mirror of
https://gitlab.com/shorewall/code.git
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aa7e0cdbeb
git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@1103 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
50 lines
2.1 KiB
Modula-2
50 lines
2.1 KiB
Modula-2
############################################################################
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# Shorewall 1.4 -- /etc/shorewall/common.def
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#
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# This file defines the rules that are applied before a policy of
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# DROP or REJECT is applied. In addition to the rules defined in this file,
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# the firewall will also define a DROP rule for each subnet broadcast
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# address defined in /etc/shorewall/interfaces (including "detect").
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#
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# Do not modify this file -- if you wish to change these rules, create
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# /etc/shorewall/common to replace it. It is suggested that you include
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# the command ". /etc/shorewall/common.def" in your
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# /etc/shorewall/common file so that you will continue to get the
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# advantage of new releases of this file.
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#
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run_iptables -A common -p icmp -j icmpdef
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############################################################################
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# NETBIOS chatter
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#
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run_iptables -A common -p udp --dport 135 -j DROP
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run_iptables -A common -p udp --dport 137:139 -j DROP
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run_iptables -A common -p udp --dport 445 -j DROP
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run_iptables -A common -p tcp --dport 139 -j DROP
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run_iptables -A common -p tcp --dport 445 -j DROP
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run_iptables -A common -p tcp --dport 135 -j DROP
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############################################################################
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# UPnP
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#
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run_iptables -A common -p udp --dport 1900 -j DROP
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############################################################################
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# BROADCASTS
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#
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run_iptables -A common -d 255.255.255.255 -j DROP
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run_iptables -A common -d 224.0.0.0/4 -j DROP
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############################################################################
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# AUTH -- Silently reject it so that connections don't get delayed.
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#
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run_iptables -A common -p tcp --dport 113 -j reject
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############################################################################
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# DNS -- Silenty drop late replies
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#
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run_iptables -A common -p udp --sport 53 -mstate --state NEW -j DROP
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############################################################################
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# ICMP -- Silently drop null-address ICMPs
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#
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run_iptables -A common -p icmp -s 0.0.0.0 -j DROP
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run_iptables -A common -p icmp -d 0.0.0.0 -j DROP
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