看板FB_security
標 題Re: FreeBSD Security Advisory FreeBSD-SA-14:08.tcp
發信站NCTU CS FreeBSD Server (Sun May 4 08:53:54 2014)
轉信站ptt!csnews.cs.nctu!news.cednctu!FreeBSD.cs.nctu!.POSTED!freebsd.org!ow
On Sat, 3 May 2014 01:25:40 -0400, Garrett Wollman wrote:
> <<On Sat, 3 May 2014 13:53:44 +1000 (EST), Ian Smith <
[email protected]> said:
>
> > I've always allowed frags, as per the example rulesets in rc.firewall.
> > I only recall seeing them on DNS responses from zen.spamhaus.org, where
> > I see plenty of these after a resetlog before the logging limit kicks
> > in. I doubt I'd be getting rid of ~90% of incoming spam without; eg:
>
> Blocking inbound fragments will definitely screw you when you try to
> use DNSsec.
Thanks to you and Darren; more grist for mending the Handbook ipfw page,
likely why some people have been perhaps ill-advisedly dropping frags.
cheers, Ian
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