mikenolan7
Premium
join:2005-06-07
Torrance, CA
| Re: Seeing similar probes Think twice before dropping traffic. I'm just a home user, but I have a pretty good-sized network I experiment with here (15 machines +/-). I run zero externally accessible services, but I'm on a cable modem and live in LA. The number of attacks is hard to believe (I average anywhere between one every 3 to 10 seconds). I used to just drop it all, but I found when I rejected everything instead, the number of attacks dropped by about 70%. I run strict rate limits on the rejections so no one can get much benefit from using my address as part of a reverse DDOS, but I haven't seen that even tried, yet (using my address anyway).
The only explanation I can come up with is that the automated attacks move on when they get a rejection, but try a few more times if nothing comes back - possibly hoping that the lack of a rejection indicates other "misconfigurations". RoadRunners arp blasters pretty much tell anyone with a clue what IP's are in use at any time. |
