Date: Wed, 24 Jan 2001 18:07:57 +0300 From: "Mr. Blackman" <blackman@blackman.ru> To: "Sean O'Connell" <sean@stat.Duke.EDU> Cc: freebsd-security@freebsd.org Subject: Re: DoS: socket: No buffer space available Message-ID: <01012418184202.31962@localhost.localdomain> In-Reply-To: <20010124093824.C64654@stat.Duke.EDU> References: <01012417332701.31962@localhost.localdomain> <20010124093824.C64654@stat.Duke.EDU>
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options NMBCLUSTERS=32768 options NSFBUFS=32768 ...always- this is the first thing, that I made on new servers. netstat -m - 30% used or so... I would like to know all possible reasons of socket: no buffer space available (for example: $sudo bash: socket: no buffer space available) > > I would guess MBUF exhaustion as the cause. Look at > > netstat -m > > /sys/i386/conf/LINT has some tuning examples. I think this works > under RELENG_3 > > options NMBCLUSTERS=8192 > > (or bigger). You can also up the # of maxusers to 128 or something > as this will resize most of the kernel tables. I fear a reboot may > be the only short term fix. > > S > -- > Sean O'Connell Email: sean@stat.Duke.EDU > Institute of Statistics and Decision Sciences Phone: (919) 684-5419 > Duke University Fax: (919) 684-8594 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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