North American Network Operators Group|
Date Prev | Date Next |
Date Index |
Thread Index |
Author Index |
Re: SMURF amplifier block list
- From: Karl Denninger
- Date: Tue Apr 14 16:40:10 1998
Karl Denninger (karl@MCS.Net)| MCSNet - Serving Chicagoland and Wisconsin
http://www.mcs.net/ | T1's from $600 monthly / All Lines K56Flex/DOV
| NEW! Corporate ISDN Prices dropped by up to 50%!
Voice: [+1 312 803-MCS1 x219]| EXCLUSIVE NEW FEATURE ON ALL PERSONAL ACCOUNTS
Fax: [+1 312 803-4929] | *SPAMBLOCK* Technology now included at no cost
On Tue, Apr 14, 1998 at 03:25:34PM -0500, Stephen Sprunk wrote:
> Are we really concerned about being smurfed by a /30, or even a /27?
> The essential problem is backbone class-C's, especially those in NAPs
> where coordination is nearly impossible. Smaller subnets tend to be in
> small ISPs' or customers' networks, which don't pose a threat since they
> lack the bandwidth for an effective attack.
> Karl Denninger wrote:
> > The larger problem is that subnetted /24s still are wide open. This kind of
> > filter won't block anything from their broadcast addresses, since they're
> > not the .255 address.
> Stephen Sprunk "Oops." Email: firstname.lastname@example.org
> Sprint Paranet -Albert Einstein ICBM: 33.00151N 96.82326W