I have a node running on a Pine64, and allow incoming connections to it by forwarding port 18080 on my router. Checking status on it would show 8(out)+x(in) connections, with x usually hanging around 30 or so.
Until Kovri is ready, I thought I would try running the node on Tor, and so followed the instructions at https://github.com/monero-project/monero#using-tor to run using torsocks, and seems to be working. However, I now always get 8(out)+0(in) connections. I'm guessing that is happening because incoming connections are using a different ip address that is not forwarded on my router. Any suggestions as to how to allow incoming, or is this the price you pay for using Tor?