Date: Fri, 25 Oct 1996 19:49:54 +0500 From: A JOSEPH KOSHY <koshy@india.hp.com> To: freebsd-hackers@freebsd.org Subject: Ping attacks: NT vs FreeBSD Message-ID: <199610251449.AA077244994@fakir.india.hp.com>
next in thread | raw e-mail | index | archive | help
Hi, You may be pleased to note that FreeBSD is listed as on of the OS'es safe from the Ping o' Death bug. See: http://www.sophist.demon.co.uk/ping/ This attack (basically ping'ing with an illegal IP packet size) can bring down many Unix'en including Linux and NetBSD 1.1. NT seems to survive as does Windows-95. I noticed however that two freebsd machines running `ping -f' onto an NT 3.51 box can effectively stop all TCP/IP activity on the NT machine --- denial of service if you may. The NT machine was on a P6/150, 32MB, unknown ethernet card; the FreeBSD boxes were P5-100s with HP-PC Lan and PCI D-Link cards respectively. I'm intrigued by this behaviour. Is this common or is it just a quirk of this specific NT configuration? Has anyone seem similar behaviour under NT 4.0? Any ideas as to why the denial of service behaviour could be occurring? Koshy
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199610251449.AA077244994>