# You should have received a copy of the GNU General Public License
# along with this file. If not, see <http://www.gnu.org/licenses/>.
+# Undocumented (and not very well tested) feature. This drops the connection
+# after 5 seconds of inactivity. Thanks to shad0VV in #openssh on Freenode
+# (2012-11-04 18:40 CET) for telling me about this undocumented feature.
+#
+# ServerAliveCountMax 0
+# ServerAliveInterval 5
+
# Rules for all hosts.
Host *
# to local X11!
ForwardX11Trusted no
-# If -M is used store the control master socket in ~/.ssh. Necessary for
-# ControlMaster to work.
+# Allow using -M (ControlMaster) to create a master SSH session which
+# "tunnels" other connections to the same host, thus reducing the number of
+# authentications (which are relatively slow) and TCP connections.
ControlPath ~/.ssh/master-%l-%h-%p-%r
# Abort if not all requested port forwardings can be set up.