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Strange problem with my VPS

Discussion in 'BlackHat Lounge' started by umerjutt00, Oct 15, 2016.

  1. umerjutt00

    umerjutt00 Jr. VIP Jr. VIP

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    I am facing a strange problem with my VPS.

    I can use the remote desktop to connect to my VPS just fine. This means my VPS does have a working internet connection. However once I am in, I can't open any website on the browser or use anything internet related.

    I checked the proxy settings and everything's fine. (I am not using any proxy).

    Any Idea?
     
  2. Asif WILSON Khan

    Asif WILSON Khan Executive VIP Jr. VIP

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  3. umerjutt00

    umerjutt00 Jr. VIP Jr. VIP

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    Its not new. I am using it for 4 months now I think.
    OS is Windows server 2008.

    Thanks for these links. I will check them out.
     
  4. bk071

    bk071 Jr. Executive VIP Jr. VIP

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    Seems like there' a problem with your DNS config.
    I can take a look if you want (for free of course). Shoot me your skype.
     
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    Last edited: Oct 15, 2016
  5. elavmunretea

    elavmunretea BANNED BANNED

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    What's the error on your browser?
     
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  6. davids355

    davids355 Jr. VIP Jr. VIP

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    Could be that DNS servers are not working - check in control panel, networking, nic properties, tcp v4 - try adding googles DNS (8.8.8.8) as a test.

    Try a different browser if you haven't already.

    Try from command prompt to ping an ip - ping 8.8.8.8 then try to ping a fqdn - ping google.com

    Then report back.
     
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  7. umerjutt00

    umerjutt00 Jr. VIP Jr. VIP

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    The VPS was already set to use Google DNS. I tried switching to default DNS too but no changes.

    I tried pinging ip (8.8.8.8).
    got 4 replies each of 32 bytes. time 9ms. ttl=49

    then i tried to (ping a fqdn - ping google.com).
    ping request could not find host google.com. Please check the name and try again.
     
  8. davids355

    davids355 Jr. VIP Jr. VIP

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    Check here -
    C:\windows\system32\drivers\etc\hosts

    Make sure no entries in there that could be modifying DNS queries (it's like a local DNS zone file).

    Disable firewall if you have one - third party or windows firewall.

    Maybe speak to your provider to see if they have hardware firewall that could be blocking DNS requests.

    Scan for viruses - many viruses mess with the tcp stack and specifically DNS to reroute web queries so it could be that.
     
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  9. BulletServers

    BulletServers Junior Member

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    maybe ask your vps provider to help ?
    Most often they solve these problems with just 1 support ticket
     
  10. umerjutt00

    umerjutt00 Jr. VIP Jr. VIP

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    Looks like I will have to contact the service provider. I tried all of the above.

    Also when I used a VPN (hotspot shield), the internet started working again on the VPS. When I switch it off, the internet stops working again.

    Thanks for your help :)
     
  11. davids355

    davids355 Jr. VIP Jr. VIP

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    Hmm, I'm guessing something is being blocked then, at the provider level and the vpn is circumnavigating that block.

    Yea I think contacting provider is the best bet here.
     
  12. Asif WILSON Khan

    Asif WILSON Khan Executive VIP Jr. VIP

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    Strange I had a similar problem with a brand new VPS but if it has been running fine then you probably need to contact your host/support.

    Are you using the VPS for tools or hosting?

    Check that you have Disabled Internet Explorer Enhanced Security Configuration
    http://lmgtfy.com/?q=Disable+Internet+Explorer+Enhanced+Security+Configuration

    Then try to browse with IE. If you can't browse with IE use Remote Desktop Connection and transfer a copy of Firefox/Chrome/Opera
     
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  13. umerjutt00

    umerjutt00 Jr. VIP Jr. VIP

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    I have chrome and IE on the VPS and none of them work. I am using the VPS for running tools (GSA SER, Captcha breaker).

    I will contact the provider on Monday now as they don't offer support on sat, sun.
     
  14. elavmunretea

    elavmunretea BANNED BANNED

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    Try these commands on a CMD as an Admin:

    ipconfig /flushdns
    ipconfig /registerdns
    ipconfig /release
    ipconfig /renew

    That usually works for me
     
  15. davids355

    davids355 Jr. VIP Jr. VIP

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    because ping of google.com is not working from command prompt either its unlikely to be browser specific. But rather it seems to be issue with DNS itself, or a firewall issue.

    Just this part might work:

    ipconfig /flushdns
    ipconfig /registerdns

    The last two wont work because I am guessing that IP is assigned statically so they have no effect. And if its not assigned statically then ipconfig /release will break your connection completely.