[tor-project] support the torproject with bridges

[Felix]

Hi David

Thanks for the guidance.

> Felix, we usually ask operators of default bridges to configure these
> settings in torrc:
> 	AssumeReachable 1
Done.

> 	BridgeRelay 1
Was already done.

> 	ExtORPort auto
I set my jail IP and port here.

> In addition, it is best if you use a firewall to block the bridge's
> regular ORPort (while leaving the obfs4 port unblocked). Blocking the
> bridge's ORPort is a hack to prevent the bridge from being included in
> BridgeDB, which eliminates a couple of ways a censor might discover and
> block the bridge: 1) by enumerating BridgeDB, and 2) by fingerprinting
> plain-Tor connections to the bridge's IP address (made by users who
> discovered the plain-Tor port through BridgeDB).
Done.

All is restarted and TBB obfs4 connects still fine.

I have set up some Fallbacks of my own choise for the bridges. ok ?

The bridges nat's to real guard IPs. A mid relay will never see the 
bridges IP. ok ?

-- 
Cheers, Felix