| 1 | wifi_if="wlan0"
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| 2 | all_node="172.31.255.1/32"
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| 3 |
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| 4 | wl_net="172.16.0.0/12"
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| 5 | vpn_net="172.17.64.0/28"
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| 6 | allow_ext_tcp="{22}"
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| 7 | allow_ext_udp="{161}"
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| 8 | allow_int_tcp="{22,53,80,3128}"
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| 9 | allow_int_udp="{53,131,161,12345}"
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| 10 | allow_int_udp_any="{67}"
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| 11 |
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| 12 | private="{ 10.0.0.0/8 , 192.168.0.0/16 }"
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| 13 |
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| 14 | # Nat the internet
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| 15 | nat on $ext_if from $wl_net to any port $publicnat -> ($ext_if)
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| 16 |
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| 17 | # Nat local wl access
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| 18 | nat on $int_if from $private to $wl_net -> ($int_if)
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| 19 |
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| 20 | # Block all
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| 21 | block in on $ext_if
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| 22 | pass in on $int_if
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| 23 |
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| 24 | # Allow wl access from access point (not yet reversed)
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| 25 | pass on $wifi_if from $wl_net to $wl_net
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| 26 |
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| 27 | # Block this device from wifi
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| 28 | block in on $wifi_if inet from any to $wifi_if
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| 29 | block inet from any to $all_node
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| 30 |
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| 31 | # Enable me to access anything
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| 32 | pass out on {$ext_if, $int_if, $wifi_if} keep state
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| 33 |
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| 34 | # Allow internet access from the network
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| 35 | pass in on $wifi_if inet proto tcp from $wl_net to any port $publicnat keep state
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| 36 | block in on $wifi_if inet proto tcp from $wl_net to $wifi_if port $publicnat
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| 37 | block in on $wifi_if inet proto tcp from $wl_net to $all_node port $publicnat
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| 38 |
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| 39 | # Allow directives
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| 40 | pass in on $ext_if inet proto tcp from any to $ext_if port $allow_ext_tcp keep state
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| 41 | pass in on $ext_if inet proto udp from any to $ext_if port $allow_ext_udp keep state
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| 42 |
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| 43 | pass in on $int_if inet proto tcp from $wl_net to $vpn_net port $allow_int_tcp keep state
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| 44 | pass in on $int_if inet proto udp from $wl_net to $vpn_net port $allow_int_udp keep state
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| 45 | pass in on $int_if inet proto icmp from $wl_net to $vpn_net keep state
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| 46 | pass in on $int_if inet proto udp from any to any port $allow_int_udp_any keep state
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| 47 |
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| 48 | pass in on $wifi_if inet proto tcp from $wl_net to $wl_net port $allow_int_tcp keep state
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| 49 | pass in on $wifi_if inet proto udp from $wl_net to $wl_net port $allow_int_udp keep state
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| 50 | pass in on $wifi_if inet proto icmp from $wl_net to $wl_net keep state
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| 51 | pass in on $wifi_if inet proto udp from any to any port $allow_int_udp_any keep state
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| 52 |
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| 53 | # Allow wl access from local network
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| 54 | pass on $ext_if from $private to $wl_net keep state
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| 55 |
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| 56 | # Make sure to block local network access from wl
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| 57 | block on $wifi_if from $wl_net to $private
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| 58 | block on $int_if from $wl_net to $private
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| 59 |
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