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domenico
64
package/network/config/firewall/Makefile
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64
package/network/config/firewall/Makefile
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#
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# Copyright (C) 2013-2016 OpenWrt.org
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# Copyright (C) 2016 LEDE project
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#
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# This is free software, licensed under the GNU General Public License v2.
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# See /LICENSE for more information.
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#
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include $(TOPDIR)/rules.mk
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PKG_NAME:=firewall
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PKG_RELEASE:=3
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PKG_SOURCE_PROTO:=git
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PKG_SOURCE_URL=$(PROJECT_GIT)/project/firewall3.git
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PKG_SOURCE_DATE:=2022-02-17
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PKG_SOURCE_VERSION:=4cd7d4f36bea731bf901cb067456f1d460294926
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PKG_MIRROR_HASH:=d48a1937328b4a46b4771839d7f281a0e95e024169caa02253fc216a0907d0b9
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PKG_MAINTAINER:=Jo-Philipp Wich <jo@mein.io>
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PKG_LICENSE:=ISC
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PKG_CONFIG_DEPENDS := CONFIG_IPV6
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PKG_BUILD_FLAGS:=gc-sections lto
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include $(INCLUDE_DIR)/package.mk
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include $(INCLUDE_DIR)/cmake.mk
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define Package/firewall
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SECTION:=net
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CATEGORY:=Base system
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TITLE:=OpenWrt C Firewall
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DEPENDS:=+libubox +libubus +libuci +libip4tc +IPV6:libip6tc +libiptext +IPV6:libiptext6 +libxtables +kmod-ipt-core +kmod-ipt-conntrack +IPV6:kmod-nf-conntrack6 +kmod-ipt-nat
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PROVIDES:=uci-firewall
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CONFLICTS:=firewall4
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endef
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define Package/firewall/description
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This package provides a config-compatible C implementation of the UCI firewall.
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endef
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define Package/firewall/conffiles
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/etc/config/firewall
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/etc/firewall.user
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endef
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CMAKE_OPTIONS += $(if $(CONFIG_IPV6),,-DDISABLE_IPV6=1)
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define Package/firewall/install
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$(INSTALL_DIR) $(1)/sbin
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$(INSTALL_BIN) $(PKG_BUILD_DIR)/firewall3 $(1)/sbin/fw3
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$(INSTALL_DIR) $(1)/etc/init.d
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$(INSTALL_BIN) ./files/firewall.init $(1)/etc/init.d/firewall
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$(INSTALL_DIR) $(1)/etc/hotplug.d/iface
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$(INSTALL_CONF) ./files/firewall.hotplug $(1)/etc/hotplug.d/iface/20-firewall
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$(INSTALL_DIR) $(1)/etc/config/
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$(INSTALL_CONF) ./files/firewall.config $(1)/etc/config/firewall
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$(INSTALL_DIR) $(1)/etc/
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$(INSTALL_CONF) ./files/firewall.user $(1)/etc/firewall.user
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$(INSTALL_DIR) $(1)/usr/share/fw3
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$(INSTALL_CONF) $(PKG_BUILD_DIR)/helpers.conf $(1)/usr/share/fw3
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endef
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$(eval $(call BuildPackage,firewall))
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206
package/network/config/firewall/files/firewall.config
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206
package/network/config/firewall/files/firewall.config
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config defaults
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option syn_flood 1
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option input REJECT
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option output ACCEPT
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option forward REJECT
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# Uncomment this line to disable ipv6 rules
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# option disable_ipv6 1
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config zone
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option name lan
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list network 'lan'
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option input ACCEPT
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option output ACCEPT
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option forward ACCEPT
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config zone
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option name wan
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list network 'wan'
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list network 'wan6'
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option input REJECT
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option output ACCEPT
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option forward REJECT
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option masq 1
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option mtu_fix 1
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config forwarding
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option src lan
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option dest wan
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# We need to accept udp packets on port 68,
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# see https://dev.openwrt.org/ticket/4108
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config rule
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option name Allow-DHCP-Renew
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option src wan
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option proto udp
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option dest_port 68
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option target ACCEPT
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option family ipv4
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# Allow IPv4 ping
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config rule
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option name Allow-Ping
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option src wan
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option proto icmp
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option icmp_type echo-request
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option family ipv4
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option target ACCEPT
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config rule
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option name Allow-IGMP
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option src wan
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option proto igmp
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option family ipv4
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option target ACCEPT
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# Allow DHCPv6 replies
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# see https://github.com/openwrt/openwrt/issues/5066
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config rule
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option name Allow-DHCPv6
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option src wan
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option proto udp
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option dest_port 546
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option family ipv6
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option target ACCEPT
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config rule
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option name Allow-MLD
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option src wan
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option proto icmp
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option src_ip fe80::/10
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list icmp_type '130/0'
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list icmp_type '131/0'
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list icmp_type '132/0'
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list icmp_type '143/0'
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option family ipv6
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option target ACCEPT
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# Allow essential incoming IPv6 ICMP traffic
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config rule
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option name Allow-ICMPv6-Input
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option src wan
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option proto icmp
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list icmp_type echo-request
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list icmp_type echo-reply
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list icmp_type destination-unreachable
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list icmp_type packet-too-big
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list icmp_type time-exceeded
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list icmp_type bad-header
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list icmp_type unknown-header-type
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list icmp_type router-solicitation
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list icmp_type neighbour-solicitation
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list icmp_type router-advertisement
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list icmp_type neighbour-advertisement
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option limit 1000/sec
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option family ipv6
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option target ACCEPT
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# Allow essential forwarded IPv6 ICMP traffic
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config rule
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option name Allow-ICMPv6-Forward
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option src wan
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option dest *
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option proto icmp
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list icmp_type echo-request
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list icmp_type echo-reply
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list icmp_type destination-unreachable
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list icmp_type packet-too-big
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list icmp_type time-exceeded
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list icmp_type bad-header
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list icmp_type unknown-header-type
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option limit 1000/sec
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option family ipv6
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option target ACCEPT
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config rule
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option name Allow-IPSec-ESP
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option src wan
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option dest lan
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option proto esp
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option target ACCEPT
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config rule
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option name Allow-ISAKMP
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option src wan
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option dest lan
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option dest_port 500
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option proto udp
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option target ACCEPT
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# allow interoperability with traceroute classic
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# note that traceroute uses a fixed port range, and depends on getting
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# back ICMP Unreachables. if we're operating in DROP mode, it won't
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# work so we explicitly REJECT packets on these ports.
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config rule
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option name Support-UDP-Traceroute
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option src wan
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option dest_port 33434:33689
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option proto udp
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option family ipv4
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option target REJECT
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option enabled false
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# include a file with users custom iptables rules
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config include
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option path /etc/firewall.user
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### EXAMPLE CONFIG SECTIONS
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# do not allow a specific ip to access wan
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#config rule
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# option src lan
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# option src_ip 192.168.45.2
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# option dest wan
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# option proto tcp
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# option target REJECT
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# block a specific mac on wan
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#config rule
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# option dest wan
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# option src_mac 00:11:22:33:44:66
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# option target REJECT
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# block incoming ICMP traffic on a zone
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#config rule
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# option src lan
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# option proto ICMP
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# option target DROP
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# port redirect port coming in on wan to lan
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#config redirect
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# option src wan
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# option src_dport 80
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# option dest lan
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# option dest_ip 192.168.16.235
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# option dest_port 80
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# option proto tcp
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# port redirect of remapped ssh port (22001) on wan
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#config redirect
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# option src wan
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# option src_dport 22001
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# option dest lan
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# option dest_port 22
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# option proto tcp
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### FULL CONFIG SECTIONS
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#config rule
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# option src lan
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# option src_ip 192.168.45.2
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# option src_mac 00:11:22:33:44:55
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# option src_port 80
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# option dest wan
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# option dest_ip 194.25.2.129
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# option dest_port 120
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# option proto tcp
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# option target REJECT
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#config redirect
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# option src lan
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# option src_ip 192.168.45.2
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# option src_mac 00:11:22:33:44:55
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# option src_port 1024
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# option src_dport 80
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# option dest_ip 194.25.2.129
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# option dest_port 120
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# option proto tcp
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11
package/network/config/firewall/files/firewall.hotplug
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11
package/network/config/firewall/files/firewall.hotplug
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#!/bin/sh
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[ "$ACTION" = ifup -o "$ACTION" = ifupdate ] || exit 0
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[ "$ACTION" = ifupdate -a -z "$IFUPDATE_ADDRESSES" -a -z "$IFUPDATE_DATA" ] && exit 0
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/etc/init.d/firewall enabled || exit 0
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fw3 -q network "$INTERFACE" >/dev/null || exit 0
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logger -t firewall "Reloading firewall due to $ACTION of $INTERFACE ($DEVICE)"
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fw3 -q reload
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61
package/network/config/firewall/files/firewall.init
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61
package/network/config/firewall/files/firewall.init
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#!/bin/sh /etc/rc.common
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START=19
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USE_PROCD=1
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QUIET=""
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validate_firewall_redirect()
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{
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uci_validate_section firewall redirect "${1}" \
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'proto:or(uinteger, string)' \
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'src:string' \
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'src_ip:cidr' \
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'src_dport:or(port, portrange)' \
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'dest:string' \
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'dest_ip:cidr' \
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'dest_port:or(port, portrange)' \
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'target:or("SNAT", "DNAT")'
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}
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validate_firewall_rule()
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{
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uci_validate_section firewall rule "${1}" \
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'proto:or(uinteger, string)' \
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'src:string' \
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'dest:string' \
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'src_port:or(port, portrange)' \
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'dest_port:or(port, portrange)' \
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'target:string'
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}
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service_triggers() {
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procd_add_reload_trigger firewall
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procd_open_validate
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validate_firewall_redirect
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validate_firewall_rule
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procd_close_validate
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}
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restart() {
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fw3 restart
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}
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start_service() {
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fw3 ${QUIET} start
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}
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stop_service() {
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fw3 flush
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}
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reload_service() {
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fw3 reload
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}
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boot() {
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# Be silent on boot, firewall might be started by hotplug already,
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# so don't complain in syslog.
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QUIET=-q
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start
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}
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7
package/network/config/firewall/files/firewall.user
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7
package/network/config/firewall/files/firewall.user
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# This file is interpreted as shell script.
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# Put your custom iptables rules here, they will
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# be executed with each firewall (re-)start.
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# Internal uci firewall chains are flushed and recreated on reload, so
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# put custom rules into the root chains e.g. INPUT or FORWARD or into the
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# special user chains, e.g. input_wan_rule or postrouting_lan_rule.
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