Rdr pass on en1 inet proto tcp from any to any port 80 -> 127.0.0.1 port 9191 Rdr pass on en0 inet proto tcp from any to any port 80 -> 127.0.0.1 port 9191 Rdr pass on lo0 inet proto tcp from any to self port 80 -> 127.0.0.1 port 9191 The new method using pf is a little more involved:Ģ. With macOS Yosemite, ipfw has been removed from the Mac OS X build completely, so running the above command will result in a ‘command not found’ error message. If you are happy configuring this using another method, and it’s working successfully then please feel free to continue to use that method, and also if you’d like to leave a note in the comments with your method, that’d be great! Note that this is an OS-level function, so there are many ways to get this configured. to access the User Web Page, without having to specify a port. This will allow users to navigate to e.g. When enabling port 80 and 443 on the Mac where the PaperCut App Server is running, it is necessary to use ipfw (IP Firewall) / pf (Packet Filter) to allow port forwarding.