Error in communication between interfaces
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 Hello 
 Please, forgive me for my bad english.
 I'm trying to do the computers on DMZ network connect the computers on SEC network. However, I'm not having success.
 LAN network to SEC network works perfectly.
 I believe that my rules are correct. Can confirm?My interfaces: 
 WAN
 SEC: 192.168.10.0/24
 LAN: 172.16.0.0/16
 DMZ: 172.18.0.0/16-> Below are pictures to illustrate Thansk. DMZ Rules 
  SEC Rules 
  LAN Rules 
  PING (from 172.18.0.11): 
  
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 What's your netstat -rn output? 
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 Destino Roteador MáscaraGen. Opções MSS Janela irtt Iface 
 0.0.0.0 172.18.0.1 0.0.0.0 UG 0 0 0 eth0
 172.18.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0
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 Are you able to ping from a SEC device to a DMZ device? What about from the DMZ interface to the SEC network (within pfSense in Diagnostics -> Ping)?