nanog mailing list archives
Re: SMURF amplifier block list
From: "Jay R. Ashworth" <jra () scfn thpl lib fl us>
Date: Sun, 19 Apr 1998 20:39:41 -0400
On Sat, Apr 18, 1998 at 12:39:29PM -0500, Dan Boehlke wrote:
On Sat, 18 Apr 1998, Alex P. Rudnev wrote:Why don't use the filter deny icmp any 0.0.0.255 255.255.255.0 echo-request on the incoming lines? It just block 99.999% of this smurf amplifiers; and I hardly think someone eve sence this restriction for the real PING tests.What about people who didn't subnet their class B on the eight bit boundry, but made larger subnets instead? What about the class B that doesn't appear to be subnetted at all? What about supernetted class C networks? A trailing .255 can be a valid host.
Yes, Dan, but any potential smurf-_amplifier_ who might need to do this _knows_ this about _their own network_, and can adjust accordingly. Cheers, -- jra -- Jay R. Ashworth jra () baylink com Member of the Technical Staff Unsolicited Commercial Emailers Sued The Suncoast Freenet "Two words: Darth Doogie." -- Jason Colby, Tampa Bay, Florida on alt.fan.heinlein +1 813 790 7592 Managing Editor, Top Of The Key sports e-zine ------------ http://www.totk.com
Current thread:
- Re: SMURF amplifier block list, (continued)
- Re: SMURF amplifier block list Jeremiah Kristal (Apr 19)
- Re: SMURF amplifier block list Brandon Ross (Apr 20)
- Re: SMURF amplifier block list Dean Anderson (Apr 20)
- Re: SMURF amplifier block list Dave Andersen (Apr 20)
- Re: SMURF amplifier block list Jeremy Porter (Apr 20)
- Re: SMURF amplifier block list Brandon Ross (Apr 22)
- Re: SMURF amplifier block list Jason Lixfeld (Apr 24)
- Re: SMURF amplifier block list jlixfeld (Apr 20)
- Re: SMURF amplifier block list Alex P. Rudnev (Apr 20)
- Spoofed Packet Tracker (Was Re: SMURF amplifier block list) Jared Mauch (Apr 20)
- Message not available
- Re: SMURF amplifier block list Jay R. Ashworth (Apr 19)
- Re: SMURF amplifier block list jlixfeld (Apr 20)
- Re: SMURF amplifier block list Dean Anderson (Apr 18)
- Re: SMURF amplifier block list Alex P. Rudnev (Apr 18)
- Re: SMURF amplifier block list Dean Anderson (Apr 18)
- Re: SMURF amplifier block list Alex P. Rudnev (Apr 18)
- Re: SMURF amplifier block list Dean Anderson (Apr 18)
- Re: SMURF amplifier block list jlixfeld (Apr 20)
- Re: SMURF amplifier block list Pete Ashdown (Apr 20)
- Re: SMURF amplifier block list Jason Lixfeld (Apr 24)
- Filtering ICMP (Was Re: SMURF amplifier block list) Mark Whitis (Apr 20)