mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2025-04-21 12:27:27 +03:00
large init script cleanup and merge of whiterussian changes, new dnsmasq config handling
git-svn-id: svn://svn.openwrt.org/openwrt/trunk/openwrt@3588 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd
@@ -72,6 +72,13 @@ $(PKG_BUILD_DIR)/.built:
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touch $@
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$(IPKG_IPTABLES):
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install -d -m0755 $(IDIR_IPTABLES)/etc/config
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install -m0644 ./files/firewall.config $(IDIR_IPTABLES)/etc/config/firewall
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install -d -m0755 $(IDIR_IPTABLES)/etc/init.d
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install -m0755 ./files/firewall.init $(IDIR_IPTABLES)/etc/init.d/S45firewall
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install -m0755 ./files/firewall.user $(IDIR_IPTABLES)/etc/
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install -d -m0755 $(IDIR_IPTABLES)/usr/lib
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install -m0644 ./files/firewall.awk $(IDIR_IPTABLES)/usr/lib
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install -d -m0755 $(IDIR_IPTABLES)/usr/sbin
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$(CP) $(PKG_INSTALL_DIR)/usr/sbin/iptables $(IDIR_IPTABLES)/usr/sbin/
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install -d -m0755 $(IDIR_IPTABLES)/usr/lib/iptables
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64
package/iptables/files/firewall.awk
Normal file
64
package/iptables/files/firewall.awk
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@@ -0,0 +1,64 @@
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BEGIN {
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print "proto=\"$wan_proto\""
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print "[ -z \"$proto\" -o \"$proto\" = \"none\" ] && exit"
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print "ifname=\"$wan_ifname\""
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print "[ -z \"$ifname\" ] && exit"
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print ""
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print "iptables -X input_$ifname 2>&- >&-"
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print "iptables -N input_$ifname"
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print "iptables -X forward_$ifname 2>&- >&-"
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print "iptables -N forward_$ifname"
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print "iptables -t nat -X prerouting_$ifname 2>&- >&-"
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print "iptables -t nat -N prerouting_$ifname"
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print ""
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print "iptables -A input_rule -i \"$ifname\" -j input_$ifname"
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print "iptables -A forwarding_rule -i \"$ifname\" -j forward_$ifname"
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print "iptables -t nat -A prerouting_rule -i \"$ifname\" -j prerouting_$ifname"
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print ""
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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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($1 == "accept") {
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target = " -j ACCEPT"
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for (o in _opt) {
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print "iptables -t nat -A prerouting_$ifname" _opt[o] str2ipt($2) target
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print "iptables -A input_$ifname " _opt[o] str2ipt($2) target
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print ""
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}
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}
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($1 == "drop") {
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for (o in _opt) {
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print "iptables -t nat -A prerouting_$ifname" _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 ":" $4
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}
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else fwopts = ""
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}
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for (o in _opt) {
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print "iptables -t nat -A prerouting_$ifname" _opt[o] str2ipt($2) target
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print "iptables -A forward_$ifname " _opt[o] " -d " $3 fwopts " -j ACCEPT"
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print ""
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}
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}
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46
package/iptables/files/firewall.config
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46
package/iptables/files/firewall.config
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@@ -0,0 +1,46 @@
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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
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95
package/iptables/files/firewall.init
Executable file
95
package/iptables/files/firewall.init
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@@ -0,0 +1,95 @@
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#!/bin/sh
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## Please make changes in /etc/firewall.user
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. /etc/config/network
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WAN="$wan_ifname"
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LAN="$lan_ifname"
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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 $T -X
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done
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iptables -N input_rule
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iptables -N output_rule
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iptables -N forwarding_rule
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iptables -t nat -N prerouting_rule
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iptables -t nat -N postrouting_rule
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### INPUT
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### (connections with the router as destination)
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# base case
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iptables -P INPUT DROP
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iptables -A INPUT -m state --state INVALID -j DROP
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iptables -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
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iptables -A INPUT -p tcp --tcp-flags SYN SYN --tcp-option \! 2 -j DROP
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#
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# insert accept rule or to jump to new accept-check table here
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#
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iptables -A INPUT -j input_rule
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# allow
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[ -z "$WAN" ] || iptables -A INPUT -i \! $WAN -j 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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# allow
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iptables -A FORWARD -i br0 -o br0 -j ACCEPT
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[ -z "$WAN" ] || iptables -A FORWARD -i $LAN -o $WAN -j ACCEPT
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# reject (what to do with anything not allowed earlier)
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# uses the default -P DROP
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### MASQ
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iptables -t nat -A PREROUTING -j prerouting_rule
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iptables -t nat -A POSTROUTING -j postrouting_rule
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[ -z "$WAN" ] || iptables -t nat -A POSTROUTING -o $WAN -j MASQUERADE
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## USER RULES
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[ -f /etc/firewall.user ] && . /etc/firewall.user
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[ -n "$WAN" -a -e /etc/config/firewall ] && {
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awk -f /usr/lib/common.awk -f /usr/lib/firewall.awk /etc/config/firewall | ash
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}
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31
package/iptables/files/firewall.user
Executable file
31
package/iptables/files/firewall.user
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@@ -0,0 +1,31 @@
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#!/bin/sh
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. /etc/config/network
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WAN="$wan_ifname"
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LAN="$lan_ifname"
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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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### BIG FAT DISCLAIMER
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## The "-i $WAN" is used to match packets that come in via the $WAN interface.
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## it WILL NOT MATCH packets sent from the $WAN ip address -- you won't be able
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## to see the effects from within the LAN.
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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_rule -i $WAN -p tcp --dport 22 -j ACCEPT
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# iptables -A input_rule -i $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_rule -i $WAN -p tcp --dport 8080 -j DNAT --to 192.168.1.2:80
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# iptables -A forwarding_rule -i $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_rule -i $WAN -j DNAT --to 192.168.1.2
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# iptables -A forwarding_rule -i $WAN -d 192.168.1.2 -j ACCEPT
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