nanog mailing list archives
Re: Filtering ICMP (Was Re: SMURF amplifier block list)
From: Michael Dillon <michael () memra com>
Date: Mon, 20 Apr 1998 16:15:14 -0700 (PDT)
On Mon, 20 Apr 1998, Mark Whitis wrote:
As an aside on the original topic, filtering on 0.0.0.255 mask 0.0.0.255 is also irresponsible and never should have been suggested here. The lame arguments that anyone who has a host in that range is asking for trouble are specious; just because they may be adversely affected by some clueless individual somewhere does not justify your being clueless as well.
Wholesale filtering of ?.?.?.255 is irresponsible but if you have downstream networks who are unable to block directed broadcasts then it is a reasonable stopgap measure to block ?.?.?.255 traffic in those downstream network blocks only. But at the same time you should *DEMAND* that the downstream customer's router vendor fix their broken equipment or else advertise that it is suitable only for use on networks that are not interconnected with the Internet. -- Michael Dillon - Internet & ISP Consulting http://www.memra.com - E-mail: michael () memra com
Current thread:
- Re: SMURF amplifier block list, (continued)
- 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)
- Re: Filtering ICMP (Was Re: SMURF amplifier block list) Marc Slemko (Apr 20)
- Re: Filtering ICMP (Was Re: SMURF amplifier block list) Michael Dillon (Apr 20)
- Re: Filtering ICMP (Was Re: SMURF amplifier block list) Mark Whitis (Apr 22)
- Re: Filtering ICMP (Was Re: SMURF amplifier block list) Michael Dillon (Apr 20)
- Re: Filtering ICMP (Was Re: SMURF amplifier block list) Michael Shields (Apr 22)
- Re: Filtering ICMP (Was Re: SMURF amplifier block list) Alex P. Rudnev (Apr 21)
- Re: Filtering ICMP (Was Re: SMURF amplifier block list) D'Arcy J.M. Cain (Apr 22)
- Re: Filtering ICMP (Was Re: SMURF amplifier block list) Alex P. Rudnev (Apr 21)
- Message not available
- Re: Filtering ICMP (Was Re: SMURF amplifier block list) Eric Germann (Apr 21)
- Re: Filtering ICMP (Was Re: SMURF amplifier block list) Jason Lixfeld (Apr 24)
- Re: Filtering ICMP (Was Re: SMURF amplifier block list) Pete Ashdown (Apr 24)
- Re: Filtering ICMP (Was Re: SMURF amplifier block list) Richard Irving (Apr 24)