Date: Wed, 3 Feb 1999 13:23:21 +0100 From: Eivind Eklund <eivind@FreeBSD.ORG> To: Robert Watson <robert+freebsd@cyrus.watson.org> Cc: Michael Richards <026809r@dragon.acadiau.ca>, "Jordan K. Hubbard" <jkh@zippy.cdrom.com>, security@FreeBSD.ORG Subject: Re: tcpdump Message-ID: <19990203132321.K8749@bitbox.follo.net> In-Reply-To: <Pine.BSF.3.96.990203004346.21838E-100000@fledge.watson.org>; from Robert Watson on Wed, Feb 03, 1999 at 12:48:34AM -0500 References: <Pine.GSO.4.05.9902030015490.7728-100000@dragon> <Pine.BSF.3.96.990203004346.21838E-100000@fledge.watson.org>
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On Wed, Feb 03, 1999 at 12:48:34AM -0500, Robert Watson wrote: > On Wed, 3 Feb 1999, Michael Richards wrote: > > > On Tue, 2 Feb 1999, Jordan K. Hubbard wrote: > > > > > OK, time to raise this topic again. What to people think about > > > enabling bpfilter by default in GENERIC? > > > > I would think that the majority of us do not use the bpfilter by default. > > My personal opinion (whether correct or not) is that it is more secure > > this way. Many kiddiez have scripts to automate tcpdumping for passwords > > and other such nasties and having to compile a bpf module and load it is > > beyond many people. (I admit I'd have to go find some instructions) > > Security by obscurity in that form works only until the first > script-author writes script-kiddie-script-#20 which automates the process. > And it's not such a complicated task that some bored hacker won't write it > into tomorrow's rootkit. This is not correct. Having BPF support in the kernel also add code to the drivers to support it. It is not possible to compile up as a module without also replacing the drivers. Don't take this as me being against 'pseudo-device bpfilter' in GENERIC; I'm agnostic on that issue. Eivind. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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