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Server can ping only same subnet

Discussion in 'Security' started by grapechoi, Nov 25, 2010.

  1. grapechoi

    grapechoi Registered

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    Hi all,
    Yester day I had very strange experience.

    One of our server alerted as down.
    I was able to access to the server with remote console.
    Also I could ping and ssh to the server from the other server which is on same subnet.

    Routing table is correct and pointing correct IP of default gateway.
    It could see eachother only on same subnet servers but not going our beyond default gateway.

    I resolve this issue to reinstall csf on the server.
    Anyone know why this happen on one of our servers?
    Kernel is up to dated.
    Any comment much appreciate.
     
  2. syslint

    syslint Well-Known Member

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    Twitter:
    Hello,

    It may be blocked in the router , You need to contact your DC support
     
  3. grapechoi

    grapechoi Registered

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    Hi syslint,
    I found the problem.
    The server doesn't get DG MAC on server arp table.
    Problem solved after refresh arp table.
     
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