Re: absurdly simple LAN problem

From: Thomas Adam (thomas_adam16_at_yahoo.com)
Date: 09/15/05

  • Next message: Joachim Fahnenmüller: "Re: Unable to access to a cd burned with xcdroast" 
    Date: Thu, 15 Sep 2005 15:54:35 +0100 (BST)
To: Anthony Campbell <ac@acampbell.org.uk>, debian-user@lists.debian.org

    --- Anthony Campbell <ac@acampbell.org.uk> wrote:

    > I've struggled with this one for months! Much perusing of HOWTOs and
    > googling hasn't helped.

    I'm not surprised, as it's quite a specific issue, and doesn't really
    illustrate any one possible point of failure.
     
    > I have two computers, desktop and laptop, and a wireless router and
    > ADSL
    > modem. Both machines reach the internet without problems, one via a
    > cable link to the modem, the other via a wireless link to the
    > router.

    OK, so that at least proves that you have a default gateway setup OK.

    > However, they do not communicate with each other. I cannot ping from
    > one
    > to the other though I can ping localhost on each. Turning off the
    > firewall (shorewall) does not help.

    Then you should use the command:

    traceroute <IP>

    To at least see where the point of failure is likely to be.
    Furthermore, when asking questions like this, it is often handy to
    include the output (or at least a link to it) of the:

    route -n

    command, from BOTH machines, as well as:

    ifconfig -a

    from BOTH machines.

    > I've tried adding the appropriate IP values (192.168.0.20 and
    > 192.168.0.22) to the respective /etc/hosts and /etc/hosts.allow, but
    > it
    > makes no difference.

    They're not used to ping raw IP addresses anyway. I suppose at an
    outside edge, you could check your /etc/nsswitch.conf to make sure that
    the values listed there are sane, however, I suspect that it's more a
    routing issue on your part. Certainly the output from the commands
    I've requested will help.

    -- Thomas Adam

                    
    ___________________________________________________________
    To help you stay safe and secure online, we've developed the all new Yahoo! Security Centre. http://uk.security.yahoo.com 

    -- 
To UNSUBSCRIBE, email to debian-user-REQUEST@lists.debian.org 
with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org
  • Next message: Joachim Fahnenmüller: "Re: Unable to access to a cd burned with xcdroast"

    Relevant Pages

    • Re: Churchills attitude towards Australia
      ... Australia asked for assistance. ... Australians under their command in New Guinea to clear up the Japanese ... like the failure to rein in MacArthur or resolve the Army-Navy ... stated war aims as evidence of "national failure". ...
      (soc.history.war.world-war-ii)
    • Re: MacBook Pro - no bluetooth
      ... although I'm intrigued by this 'breaking news' thing. ... machines back after waiting so long, then at least some of them called ... Let me down with a drive failure after three ... I think for day to day shifting around reliability the MacBooks are the ...
      (uk.comp.sys.mac)
    • Summary: Changes to mv in upgrade from 5.1 to 5.1b?
      ... Tim was able to duplicate this bug on his own machines testing between 5.1 ... As far as whether this was an intentional change on HP's part or a bug, ... Some of our scripts are now failing with the "mv" command with an error I ...
      (Tru64-UNIX-Managers)
    • Re: How fault tolerant can Linux be?
      ... CPU failure is rare, and machines that support CPU hot-swap are also rare, ... The big problem with PSU failures is that they don't necessarily fail ... so you have to cluster. ...
      (comp.os.linux.hardware)
    • Re: send command
      ... xhost table in order to use the tcl "send" command. ... your display to any app you have rights to start. ... machines you need to run X apps on. ...
      (comp.lang.tcl)