[MacOS] 如何在MacOSX EI Capitan做Port Forwarding

由於在MacOS上裝了Tomcat，而Tomcat的Default Port為8080，若想將80Port的Request轉到8080 Port，則可使用以下Command。

• Forwaring Port 80 to 8080
  
  #echo "rdr pass inet proto tcp from any to any port 80 -> 127.0.0.1 port 8080" | sudo pfctl -ef -
  
  
• Remove Port Forwarding
  
  #sudo pfctl -F all -f /etc/pf.conf
  
  
• Show Rule
  #sudo pfctl -s nat
  
  

Reference:
[1] Mac pfctl Port Forwarding