Date: 24 Mar 2003 14:33:49 -0500 From: Adam <blueeskimo@gmx.net> To: freebsd-questions@freebsd.org Subject: IPF misbehaves on prolonged TCP flood Message-ID: <1048534429.15312.119.camel@jake>
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I am running FreeBSD v4.7 on a Athlon 1600+ w/ 512mb RAM. I have experienced on several occasions where a prolonged TCP flood causes me to lose the ability to do DNS resolutions. My internet connection itself is still working, as my existing connections are still active. The only thing I've noticed not working is DNS resolutions. The problem will persist indefinitely unless I rehash IPF. This problem has happened twice when backing up my Windows "C:\Program Files" directory via FTP to my FreeBSD box. It also happened recently when some lamer was DDoS'ing my box for ~30 hours or so. Each time, rehashing IPF fixes the problem instantly. So, IPF has to be related. Is anyone familiar with such a problem? Any idea what might be causing it, or how to correct it by adding/removing/modifying a setting somewhere? Thanks, -- Adam <blueeskimo@gmx.net> To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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