diff --git a/.ssh/config b/.ssh/config
index 7585444..f898be7 100644
--- a/.ssh/config
+++ b/.ssh/config
@@ -11,4 +11,7 @@ Host *
 	ControlPath ~/.ssh/cm/%j-%r@%n:%p
 	ControlPersist 30m
 	ControlMaster auto
+	HashKnownHosts yes
 	PreferredAuthentications publickey,keyboard-interactive,password
+	ClientAliveInterval 30
+	ClientAliveCountMax 3