Date: Wed, 19 Dec 2001 04:44:40 +0800 From: slack@suntop-cn.com To: freebsd-security@FreeBSD.ORG Subject: about ipfw Message-ID: <3C201B38.28785.6DBD8F@localhost>
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1. can ipfw do a TCP keep-state ? 2. how keep-state combine with "via interface" ? 3. this ipfw rules don't work: why ? ipfw add pass all any to any via lo ipfw add pass all any to any via ${iif} ipfw add divert natd all from any to any via ${oif} # Allow TCP through if setup succeeded ipfw add check-state ${fwcmd} add deny tcp from any to any established # Allow IP fragments to pass through ${fwcmd} add deny all from any to any via ${oif} frag # Allow icmp 0 3 8 11 pass ${fwcmd} add pass icmp from any to any via ${oif} icmptypes 0,3,8,11 # Reject&Log all setup of incoming connections from the outside ${fwcmd} add deny log tcp from any to any in via ${oif} setup # Allow setup of any other TCP connection ${fwcmd} add pass tcp from any to any out via ${oif} setup keep-state # Allow DNS queries out in the world ${fwcmd} add pass udp from ${oip} to any 53 out via ${oif} keep-state # Allow NTP queries out in the world ${fwcmd} add pass udp from ${oip} to any 123 out via ${oif} keep-state ${fwcmd} add deny log all from any to any To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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