initialised FAQ

doc/FAQ.md

@@ -0,0 +1,42 @@
+Frequently Asked Questions
+==========================
+
+When something doesn't work, look up here... and if it still
+doesn't work, report how what was suggested here went.
+
+It's also worth reading [how to ask
+questions](http://www.catb.org/~esr/faqs/smart-questions.html)
+before posting on the mailing list or opening an issue in
+Github.
+
+Getting more info
+=================
+
+In general, if something doesn't work, you'll want to run
+`sslh` with lots of logging, and the logging directly in
+the terminal (Otherwise, logs are sent to `syslog`, and
+usually end up in `/var/log/auth.log`). You will achieve
+this by running `sslh` in foreground with verbose:
+
+```
+sslh -v 1 -f -F myconfig.cfg
+```
+
+Higher values of `verbose` produce more information. 1 is
+usually sufficient. 2 will also print incoming packets used
+for probing.
+
+forward to [PROBE] failed:connect: Connection refused
+=====================================================
+
+Usually this means `sslh` is configured to forward a
+protocol somewhere, but no service is listening on the
+target address. Check your `sslh` configuration, check the
+corresponding server really is listening and running.
+Finally, check the server is listening where you expect it
+to:
+
+```
+netstat -lpt
+```
+