iptables - advanced port blocking/stealth mode

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iptables - advanced port blocking/stealth mode

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10-25-2001, 03:01 PM	#1
siymann LQ Newbie Registered: Jun 2001 Posts: 3 Rep:	iptables - advanced port blocking/stealth mode Hi guys, I used to use ipchains (2.2.x kernel) and had ip masq rules setup (for sharing my cable modem onto my lan). I then upgraded to the latest Slackware version (8 i think) and installed kernel 2.4.x and then noticed i needed to use iptables. I have iptables setup to do basic ipmasq, but I haven't been able to find any info of howto secure it (i.e. get all my crappy ports reporting stealth on steve gibsons shields up site). Does anyone have/know of any info on iptables configuration??? cheers. siy.

10-26-2001, 05:21 AM	#2
raz Member Registered: Apr 2001 Location: London Posts: 408 Rep:	siy, try playing with. iptables -A INPUT -p tcp ! --syn -m state --state NEW -j LOG --log-prefix "New not syn:" iptables -A INPUT -p tcp ! --syn -m state --state NEW -j DROP Go to the following links for the info your looking for. http://people.unix-fu.org/andreasson...l.html#AEN1031 http://ods.dyndns.org/ipt_flow.html http://www.linuxguruz.org/iptables/ http://www.docum.org http://netfilter.filewatcher.org/netfilter-faq.html http://netfilter.filewatcher.org/unr...WTO/index.html http://lists.samba.org/mailman/listinfo/netfilter /Raz

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