Jenkins Port Forwarding (8080 -> 80) with
pf on Mavericks/Yosemite
This guide is a fork from this gist. I've added minor adjustments to customise these rules to forward connections from an outsite interface like en0.
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.jenkins with your redirection rule like:
rdr pass on en0 inet proto tcp from any to any port 80 -> 127.0.0.1 port 8080
P.S. Make sure to add a newline at the end of this file.
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.jenkins
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.jenkins" load anchor "com.jenkins" from "/etc/pf.anchors/com.jenkins"
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.jenkins" dummynet-anchor "com.apple/*" anchor "com.apple/*" load anchor "com.apple" from "/etc/pf.anchors/com.apple" load anchor "com.jenkins" from "/etc/pf.anchors/com.jenkins"
4. Load and enabling pf
pf is not enabled by default in Mavericks, few ways to enable this:
Manually load and enable from a pf.conf file via
sudo pfctl -ef /etc/pf.conf
Auto enable by adding an
-e(enable) to the
<key>ProgramArguments</key> <array> <string>pfctl</string> <string>-e</string> <string>-f</string> <string>/etc/pf.conf</string> </array>
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.