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Ping Problem

Discussion in 'General Discussion' started by omcreations, Aug 17, 2013.

  1. omcreations

    omcreations Member

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    I have an issue that I haven't been able to figure out, and hoping that the cPanel forum might be able to help me out.

    I have 2 servers, I'll refer to them as server1 and server2. Both servers are 99% the same: Intel Xeon E3-1230, 8GB RAM, 1TB HDD, cPanel/WHM 11.38.2 (build 2), CSF. The only difference is that server1 is running CloudLinux.

    On server1 I had a couple of client sites that were unable to communicate with a 3rd party website. The website's IP address wasn't in CSF or cpHulk. If I attempt to ping the website or the IP, the connection just sits and eventually times out.

    However, on server2, and using command prompt on my laptop, I can ping the site with absolutely no problem.

    I checked with my datacenter, and they said that they don't block any IP addresses. I checked blacklists, and the IP isn't listed in any that I could find.

    Any suggestions?
     
  2. Infopro

    Infopro cPanel Sr. Product Evangelist
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    Twitter:

    Please elaborate on how they are connecting to the website.
     
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  3. GIANT_CRAB

    GIANT_CRAB Well-Known Member

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    Hi,

    Somethings you might want to do:
    • Check if ports used for the 3rd party connection is opened. (Maybe its on a port other than port 80)
    • Check your resolvers. If they fail, you might want to consider OpenDNS or Google DNS.
    • Whitelist the 3rd party IP addresses
     
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  4. omcreations

    omcreations Member

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    The connection was via a php script that my company developed. It was running fine, then one day out of the blue it just stopped being able to communicate on this one server. The second server is still working away fine.
     
  5. arunsv84

    arunsv84 Well-Known Member

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    Could you apply the following name servers in /etc/resolv.conf on the server having problem and see the results? Please make sure to comment the existing ones by using a " # " symbol in-front of name server (without quotes)

    Cheers!!!
     
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  6. GIANT_CRAB

    GIANT_CRAB Well-Known Member

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    He ignored my post, so its not resolvers' issue.
     
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  7. omcreations

    omcreations Member

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    I checked the resolvers, trying 8.8.8.8 and 8.8.4.4 and same issue.

    My second server is on the exact same network, and same resolvers, and it works fine, which is really perplexing.
     
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