Looks like your network has a user or two participating in this retarded attempt to drop the Internet.
Thanks, Ameen Pishdadi On Mar 31, 2012, at 8:30 PM, Greg Ihnen <[email protected]> wrote: > I manage a tiny network in the Amazon, a satellite internet connection and > decent sized wireless network. > > All of my users started complaining yesterday about lost connectivity except > for Skype. I had no problems. I checked from the users' computers and could > not resolve domain names (when Skype connects and nothing else does it's > always been a DNS issue). After much troubleshooting I finally fired up > Wireshark and saw that the DNS servers (or someone appearing to have their IP > addresses) were replying to our queries with "no such name". > > The reason I was having no problems is I'm using OpenDNS' DNSCrypt. With > DNSCrypt on we have no problems. With good old fashioned unencrypted DNS > (Googles, OpenDNS', our ISPs) we're barely able to communicate. > > Is DNS traffic being directed to bogus servers? Are the real servers being > overloaded? Am I seeing the results of some kind of DDOS mitigation technique? > > Is anyone else seeing this? > > Greg Ihnen
