I have these rules:
drop ICMP $HOME_NET any -> $TREX_NET any (msg:"ping dropeado ";sid: 200002;rev:1;)
pass ICMP $TREX_NET any -> $HOME_NET any (msg:"ping trex a home net";sid:200008;)
so I want to block home net to Trex net but I want to receive pings from Trex net to Home net
but with this config, the two ways are allowed