Hi. I've configured my bridge to support obfs3 and obfs4 transports using the debian obfs4proxy package from http://deb.torproject.org/torproject.org. Connecting to the bridge using TBB 4.5a4 works for obfs3 but not obfs4. TBB produces this error: [warn] Proxy Client: unable to connect to x.x.x.x:41980 ("server rejected connection") The bridge line I am supplying to TBB looks like: bridge obfs4 x.x.x.x:41980 On the bridge side, it looks like the bridge is listening for obfs3 and obfs4 via the following log entries: Tor[21544]: Registered server transport 'obfs3' at '[::]:51161' Tor[21544]: Registered server transport 'obfs4' at '[::]:41980' The relevant parts of my bridge config are: ORPort 443 ExtORPort auto BridgeRelay 1 ServerTransportPlugin obfs3,obfs4 exec /usr/bin/obfs4proxy Should this be working? How can I troubleshoot this? Thanks! hope you are well tim -- Tim Sammut ~ @t1msammut ~ tim@teamsammut.com