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BSNL connectivity issues - can ping but can't browse

Discussion in 'The Café - General Discussions On Everything' started by Kaustubh Katdare, Aug 11, 2017.

  1. Kaustubh Katdare

    Administrator

    Engineering Discipline:
    Electrical
    I've began facing a strange issue on the BSNL network (FTTH). Some of the sites that I used to access daily (including some of our own test servers) aren't accessible anymore. The interesting thing is that I can ping these servers and get a response, however when I try to access them using browser, I get the following error message:

    This site can’t be reached
    The connection was reset.

    Try:
    • Checking the connection
    • Checking the proxy and the firewall
    • Running Network Diagnostics
    ERR_CONNECTION_RESET

    I've already tried altering the DNS but didn't work. I thought the DNS cache could be a problem and cleared it on my machine - still didn't help.

    What's working though is accessing these sites using mobile data connection. I can connect to the sites using Jio's mobile network, but that connection isn't useful for all my regular upload and download activities.

    I've faced this issue in the past but can't recall the exact way I fixed it. Would really appreciate if someone can help with it. If it's all from BSNL's side, I hope they resolve it.
     
    • Like Like x 1
  2. Abhishek Rawal

    Moderator

    Engineering Discipline:
    Electronics & Telecommunications
    Are you using Google Chrome ? Did you try another browser ? Which version of browser is it ?
    Can you open chrome://net-internals/ and click on sockets, flush the socket pools and flush cookies dns cache and restart browser and check again.

    Additionally you can take tcpdump and trace the packets to find the root cause of the issue.
     
  3. Kaustubh Katdare

    Administrator

    Engineering Discipline:
    Electrical
    @Abhishek Rawal - Thanks. The problem auto-resolved. Looks like BSNL servers go mad at times. But that information is going to be super useful. Thanks!
     
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