Date: Sun, 29 Jun 2003 14:33:09 +0700 From: budsz <budsz@kumprang.or.id> To: Bill Moran <wmoran@potentialtech.com> Cc: FreeBSD-Questions <freebsd-questions@FreeBSD.ORG> Subject: Re: What's this mean? Message-ID: <20030629073309.GA19024@kumprang.or.id> In-Reply-To: <3EFDE02C.5010003@potentialtech.com> References: <20030628175128.GA4404@kumprang.or.id> <3EFDE02C.5010003@potentialtech.com>
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On Sat, Jun 28, 2003 at 02:36:28PM -0400, Bill Moran wrote: >in_chksum is a routine that validates the checksum of recieved network data. >As far as I can tell from the code, that error means that the packet of data >was three bytes shorter than it should have been. One way or the other it's >a network problem. Could be crappy NIC or other hardware. Could be some >sort >of attack using invalid packets. I'm not familiar enough with that corner >of >the code to say for sure. >Is this happening frequently? If you only saw the message once, you can >probably ignore it as a network glitch, but if it's showing up often, you'd >do well to track down the source and fix it. Thanks Bill for explanation. I assume if I under attack with invalid packet of data maybe you've any advice to prevent this problem?. -- budsz
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