Hosting a (private) (obfuscated) bridge or (exit) relay
You can still volunteer to Tor and host a bridge, private bridge, obfuscated bridge, private obfuscated bridge, middle node or exit relay when you are using Whonix. Either inside the Whonix-Gateway or directly on the host.
Outside the Whonix-Gateway
KVM For KVM, follow the NAT port forwarding instructions for Whonix-Gateway. 
Inside the Whonix-Gateway
This chapter hasn't been tested for a long time. Get in contact if you are interested in this configuration.
Simply follow all the usual instructions given on torproject.org inside the Whonix-Gateway just as you would, if Tor wouldn't run inside a virtual machine. The only additional thing to do is to set up a port forwarding from the host to the virtual machine. That is simple. It is a VirtualBox feature. You can also do this with the VirtualBox graphical user interface. Go to Whonix-Gateway -> Settings -> Network Interface -> Port Forwarding.
What's left are the firewall rules. On the Whonix-Gateway look at . Read the introduction comment (which is about Whonix flexible modular configuration files) and Tor Relay Settings.
Modify Whonix User Firewall Settings
Paste the following content. Adjust if necessary.
## Allow incoming DIRPORT connections for an optional Tor relay. GATEWAY_ALLOW_INCOMING_DIR_PORT=1 ## Allow incoming ORPORT connections for an optional Tor relay. GATEWAY_ALLOW_INCOMING_OR_PORT=1 ## DIRPORT incoming port. DIR_PORT=80 ## ORPORT incoming port. OR_PORT=443
Reload Whonix-Gateway Firewall.
Other Easy Options
As a Firefox or Chrome browser / Chromium user, install an add-on to create a "flash" proxy bridge. "Flash" as in flashing proxy, not as in Adobe Flash. This has nothing to do with Adobe Flash.
For Chrome browser / Chromium, there is cupcake. Simply click to install the add-on and you're done.
For Firefox browser, there is Tor Flashproxy Badge. Simply click to install the add-on and you're done.
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