Vagrant port fowarding with Yosemite/Mavericks

vagrant-port-forwarding.md

Vagrant Port Forwarding (8080 -> 80, 8443 -> 443) with pf on Mavericks/Yosemite/El-Cap

This guide is a fork from this gist.

Since Mavericks stopped using the deprecated ipfw (as of Mountain Lion), we'll be using pf to allow port forwarding.

1. Create the anchor file

Create an anchor file under /etc/pf.anchors/com.vagrant with your redirection rule like:
important note the trailing whitespace is nessesary

rdr pass on lo0 inet proto tcp from any to any port 80 -> 127.0.0.1 port 8080
rdr pass on lo0 inet proto tcp from any to any port 443 -> 127.0.0.1 port 8443
rdr pass on en0 inet proto tcp from any to any port 80 -> 127.0.0.1 port 8080
rdr pass on en0 inet proto tcp from any to any port 443 -> 127.0.0.1 port 8443
 

2. Test the anchor file

Parse and test your anchor file to make sure there are no errors:

sudo pfctl -vnf /etc/pf.anchors/com.vagrant

3. Reference the anchor in pf.conf

/etc/pf.conf is the main configuration file that pf loads at boot. We'll need to load the anchor file we previously created:

rdr-anchor "com.vagrant"
load anchor "com.vagrant" from "/etc/pf.anchors/com.vagrant"

Make sure to add these entries to the appropriate spot, like:

scrub-anchor "com.apple/*"
nat-anchor "com.apple/*"
rdr-anchor "com.apple/*"
rdr-anchor "com.vagrant"
dummynet-anchor "com.apple/*"
anchor "com.apple/*"
load anchor "com.apple" from "/etc/pf.anchors/com.apple"
load anchor "com.vagrant" from "/etc/pf.anchors/com.vagrant"

4. Load and enabling pf

pf is enabled by default in Yosemite, so if the above doesn't work, reload pf by running the following:

sudo pfctl -ef /etc/pf.conf

If above doesn't work:

run sysctl -w net.inet.ip.forwarding=1; resatrt your system, and do the bove steps again

Caution

There is the possibility that pf.conf will be overriden with updates to the OS. It might be best to create your own pf config file and load them in additon to the main pf.conf to prevent this.