Port Forwarding in Mac OS Yosemite+

1. Create Forwarding Rule

sudo vim /etc/pf.anchors/eclipse.tomcat.forwarding

content:

rdr pass on lo0 inet proto tcp from any to 127.0.0.1 port 80 -> 127.0.0.1 port 8080
rdr pass on lo0 inet proto tcp from any to 127.0.0.1 port 443 -> 127.0.0.1 port 8443

2. Reference the rule in Port Forwarding config

sudo vim /etc/pf-tomcat.conf

content:

rdr-anchor "forwarding"
load anchor "forwarding" from "/etc/pf.anchors/eclipse.tomcat.forwarding"

Note: put empty newline in the bottom of the file, or it won't work

3. Apply the Rule

sudo pfctl -ef /etc/pf-tomcat.conf

4. Stop the port forwarding rules

sudo pfctl -d