root/etc/config/firewall

   1 config defaults
   2         option syn_flood        1
   3         option input            ACCEPT
   4         option output           ACCEPT
   5         option forward          REJECT
   6 # Uncomment this line to disable ipv6 rules
   7 #       option disable_ipv6     1
   8
   9 config zone
  10         option name             lan
  11         list   network          'lan'
  12         option input            ACCEPT
  13         option output           ACCEPT
  14         option forward          ACCEPT
  15
  16 config zone
  17         option name             wan
  18         list   network          'wan'
  19         list   network          'wan6'
  20         option input            REJECT
  21         option output           ACCEPT
  22         option forward          REJECT
  23         option masq             1
  24         option mtu_fix          1
  25
  26 config forwarding
  27         option src              lan
  28         option dest             wan
  29
  30 # We need to accept udp packets on port 68,
  31 # see https://dev.openwrt.org/ticket/4108
  32 config rule
  33         option name             Allow-DHCP-Renew
  34         option src              wan
  35         option proto            udp
  36         option dest_port        68
  37         option target           ACCEPT
  38         option family           ipv4
  39
  40 # Allow IPv4 ping
  41 config rule
  42         option name             Allow-Ping
  43         option src              wan
  44         option proto            icmp
  45         option icmp_type        echo-request
  46         option family           ipv4
  47         option target           ACCEPT
  48
  49 config rule
  50         option name             Allow-IGMP
  51         option src              wan
  52         option proto            igmp
  53         option family           ipv4
  54         option target           ACCEPT
  55
  56 # Allow DHCPv6 replies
  57 # see https://dev.openwrt.org/ticket/10381
  58 config rule
  59         option name             Allow-DHCPv6
  60         option src              wan
  61         option proto            udp
  62         option src_ip           fc00::/6
  63         option dest_ip          fc00::/6
  64         option dest_port        546
  65         option family           ipv6
  66         option target           ACCEPT
  67
  68 config rule
  69         option name             Allow-MLD
  70         option src              wan
  71         option proto            icmp
  72         option src_ip           fe80::/10
  73         list icmp_type          '130/0'
  74         list icmp_type          '131/0'
  75         list icmp_type          '132/0'
  76         list icmp_type          '143/0'
  77         option family           ipv6
  78         option target           ACCEPT
  79
  80 # Allow essential incoming IPv6 ICMP traffic
  81 config rule
  82         option name             Allow-ICMPv6-Input
  83         option src              wan
  84         option proto    icmp
  85         list icmp_type          echo-request
  86         list icmp_type          echo-reply
  87         list icmp_type          destination-unreachable
  88         list icmp_type          packet-too-big
  89         list icmp_type          time-exceeded
  90         list icmp_type          bad-header
  91         list icmp_type          unknown-header-type
  92         list icmp_type          router-solicitation
  93         list icmp_type          neighbour-solicitation
  94         list icmp_type          router-advertisement
  95         list icmp_type          neighbour-advertisement
  96         option limit            1000/sec
  97         option family           ipv6
  98         option target           ACCEPT
  99
 100 # Allow essential forwarded IPv6 ICMP traffic
 101 config rule
 102         option name             Allow-ICMPv6-Forward
 103         option src              wan
 104         option dest             *
 105         option proto            icmp
 106         list icmp_type          echo-request
 107         list icmp_type          echo-reply
 108         list icmp_type          destination-unreachable
 109         list icmp_type          packet-too-big
 110         list icmp_type          time-exceeded
 111         list icmp_type          bad-header
 112         list icmp_type          unknown-header-type
 113         option limit            1000/sec
 114         option family           ipv6
 115         option target           ACCEPT
 116
 117 config rule
 118         option name             Allow-IPSec-ESP
 119         option src              wan
 120         option dest             lan
 121         option proto            esp
 122         option target           ACCEPT
 123
 124 config rule
 125         option name             Allow-ISAKMP
 126         option src              wan
 127         option dest             lan
 128         option dest_port        500
 129         option proto            udp
 130         option target           ACCEPT
 131
 132
 133 ### EXAMPLE CONFIG SECTIONS
 134 # do not allow a specific ip to access wan
 135 #config rule
 136 #       option src              lan
 137 #       option src_ip   192.168.45.2
 138 #       option dest             wan
 139 #       option proto    tcp
 140 #       option target   REJECT
 141
 142 # block a specific mac on wan
 143 #config rule
 144 #       option dest             wan
 145 #       option src_mac  00:11:22:33:44:66
 146 #       option target   REJECT
 147
 148 # block incoming ICMP traffic on a zone
 149 #config rule
 150 #       option src              lan
 151 #       option proto    ICMP
 152 #       option target   DROP
 153
 154 # port redirect port coming in on wan to lan
 155 #config redirect
 156 #       option src                      wan
 157 #       option src_dport        80
 158 #       option dest                     lan
 159 #       option dest_ip          192.168.16.235
 160 #       option dest_port        80
 161 #       option proto            tcp
 162
 163 # port redirect of remapped ssh port (22001) on wan
 164 #config redirect
 165 #       option src              wan
 166 #       option src_dport        22001
 167 #       option dest             lan
 168 #       option dest_port        22
 169 #       option proto            tcp
 170
 171 ### FULL CONFIG SECTIONS
 172 #config rule
 173 #       option src              lan
 174 #       option src_ip   192.168.45.2
 175 #       option src_mac  00:11:22:33:44:55
 176 #       option src_port 80
 177 #       option dest             wan
 178 #       option dest_ip  194.25.2.129
 179 #       option dest_port        120
 180 #       option proto    tcp
 181 #       option target   REJECT
 182
 183 #config redirect
 184 #       option src              lan
 185 #       option src_ip   192.168.45.2
 186 #       option src_mac  00:11:22:33:44:55
 187 #       option src_port         1024
 188 #       option src_dport        80
 189 #       option dest_ip  194.25.2.129
 190 #       option dest_port        120
 191 #       option proto    tcp