Redirect traffic from port 80 to any port on Mac OS

no-root-port-80-macos.md

Redirect traffic from port 80/443 to any port on Mac OS

This allows you to access your application on port 80 without root access on Mac OS.

Non-SSL traffic

1. First, define wich ports you want to redirect to

NON_SSL_PORT=8080

2. Then, enable the redirecting rule

echo "\
rdr pass inet proto tcp from any to any port 80 -> 127.0.0.1 port $NON_SSL_PORT\
" | sudo pfctl -ef -

SSL traffic

1. First, define wich port you want to redirect to

SSL_PORT=8443

2. Then, enable the redirection rule

echo "\
rdr pass inet proto tcp from any to any port 443 -> 127.0.0.1 port $SSL_PORT\
" | sudo pfctl -ef -

To list current rules

sudo pfctl -s nat

To remove all rules

sudo pfctl -F all -f /etc/pf.conf

Taken from https://salferrarello.com/mac-pfctl-port-forwarding/