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pajtai/_ using pf on macs.md

Last active August 29, 2015 14:15
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Using pf for port forwarding on macs
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_ using pf on macs.md

Since ipfw is deprecated and removed on Yosemite and Maveriks, and there are no iptables on Mac you have to use pfctl for port forwarding.

This is important in Vagrant, where usually port 8080 is exposed, but you want to be able to use port 80 on your host browser.

Here is how to setup 80 <-> 8080 port forwarding on your mac (include empty lines at the end of each file... one of them is supposedly picky about it).

After adding the two files below as root, to start (enable) port forwarding do:

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

To stop (disable) port forwarding do:

sudo pfctl -d
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pf-vagrant.conf
# /etc/pf-vagrant.conf
rdr-anchor "forwarding"
load anchor "forwarding" from "/etc/pf.anchors/vagrant.forwarding"
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vagrant.forwarding
# /etc/pf.anchors/vagrant.forwarding
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
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