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    Server from US connecting to UK…

    Scheduled Pinned Locked Moved Off-Topic & Non-Support Discussion
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    • P
      pinoyboy
      last edited by

      After putting in pfSense 2.3.2_P1, I enabled ntopng and noticed weird connections such as below.  The machine is a HyperV Windows 2012 R2 Server Host - looks like I will have to rebuild the server!  UK Government though?

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      • BBcan177B
        BBcan177 Moderator
        last edited by

        Looks to be Microsoft related.

        http://www.tcpiputils.com/browse/ip-address/51.140.36.244

        You can click the blue infoblock icon in the pfBlockerNG alerts tab to pull up several different Threat source links.

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        • DerelictD
          Derelict LAYER 8 Netgate
          last edited by

          I don't understand how you think rebuilding a server will stop a particular IP address in the UK from attempting to connect to you.

          That's why we run firewalls that block unsolicited traffic in the first place.

          Chattanooga, Tennessee, USA
          A comprehensive network diagram is worth 10,000 words and 15 conference calls.
          DO NOT set a source address/port in a port forward or firewall rule unless you KNOW you need it!
          Do Not Chat For Help! NO_WAN_EGRESS(TM)

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          • jimpJ
            jimp Rebel Alliance Developer Netgate
            last edited by

            It's Teredo tunneling. Don't panic, just disable that in the network settings on the Hyper-V server.

            For example: https://technet.microsoft.com/en-us/library/cc770710(v=ws.10).aspx

            Remember: Upvote with the 👍 button for any user/post you find to be helpful, informative, or deserving of recognition!

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