The docs were updated with instructions on how to enable ssh over local network see here.
git checkout 0.7-rc1
When prompted for
Enable SSH over Tor, enter no, and run:
You might be prompted by the installer to run
./securedrop-admin install again. If so, please do. Finally, run:
You should now be able to administer your SecureDrop instance by ssh over local network.
As for testing the rate limiting, try to ssh using the server’s IP, with an incorrect user name. If you do it several times, you should be locked out for a few minutes.