SVN-Revision: 12284master
parent
4b5488ebfa
commit
5627667654
@ -1,17 +0,0 @@ |
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choice |
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prompt "Choose firewall" |
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default FIREWALL_OLD |
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depends PACKAGE_firewall |
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config FIREWALL_OLD |
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bool "old firewall" |
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config FIREWALL_NEW |
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bool "new uci firewall" |
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select PACKAGE_iptables-mod-conntrack |
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select PACKAGE_iptables-mod-extra |
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select PACKAGE_iptables-mod-ipopt |
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select PACKAGE_iptables-mod-ulog |
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select PACKAGE_kmod-ipt-nathelper |
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endchoice |
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# Copyright (C) 2006 OpenWrt.org |
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BEGIN { |
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FS=":" |
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} |
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($1 == "accept") || ($1 == "drop") || ($1 == "forward") { |
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delete _opt |
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str2data($2) |
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if ((_l["proto"] == "") && (_l["sport"] _l["dport"] != "")) { |
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_opt[0] = " -p tcp" |
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_opt[1] = " -p udp" |
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} else { |
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_opt[0] = "" |
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} |
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} |
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|
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($1 == "accept") { |
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target = " -j ACCEPT" |
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for (o in _opt) { |
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print "iptables -t nat -A prerouting_wan" _opt[o] str2ipt($2) target |
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print "iptables -A input_wan " _opt[o] str2ipt($2) target |
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print "" |
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} |
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} |
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|
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($1 == "drop") { |
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for (o in _opt) { |
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print "iptables -t nat -A prerouting_wan" _opt[o] str2ipt($2) " -j DROP" |
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print "" |
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} |
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} |
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($1 == "forward") { |
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target = " -j DNAT --to " $3 |
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fwopts = "" |
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if ($4 != "") { |
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if ((_l["proto"] == "tcp") || (_l["proto"] == "udp") || (_l["proto"] == "")) { |
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if (_l["proto"] != "") fwopts = " -p " _l["proto"] |
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fwopts = fwopts " --dport " $4 |
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target = target ":" $4 |
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} |
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else fwopts = "" |
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} |
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for (o in _opt) { |
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print "iptables -t nat -A prerouting_wan" _opt[o] str2ipt($2) target |
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print "iptables -A forwarding_wan " _opt[o] " -d " $3 fwopts " -j ACCEPT" |
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print "" |
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} |
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} |
@ -1,48 +0,0 @@ |
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# Copyright (C) 2006 OpenWrt.org |
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# RULE SYNTAX: |
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# |
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# forward:<match>:<target>[:<port>] |
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# - forwards all packets matched by <match> to <target>, |
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# optionally changing the port to <port> |
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# |
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# accept:<match> |
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# - accepts all traffic matched by <match> |
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# |
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# drop:<match> |
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# - drops all traffic matched by <match> |
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# |
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# |
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# MATCHING OPTIONS: |
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# |
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# src=<ip> |
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# - match the source ip <ip> |
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# |
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# dest=<ip> |
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# - match the destination ip <ip> |
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# |
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# proto=<proto> |
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# - match the protocol by name or number |
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# |
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# sport=<port(s)> |
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# - match the source port(s), see below for syntax |
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# |
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# dport=<port(s)> |
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# - match the destination port(s), see below for syntax |
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# |
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# |
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# |
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# PORT SYNTAX: |
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# |
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# You can enter an arbitrary list of ports and port ranges in the following format: |
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# - 22,53,993,1000-1024 |
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# |
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# If you don't set the protocol to tcp or udp, it will apply to both |
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# |
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# |
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# |
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# EXAMPLES: |
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# |
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# drop:dport=22 src=1.3.3.7 |
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# accept:proto=tcp dport=22 |
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# forward:dport=60168:192.168.1.2:60169 |
@ -1,142 +0,0 @@ |
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#!/bin/sh /etc/rc.common |
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# Copyright (C) 2006 OpenWrt.org |
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## Please make changes in /etc/firewall.user |
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START=45 |
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start() { |
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include /lib/network |
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scan_interfaces |
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config_get WAN wan ifname |
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config_get WANDEV wan device |
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config_get LAN lan ifname |
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config_get_bool NAT_LAN lan nat 1 |
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if [ $NAT_LAN -ne 0 ] |
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then |
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config_get LAN_MASK lan netmask |
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config_get LAN_IP lan ipaddr |
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LAN_NET=$(/bin/ipcalc.sh $LAN_IP $LAN_MASK | grep NETWORK | cut -d= -f2) |
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fi |
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## CLEAR TABLES |
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for T in filter nat; do |
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iptables -t $T -F |
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iptables -t $T -X |
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done |
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iptables -N input_rule |
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iptables -N input_wan |
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iptables -N output_rule |
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iptables -N forwarding_rule |
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iptables -N forwarding_wan |
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iptables -t nat -N NEW |
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iptables -t nat -N prerouting_rule |
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iptables -t nat -N prerouting_wan |
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iptables -t nat -N postrouting_rule |
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iptables -N LAN_ACCEPT |
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[ -z "$WAN" ] || iptables -A LAN_ACCEPT -i "$WAN" -j RETURN |
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[ -z "$WANDEV" -o "$WANDEV" = "$WAN" ] || iptables -A LAN_ACCEPT -i "$WANDEV" -j RETURN |
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iptables -A LAN_ACCEPT -j ACCEPT |
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### INPUT |
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### (connections with the router as destination) |
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# base case |
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iptables -P INPUT DROP |
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iptables -A INPUT -m state --state INVALID -j DROP |
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iptables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT |
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iptables -A INPUT -p tcp --tcp-flags SYN SYN --tcp-option \! 2 -j DROP |
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# |
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# insert accept rule or to jump to new accept-check table here |
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# |
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iptables -A INPUT -j input_rule |
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[ -z "$WAN" ] || iptables -A INPUT -i $WAN -j input_wan |
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# allow |
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iptables -A INPUT -j LAN_ACCEPT # allow from lan/wifi interfaces |
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iptables -A INPUT -p icmp -j ACCEPT # allow ICMP |
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iptables -A INPUT -p gre -j ACCEPT # allow GRE |
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# reject (what to do with anything not allowed earlier) |
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iptables -A INPUT -p tcp -j REJECT --reject-with tcp-reset |
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iptables -A INPUT -j REJECT --reject-with icmp-port-unreachable |
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### OUTPUT |
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### (connections with the router as source) |
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# base case |
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iptables -P OUTPUT DROP |
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iptables -A OUTPUT -m state --state INVALID -j DROP |
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iptables -A OUTPUT -m state --state RELATED,ESTABLISHED -j ACCEPT |
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# |
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# insert accept rule or to jump to new accept-check table here |
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# |
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iptables -A OUTPUT -j output_rule |
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# allow |
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iptables -A OUTPUT -j ACCEPT #allow everything out |
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# reject (what to do with anything not allowed earlier) |
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iptables -A OUTPUT -p tcp -j REJECT --reject-with tcp-reset |
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iptables -A OUTPUT -j REJECT --reject-with icmp-port-unreachable |
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### FORWARDING |
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### (connections routed through the router) |
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# base case |
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iptables -P FORWARD DROP |
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iptables -A FORWARD -m state --state INVALID -j DROP |
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iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu |
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iptables -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT |
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# |
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# insert accept rule or to jump to new accept-check table here |
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# |
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iptables -A FORWARD -j forwarding_rule |
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[ -z "$WAN" ] || iptables -A FORWARD -i $WAN -j forwarding_wan |
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# allow |
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iptables -A FORWARD -i $LAN -o $LAN -j ACCEPT |
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[ -z "$WAN" ] || iptables -A FORWARD -i $LAN -o $WAN -j ACCEPT |
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# reject (what to do with anything not allowed earlier) |
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# uses the default -P DROP |
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### MASQ |
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iptables -t nat -A PREROUTING -m state --state NEW -p tcp -j NEW |
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iptables -t nat -A PREROUTING -j prerouting_rule |
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[ -z "$WAN" ] || iptables -t nat -A PREROUTING -i "$WAN" -j prerouting_wan |
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iptables -t nat -A POSTROUTING -j postrouting_rule |
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### Only LAN, unless told not to |
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if [ $NAT_LAN -ne 0 ] |
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then |
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[ -z "$WAN" ] || iptables -t nat -A POSTROUTING --src $LAN_NET/$LAN_MASK -o $WAN -j MASQUERADE |
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fi |
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iptables -t nat -A NEW -m limit --limit 50 --limit-burst 100 -j RETURN && \ |
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iptables -t nat -A NEW -j DROP |
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## USER RULES |
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[ -f /etc/firewall.user ] && . /etc/firewall.user |
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[ -n "$WAN" -a -e /etc/firewall.config ] && { |
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export WAN |
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awk -f /usr/lib/common.awk -f /usr/lib/firewall.awk /etc/firewall.config | ash |
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} |
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} |
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stop() { |
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iptables -P INPUT ACCEPT |
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iptables -P OUTPUT ACCEPT |
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iptables -P FORWARD ACCEPT |
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iptables -F |
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iptables -X |
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iptables -t nat -P PREROUTING ACCEPT |
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iptables -t nat -P POSTROUTING ACCEPT |
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iptables -t nat -P OUTPUT ACCEPT |
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iptables -t nat -F |
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iptables -t nat -X |
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} |
@ -1,30 +0,0 @@ |
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#!/bin/sh |
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# Copyright (C) 2006 OpenWrt.org |
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iptables -F input_rule |
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iptables -F output_rule |
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iptables -F forwarding_rule |
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iptables -t nat -F prerouting_rule |
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iptables -t nat -F postrouting_rule |
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# The following chains are for traffic directed at the IP of the |
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# WAN interface |
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iptables -F input_wan |
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iptables -F forwarding_wan |
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iptables -t nat -F prerouting_wan |
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### Open port to WAN |
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## -- This allows port 22 to be answered by (dropbear on) the router |
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# iptables -t nat -A prerouting_wan -p tcp --dport 22 -j ACCEPT |
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# iptables -A input_wan -p tcp --dport 22 -j ACCEPT |
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### Port forwarding |
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## -- This forwards port 8080 on the WAN to port 80 on 192.168.1.2 |
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# iptables -t nat -A prerouting_wan -p tcp --dport 8080 -j DNAT --to 192.168.1.2:80 |
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# iptables -A forwarding_wan -p tcp --dport 80 -d 192.168.1.2 -j ACCEPT |
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### DMZ |
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## -- Connections to ports not handled above will be forwarded to 192.168.1.2 |
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# iptables -t nat -A prerouting_wan -j DNAT --to 192.168.1.2 |
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# iptables -A forwarding_wan -d 192.168.1.2 -j ACCEPT |
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