North American Network Operators Group|
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Re: ip directed-broadcast
On Mon, Dec 29, 1997 at 12:42:50PM -0500, Jon Lewis wrote: > > > 2.) they will no longer filter icmp echo reply for me, even though > > they understand that my link is now useless without that. > > They do not have cpu cycles to spare for this purpose. > > Somewhat understandable...but perhaps they should have designed their > network a little better and not overloaded their routers to point that one > or few line filters push the CPU over the edge....Strike 2. > > > 3.) they do not see this type of attack very often and don't > > consider it much of a problem. > > Sure...it causes them very little trouble. Odds are good their NOC gets > smurfed very rarely. Strike 3. We have a T-1 to Sprint, served out of their Ft. Worth POP. If I down the T on our end, does anyone know if the Sprint (or MCI, or UUNET, etc) router will send back ICMP host/network unreachable messages? I ask because if the core routers DO send back ICMP host/network unreachables and a customer that is being smurfed turns down their T, I'd imagine that the core router would generate a heck of a lot of traffic. It might be enough to catch someone's attention. -- Eric, who does not have a lot of patience with companies that don't seem to care about smurfing. -- Eric Wieling (email@example.com), Corporate Communications Technology Sales: 504-585-7303 (firstname.lastname@example.org), Support: 504-525-5449 (email@example.com) Paranoia: It's not just for breakfast anymore.