nanog mailing list archives
Re: Thank you, Comcast.
From: "Roland Dobbins" <rdobbins () arbor net>
Date: Fri, 26 Feb 2016 23:30:31 +0700
On 26 Feb 2016, at 23:15, Mike Hammett wrote:
I think you'd be hard pressed to find more than a tenth of a percent of people attempt to run their own DNS server.
You'll find a heck of a lot more of them doing so unknowingly, because they're running misconfigured, abusable CPE devices which can be leveraged by attackers to launch DNS reflection/amplification attacks.
Note that outbound/crossbound DDoS attacks can have just as much of a negative impact on availability as inbound DDoS attacks; even more, when multiple attackers are abusing the same reflectors/amplifiers (which is often the case).
And even that small tenth of a percent who're deliberately running their own DNS servers can end up inadvertently causing disruption if they're running those DNS servers as open recursors.
----------------------------------- Roland Dobbins <rdobbins () arbor net>
Current thread:
- Re: Thank you, Comcast., (continued)
- Re: Thank you, Comcast. Mark Andrews (Feb 25)
- Re: Thank you, Comcast. Mikeal Clark (Feb 25)
- Re: Thank you, Comcast. Mike Hammett (Feb 26)
- Re: Thank you, Comcast. Nick Hilliard (Feb 26)
- Re: Thank you, Comcast. Mike Hammett (Feb 26)
- Re: Thank you, Comcast. Dovid Bender (Feb 26)
- Re: Thank you, Comcast. Mike Hammett (Feb 26)
- Re: Thank you, Comcast. Livingood, Jason (Feb 26)
- Re: Thank you, Comcast. Brielle Bruns (Feb 26)
- Re: Thank you, Comcast. Mike Hammett (Feb 26)
- Re: Thank you, Comcast. Roland Dobbins (Feb 26)
- Re: Thank you, Comcast. Brielle Bruns (Feb 26)
- Re: Thank you, Comcast. Mike Hammett (Feb 26)
- Re: Thank you, Comcast. Brielle Bruns (Feb 26)
- Re: Thank you, Comcast. Mike Hammett (Feb 26)
- Re: Thank you, Comcast. Brielle Bruns (Feb 26)
- Re: Thank you, Comcast. David Bass (Feb 26)
- Re: Thank you, Comcast. Mike Hammett (Feb 26)
- Re: DNS filtering, was Thank you, Comcast. John Levine (Feb 26)
- Re: Thank you, Comcast. Chris Adams (Feb 26)
- Re: Thank you, Comcast. Brielle Bruns (Feb 26)