I'm trying to block wireless clients in using my DHCP-server. The problem is that these clients are still able to retrieve IP-information from the DHCP-server. If I understand the hereby included pf.conf, everything (except UDP domain and TCP ssh) is blocked into entering $wir_if (which comes from $wir_if:network). Doesn't this also mean that an DHCP-request is blocked? Any suggestions in what I'm missing?
# macros ext_if = "fxp0" int_if = "fxp1" wir_if = "wi0"
ext_tcp = "{ ftp, smtp, https, imaps }"
wir_tcp = "{ ftp, ssh, http, https }"
icmp_types = "echoreq"priv_nets = "{ 127.0.0.0/8, 192.168.0.0/16, 172.16.0.0/12, 10.0.0.0/8 }"# options set block-policy return set loginterface $ext_if
# scrub scrub in all
# nat/rdr nat on $ext_if from $int_if:network to any -> ($ext_if) nat on $ext_if from $wir_if:network to any -> ($ext_if)
# filter rules block log all
pass quick on lo0 all
block drop in log quick on $ext_if from $priv_nets to any block drop out log quick on $ext_if from any to $priv_nets
pass in on $ext_if inet proto tcp from any to ($ext_if) port $ext_tcp flags S/SA keep state
pass in inet proto icmp all icmp-type $icmp_types keep state
pass in on $int_if from $int_if:network to any keep state pass out on $int_if from any to $int_if:network keep state
pass out on $ext_if proto tcp all modulate state flags S/SA
pass out on $ext_if proto { udp, icmp } all keep state# wireless pass in on $wir_if proto tcp from $wir_if:network to any port $wir_tcp keep state pass out on $wir_if from any to $wir_if:network keep state
block in log on $wir_if from $wir_if:network to $int_if:network block in log on $wir_if from $wir_if:network to $wir_if:network
pass in on $wir_if proto udp from $wir_if:network to $wir_if port = domain keep state pass in on $wir_if proto tcp from $wir_if:network to $wir_if port = ssh keep state
