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Date:      Thu, 31 May 2001 23:04:44 +0200
From:      "Liran Dahan" <lirandb@netvision.net.il>
To:        <freebsd-security@freebsd.org>
Subject:   Re: Limiting TCP RST Response Packets
Message-ID:  <009401c0ea15$518a3a00$b88f39d5@a>

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I saw blackhole(4) but i dont really understand it..?=20
 is it useful? And if i use firewall and filter-prohib tcp packets, then =
what?

>blackhole makes more sense i think. see blackhole(4)
>
>rohrbach@WM:datasink[~]19% cat /etc/sysctl.conf=20
>net.inet.tcp.blackhole=3D2
>net.inet.udp.blackhole=3D1
>
>/k
>
>Rob Simmons(rsimmons@wlcg.com)@2001.05.31 >14:46:09 +0000:


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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content=3D"text/html; charset=3Dwindows-1255" =
http-equiv=3DContent-Type>
<META content=3D"MSHTML 5.00.2919.6307" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>I saw blackhole(4) but i dont really =
understand=20
it..</FONT><FONT face=3DArial size=3D2>?&nbsp;</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>&nbsp;is it useful? And if i use =
firewall and=20
filter-prohib tcp packets, then what?</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>&gt;blackhole makes more sense i think. =
see=20
blackhole(4)</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>&gt;</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>&gt;rohrbach@WM:datasink[~]19% cat =
/etc/sysctl.conf=20
<BR>&gt;net.inet.tcp.blackhole=3D2<BR>&gt;net.inet.udp.blackhole=3D1</FON=
T></DIV>
<DIV><FONT face=3DArial size=3D2>&gt;</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>&gt;/k</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>&gt;</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>&gt;Rob Simmons(<A=20
href=3D"mailto:rsimmons@wlcg.com">rsimmons@wlcg.com</A>)@2001.05.31 =
&gt;14:46:09=20
+0000:<BR></FONT></DIV></BODY></HTML>

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