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Date:      Tue, 11 Apr 2000 16:50:04 -0400 (EDT)
From:      Lanny Baron <lnb@freebsdsystems.com>
To:        Chris Byrnes <chris@shell.jeah.net>
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   RE: Problem.  your problem with date and dos attacks
Message-ID:  <XFMail.000411165004.lnb@freebsdsystems.com>
In-Reply-To: <200004111907.OAA00656@shell.jeah.net>

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Hi,
run date with the actual date and time.. example
date 200004111433
that will set the date to april 10 2000 2:43 pm e.s.t. and do it as ROOT

As for the dos attacks...
rebuild your kernel with the following...

options         ICMP_BANDLIM            #Rate 
options         TCP_DROP_SYNFIN         #drop TCP packets with SYN+FIN
options         TCP_RESTRICT_RST        #restrict emission of TCP RST

-lnb

On 11-Apr-00 Chris Byrnes wrote:
> My FreeBSD box received tons of DOS attacks over the last few days and was
> off the net for awhile.
> 
> It's back now, but...
> 
> Apr 11 14:02:57 shell xntpd[137]: time error 3602.928795 is way too large
> (set clock manually)
> 
> It didnt adjust for DST, either.
> 
> Any ways to force xntpd to do the update?
> 
> 
> Chris
> 
> 
> To Unsubscribe: send mail to majordomo@FreeBSD.org
> with "unsubscribe freebsd-questions" in the body of the message

Lanny Baron,
Master FreeBSD Administrator
----------------------------------
Date: 11-Apr-00
Time: 16:50:04

"Contrary to popular belief, penguins are not the salvation of modern
technology.  Neither do they throw parties for the urban proletariat."

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