| 1 | #
|
|---|
| 2 | # Wireless Leiden PF firewall configuration for iLeiden Node.
|
|---|
| 3 | #
|
|---|
| 4 | # N.B: The features points are shared between all firewall configurations to
|
|---|
| 5 | # make comparisions more easy to do
|
|---|
| 6 | #
|
|---|
| 7 | # 5) The Wireless Leiden facing interfaces are not firewalled.
|
|---|
| 8 | # 6) WL Captive Portal Support for interfaces who needs it.
|
|---|
| 9 | # 9) Protect the Wireless Network from junk traffic.
|
|---|
| 10 | #
|
|---|
| 11 | # Rick van der Zwet <rick@wirelessleiden.nl>
|
|---|
| 12 | #
|
|---|
| 13 |
|
|---|
| 14 | # Global standards. NOT to be edited.
|
|---|
| 15 | wl_net="172.16.0.0/12"
|
|---|
| 16 | private="{ 10.0.0.0/8, 172.16.0.0/12 192.168.0.0/16 }"
|
|---|
| 17 | ileiden_ports="http,https"
|
|---|
| 18 | publicnat="http,https"
|
|---|
| 19 |
|
|---|
| 20 | # Default configuration for ALIX2 with ue0 as public interface and wlan0 as
|
|---|
| 21 | # the public accesspoint in iLeiden setup.
|
|---|
| 22 | captive_portal_interfaces="ue0, wlan0"
|
|---|
| 23 |
|
|---|
| 24 | # Table used to authorized hosts (6)
|
|---|
| 25 | table <wlportal> persist counters
|
|---|
| 26 |
|
|---|
| 27 | # Always be nice, and return the fact we are blocking the packets
|
|---|
| 28 | set block-policy return
|
|---|
| 29 |
|
|---|
| 30 | # Redirect user to captive portal they have not clicked OK yet (6)
|
|---|
| 31 | no rdr on { $captive_portal_interfaces } proto tcp from <wlportal> to !$wl_net port 80
|
|---|
| 32 | rdr on { $captive_portal_interfaces } proto tcp from $wl_net to !$wl_net port 80 -> 172.31.255.1 port 8081
|
|---|
| 33 |
|
|---|
| 34 | # Localhost is considered safe (5)
|
|---|
| 35 | pass quick on lo0 all
|
|---|
| 36 |
|
|---|
| 37 | # By default all interfaces are open (5)
|
|---|
| 38 | pass all
|
|---|
| 39 |
|
|---|
| 40 | # By default deny all outgoing traffic to avoid systems spamming the network (9)
|
|---|
| 41 | block in on { $captive_portal_interfaces } from any to !$wl_net
|
|---|
| 42 |
|
|---|
| 43 | # Quickly drop out, with nice return value, avoiding endless connections on portal setup (6)
|
|---|
| 44 | block return in quick on { $captive_portal_interfaces } proto tcp from !<wlportal> to !$wl_net port { $publicnat }
|
|---|
| 45 |
|
|---|
| 46 | # Note: not even HTTPS traffic allowed for those who has not clicked OK yet (6)
|
|---|
| 47 | pass in on { $captive_portal_interfaces } proto tcp from <wlportal> to !$wl_net port { $ileiden_ports } keep state
|
|---|
