From owner-freebsd-security@FreeBSD.ORG  Tue Apr  6 18:31:14 2004
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From: "Mark Picone" <wts666@iprimus.com.au>
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Date: Wed, 7 Apr 2004 11:29:51 +1000
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Subject: RE: SYN attacks (correction)
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you should add
net.inet.tcp.drop_synfin=1 to /etc/sysctl.conf so it gets piped into sysctl
on boot
or just run sysctl net.inet.tcp.drop_synfin=1 as root

-----Original Message-----
From: owner-freebsd-security@freebsd.org
[mailto:owner-freebsd-security@freebsd.org] On Behalf Of Mark Picone
Sent: Wednesday, 7 April 2004 10:57 am
To: freebsd-security@freebsd.org
Subject: RE: SYN attacks

You could try adding this to /etc/sysctl.conf

sysctl net.inet.tcp.drop_synfin=1

-----Original Message-----
From: owner-freebsd-security@freebsd.org
[mailto:owner-freebsd-security@freebsd.org] On Behalf Of Spades
Sent: Wednesday, 7 April 2004 3:02 am
To: freebsd-questions@freebsd.org
Cc: freebsd-security@freebsd.org
Subject: SYN attacks

Heya,

FREEBSD 4.9-STABLE

Is there anyway to block SYN attacks and prevent it from bring down my
server?

Its been attacking for sometime.
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