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VERY strange issue

Discussion in 'General Discussion' started by ukdeveloper, Dec 16, 2008.

  1. ukdeveloper

    ukdeveloper Member

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    I have a cpanel VPS (running csf and lfd).

    Some of my customers are complaining that they cannot see their websites or ANY other site on the server or even login to cpanel etc (basically they cannot hit the server, either by ping or tracert times out before seeing the server). Other customers however can see these and all sites.

    So therefore I am assuming the server itself is denying them access for some reason.

    I have checked the deny logs for csf and the IP addresses of those who cannot access their sites are NOT listed.

    Can anyone recommend any steps i could take to track down why someone is not able to his the server at all.

    Please bear in mind however im quite new to ths command line and shell approad to sorting things out.

    Thanks

    C.
     
    #1 ukdeveloper, Dec 16, 2008
  2. Infopro

    Infopro cPanel Sr. Product Evangelist Staff Member

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    #2 Infopro, Dec 16, 2008
  3. caeos

    caeos Well-Known Member

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    this caused a vps to fail drastically on wednesday and ruin my nameservers at 1and1
    the only way i could access it was via proxu or remove csf.
    all the csf forums say are to check their vps checklist
     
    #3 caeos, Dec 17, 2008
  4. stugster

    stugster Well-Known Member

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    Temporarily disable the firewall in CSF and see if it really is causing the problem. Once it's disabled, ask a client to connect and see if that fixes it. If not, it might not be CSF.
     
    #4 stugster, Dec 18, 2008
  5. wzd

    wzd Well-Known Member

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    The latest CSF and LFD that configserver installed on one of our other servers has some serious paranoa re: security. For example if a client tries to FTP into their account using Filezilla LFD blocks them for TCP scanning

    I would recommend doing what stugster said : Disable CSF in the WHM plugins or by executing "/etc/init.d/csf stop" from command line (You need to be root to run the command)

    With one of our VPS solutions (Prior to installing WHM VPS Optimized2) we were experiencing some unusual issues with loads and file system problems. Check what WHM you are running and what your load levels are (htop is a nice tool for this)

    Hope any of that helps
     
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    #5 wzd, Dec 19, 2008
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