nanog mailing list archives
Re: SMURF amplifier block list - READ THIS
From: Mark Milhollan <mlm () ftel net>
Date: Tue, 14 Apr 1998 21:16:57 -0700
Karl Denninger writes:
A T1 connected person launching a smurf can burn down an OC-12 if they can find amplifiers with enough outbound capacity.
Which is to say a dozen well connected DS-3 networks -- not that hard to find at all. Thankfully that number seems to be dwindling rapidly. This will eventually degenerate to attackers searching for many dozens of DS-1 networks that are open, so small providers/customers should be educated as well.
The *ONLY* long-term fix for smurfing is to prohibit directed broadcasts,
I believe it has to include ingress source address validation. The overall problem remains, getting others to deny spoofing and directed broadcast responses can only be done though communication -- and sometimes excommunication is all that can be heard.
Current thread:
- Re: SMURF amplifier block list, (continued)
- Re: SMURF amplifier block list Aaron Beck (Apr 14)
- Re: SMURF amplifier block list Karl Denninger (Apr 14)
- Re: SMURF amplifier block list Charley Kline (Apr 14)
- Re: SMURF amplifier block list Stephen Sprunk (Apr 14)
- Re: SMURF amplifier block list Stephen Sprunk (Apr 14)
- Re: SMURF amplifier block list Karl Denninger (Apr 14)
- Re: SMURF amplifier block list Aaron Beck (Apr 14)
- Re: SMURF amplifier block list Stephen Sprunk (Apr 14)
- Re: SMURF amplifier block list - READ THIS Karl Denninger (Apr 14)
- Message not available
- Re: SMURF amplifier block list - READ THIS Jay R. Ashworth (Apr 14)
- Re: SMURF amplifier block list - READ THIS Mark Milhollan (Apr 14)
- Re: SMURF amplifier block list - READ THIS Michael Dillon (Apr 14)
- Re: SMURF amplifier block list - READ THIS Dax Kelson (Apr 15)
- Re: SMURF amplifier block list - READ THIS Karl Denninger (Apr 15)
- Re: SMURF amplifier block list - READ THIS Pete Ashdown (Apr 15)
- Re: SMURF amplifier block list - READ THIS Karl Denninger (Apr 15)
- Re: SMURF amplifier block list - READ THIS Pete Ashdown (Apr 15)
- Re: SMURF amplifier block list Mark Milhollan (Apr 14)
- Re: SMURF amplifier block list Brandon Ross (Apr 14)
- Re: SMURF amplifier block list Andrew Smith (Apr 14)
- Re: SMURF amplifier block list Pete Ashdown (Apr 15)