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 option network 'lan' option input ACCEPT option output ACCEPT option forward REJECT config zone option name wan option network 'wan' 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 # 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 fe80::/10 option src_port 547 option dest_ip fe80::/10 option dest_port 546 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 # 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 # allow IPsec/ESP and ISAKMP passthrough #config rule # option src wan # option dest lan # option protocol esp # option target ACCEPT #config rule # option src wan # option dest lan # option src_port 500 # option dest_port 500 # option proto udp # option target ACCEPT ### 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