firewall: add to test

4 files changed, 274 insertions, 0 deletions

diff --git a/firewall/files/firewall.config b/firewall/files/firewall.config
new file mode 100644
index 0000000..8874e98
--- /dev/null
+++ b/firewall/files/firewall.config
@@ -0,0 +1,195 @@
+config defaults
+	option syn_flood	1
+	option input		ACCEPT
+	option output		ACCEPT
+	option forward		REJECT
+# Uncomment this line to disable ipv6 rules
+#	option disable_ipv6	1
+
+config zone
+	option name		lan
+	list   network		'lan'
+	option input		ACCEPT
+	option output		ACCEPT
+	option forward		ACCEPT
+
+config zone
+	option name		wan
+	list   network		'wan'
+	list   network		'wan6'
+	option input		REJECT
+	option output		ACCEPT
+	option forward		REJECT
+	option masq		1
+	option mtu_fix		1
+
+config forwarding
+	option src		lan
+	option dest		wan
+
+# We need to accept udp packets on port 68,
+# see https://dev.openwrt.org/ticket/4108
+config rule
+	option name		Allow-DHCP-Renew
+	option src		wan
+	option proto		udp
+	option dest_port	68
+	option target		ACCEPT
+	option family		ipv4
+
+# Allow IPv4 ping
+config rule
+	option name		Allow-Ping
+	option src		wan
+	option proto		icmp
+	option icmp_type	echo-request
+	option family		ipv4
+	option target		ACCEPT
+
+config rule
+	option name		Allow-IGMP
+	option src		wan
+	option proto		igmp
+	option family		ipv4
+	option target		ACCEPT
+
+# Allow DHCPv6 replies
+# see https://dev.openwrt.org/ticket/10381
+config rule
+	option name		Allow-DHCPv6
+	option src		wan
+	option proto		udp
+	option src_ip		fc00::/6
+	option dest_ip		fc00::/6
+	option dest_port	546
+	option family		ipv6
+	option target		ACCEPT
+
+config rule
+	option name		Allow-MLD
+	option src		wan
+	option proto		icmp
+	option src_ip		fe80::/10
+	list icmp_type		'130/0'
+	list icmp_type		'131/0'
+	list icmp_type		'132/0'
+	list icmp_type		'143/0'
+	option family		ipv6
+	option target		ACCEPT
+
+# Allow essential incoming IPv6 ICMP traffic
+config rule
+	option name		Allow-ICMPv6-Input
+	option src		wan
+	option proto	icmp
+	list icmp_type		echo-request
+	list icmp_type		echo-reply
+	list icmp_type		destination-unreachable
+	list icmp_type		packet-too-big
+	list icmp_type		time-exceeded
+	list icmp_type		bad-header
+	list icmp_type		unknown-header-type
+	list icmp_type		router-solicitation
+	list icmp_type		neighbour-solicitation
+	list icmp_type		router-advertisement
+	list icmp_type		neighbour-advertisement
+	option limit		1000/sec
+	option family		ipv6
+	option target		ACCEPT
+
+# Allow essential forwarded IPv6 ICMP traffic
+config rule
+	option name		Allow-ICMPv6-Forward
+	option src		wan
+	option dest		*
+	option proto		icmp
+	list icmp_type		echo-request
+	list icmp_type		echo-reply
+	list icmp_type		destination-unreachable
+	list icmp_type		packet-too-big
+	list icmp_type		time-exceeded
+	list icmp_type		bad-header
+	list icmp_type		unknown-header-type
+	option limit		1000/sec
+	option family		ipv6
+	option target		ACCEPT
+
+config rule
+	option name		Allow-IPSec-ESP
+	option src		wan
+	option dest		lan
+	option proto		esp
+	option target		ACCEPT
+
+config rule
+	option name		Allow-ISAKMP
+	option src		wan
+	option dest		lan
+	option dest_port	500
+	option proto		udp
+	option target		ACCEPT
+
+# include a file with users custom iptables rules
+config include
+	option path /etc/firewall.user
+
+
+### EXAMPLE CONFIG SECTIONS
+# do not allow a specific ip to access wan
+#config rule
+#	option src		lan
+#	option src_ip	192.168.45.2
+#	option dest		wan
+#	option proto	tcp
+#	option target	REJECT
+
+# block a specific mac on wan
+#config rule
+#	option dest		wan
+#	option src_mac	00:11:22:33:44:66
+#	option target	REJECT
+
+# block incoming ICMP traffic on a zone
+#config rule
+#	option src		lan
+#	option proto	ICMP
+#	option target	DROP
+
+# port redirect port coming in on wan to lan
+#config redirect
+#	option src			wan
+#	option src_dport	80
+#	option dest			lan
+#	option dest_ip		192.168.16.235
+#	option dest_port	80
+#	option proto		tcp
+
+# port redirect of remapped ssh port (22001) on wan
+#config redirect
+#	option src		wan
+#	option src_dport	22001
+#	option dest		lan
+#	option dest_port	22
+#	option proto		tcp
+
+### FULL CONFIG SECTIONS
+#config rule
+#	option src		lan
+#	option src_ip	192.168.45.2
+#	option src_mac	00:11:22:33:44:55
+#	option src_port	80
+#	option dest		wan
+#	option dest_ip	194.25.2.129
+#	option dest_port	120
+#	option proto	tcp
+#	option target	REJECT
+
+#config redirect
+#	option src		lan
+#	option src_ip	192.168.45.2
+#	option src_mac	00:11:22:33:44:55
+#	option src_port		1024
+#	option src_dport	80
+#	option dest_ip	194.25.2.129
+#	option dest_port	120
+#	option proto	tcp
diff --git a/firewall/files/firewall.hotplug b/firewall/files/firewall.hotplug
new file mode 100644
index 0000000..f1eab00
--- /dev/null
+++ b/firewall/files/firewall.hotplug
@@ -0,0 +1,11 @@
+#!/bin/sh
+
+[ "$ACTION" = ifup -o "$ACTION" = ifupdate ] || exit 0
+[ "$ACTION" = ifupdate -a -z "$IFUPDATE_ADDRESSES" -a -z "$IFUPDATE_DATA" ] && exit 0
+
+/etc/init.d/firewall enabled || exit 0
+
+fw3 -q network "$INTERFACE" >/dev/null || exit 0
+
+logger -t firewall "Reloading firewall due to $ACTION of $INTERFACE ($DEVICE)"
+fw3 -q reload
diff --git a/firewall/files/firewall.init b/firewall/files/firewall.init
new file mode 100755
index 0000000..ee3ed1a
--- /dev/null
+++ b/firewall/files/firewall.init
@@ -0,0 +1,61 @@
+#!/bin/sh /etc/rc.common
+
+START=19
+USE_PROCD=1
+QUIET=""
+
+validate_firewall_redirect()
+{
+	uci_validate_section firewall redirect "${1}" \
+		'proto:or(uinteger, string)' \
+		'src:string' \
+		'src_ip:cidr' \
+		'src_dport:or(port, portrange)' \
+		'dest:string' \
+		'dest_ip:cidr' \
+		'dest_port:or(port, portrange)' \
+		'target:or("SNAT", "DNAT")'
+}
+
+validate_firewall_rule()
+{
+	uci_validate_section firewall rule "${1}" \
+		'proto:or(uinteger, string)' \
+		'src:string' \
+		'dest:string' \
+		'src_port:or(port, portrange)' \
+		'dest_port:or(port, portrange)' \
+		'target:string'
+}
+
+service_triggers() {
+	procd_add_reload_trigger firewall	
+
+	procd_open_validate
+	validate_firewall_redirect
+	validate_firewall_rule
+	procd_close_validate
+}
+
+restart() {
+	fw3 restart
+}
+
+start_service() {
+	fw3 ${QUIET} start
+}
+
+stop_service() {
+	fw3 flush
+}
+
+reload_service() {
+	fw3 reload
+}
+
+boot() {
+	# Be silent on boot, firewall might be started by hotplug already,
+	# so don't complain in syslog.
+	QUIET=-q
+	start
+}
diff --git a/firewall/files/firewall.user b/firewall/files/firewall.user
new file mode 100644
index 0000000..6f79906
--- /dev/null
+++ b/firewall/files/firewall.user
@@ -0,0 +1,7 @@
+# This file is interpreted as shell script.
+# Put your custom iptables rules here, they will
+# be executed with each firewall (re-)start.
+
+# Internal uci firewall chains are flushed and recreated on reload, so
+# put custom rules into the root chains e.g. INPUT or FORWARD or into the
+# special user chains, e.g. input_wan_rule or postrouting_lan_rule.