help pf.conf protection

[ualleson 1]

I made the protection on my freebsd using pf.conf compiling kenel
Anyone know if this and so enough to prevent invasion

esse e meu pf

ext_if = "nfe0"

service_ports = "{ 22, 80}"

game_ports = "{11002,13099,13009,13011,13013,13015,13002,13005,13006,13007,13001,13003,13004}"

table <trusted_hosts> const {127.0.0.1 , }

table <abusive_hosts> persist

set block-policy drop
set loginterface $ext_if
set skip on lo

scrub on $ext_if reassemble tcp no-df random-id

antispoof quick for { lo0 $ext_if }

block in

pass out all keep state
pass out on $ext_if all modulate state

pass in quick from <trusted_hosts>
block in quick from <abusive_hosts>

pass in inet proto icmp all icmp-type echoreq

pass in on $ext_if proto tcp to any port $service_ports flags S/SA keep state (max-src-conn 30, max-src-conn-rate 15/5, overload <abusive_hosts> flush)

pass in on $ext_if proto {tcp,udp} to any port $game_ports flags S/SA keep state (max-src-conn 30, max-src-conn-rate 15/5, overload <abusive_hosts> flush)
 

if anyone knows another and please inform me