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Thread: Linux Duplicate pings

  1. January 14th, 2008, 04:47 PM #1
    bAgZ
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    Thumbs up Linux Duplicate pings

    I am just wondering if anyone has seen duplicate ping in Linux? I investigated a little bit and found that i get duplicate ping only from the DMZ range where the Linux box is and to one other specific range on across the VPN. I made sure that all interfaces on routers and firewalls have correct ip addressing and they do not have a broadcast IP. Any ideas are welcome. I also checked routing and everything is routed as it should be? Where could a problem be?
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  2. January 14th, 2008, 04:57 PM #2
    KorpDeath
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    Sounds like the VPN configuration could be pooched. Be sure you aren't pinging the broadcast ip of the range across the VPN.

    And what do you mean by
    Quote Originally Posted by bAgZ
    they do not have a broadcast IP
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  3. January 15th, 2008, 08:23 AM #3
    bAgZ
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    Definitely sure i that i am not pinging broadcast i checked and rechecked ranges assigned. There is about 4 different ranges that get traversed. My dmz is a 10.84.1.33/27 then it hits a next range 10.84.1.2/27 and then few routers and eventually when i ping 10.84.32.0/19 everything is good until i start pinging a sub range 10.84.48.0/24 then i get duplicates. This only happens on Linux. As soon as i NAT the machine in to come from 10.84.1.2/27 it looks good. So there seems to be a problem with dmz and 10.84.48.0/24. Weird but routing is 100%, between the two initially i thought there was a loop somewhere. Any ideas?
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