nanog mailing list archives

Re: DDOS solution recommendation


From: Brandon Ross <bross () pobox com>
Date: Mon, 12 Jan 2015 15:17:36 -0500 (EST)

On Sun, 11 Jan 2015, Mike Hammett wrote:

I know that UDP can be spoofed, but it's not likely that the SSH, mail, etc. login attempts, web page hits, etc. would be spoofed as they'd have to know the response to be of any good.

Okay, so I'm curious. Are you saying that you do not automatically block attackers until you can confirm a 3-way TCP handshake has been completed, and therefore you aren't blocking sources that were spoofed? If so, how are you protecting yourself against SYN attacks? If not, then you've made it quite easy for attackers to deny any source they want.

--
Brandon Ross                                      Yahoo & AIM:  BrandonNRoss
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