
    eth0, ifup eth1, etc. Look at your dmesg and see whether it finds your
    eth0 or eth1, that'd be nice to know....
     
    Yes, the lights are on. I have rebooted the switch and modem numerous
    times. The lights are on the nics are on, too. I have swapped cables with a
    known good cable, same result. No PC connected to the network has internet
    connectivity either. I have connected two windoze pc's directly to the
    modem and they connect. I have connected the FC2 pc directly to the modem
    (tried each nic) but it won't connect.
     
    Looked at dmesg but do not see anything for eth0 or eth1.
     
    If you are able to narrow it down to the one FC2 box (and within the os),
    then I would say that lastly you should run a chkrootkit utility on the box
    to see if you have been own3d.
     
    What is own3d?
     
    Thanks

    Cheers
    Marc

    On 4/14/05, Thomas E. Dukes <edukes@alltel.net> wrote:

    Hello,

    This is strange! I don't even know where to start. Everything was working
    fine until yesterday about 1:00PM.

    I am running a FC2 system. I have a dynamic ip using ddclient to update. I
    run ifconfig and I have an ip address. I can ping it with no problem. I
    can ping other internal hosts. My ip is current with my dynamic dns
    provider.

    I have changed out network cards and even bought a new switch. Still no
    internet connectivity. DSL modem works fine as it is currently connected to

    this PC. So its not an ISP or modem problem.

    I have not updated any packages since 04-01-05. I have been out of town ten
    days and was able to access my server remotely, even yesterday morning. I
    have made no changes to any files. Internet connectivity just stopped.

    Any ideas where to begin? I have been looking over logs and don't see
    anything wrong.

    TIA 

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