diff --git a/README.md b/README.md
index 784aa5b..714c27c 100644
--- a/README.md
+++ b/README.md
@@ -283,13 +283,15 @@ ssh_j()
 {
 	local pw
 	pw=$1
-	[[ -z $pwd ]] && { pw=$(head -c32 </dev/urandom | base64); pw=${pw:0:12}; }
-	echo "Press Ctrl-C to stop this tunnel."
-	echo -e "To connect to this host: \e[0;36mssh -J ${pw,,}@ssh-j.com ${USER:-root}@${pw,,}\e[0m"
-	ssh -o StrictHostKeyChecking=accept-new -o ServerAliveInterval=30 ${pw,,}@ssh-j.com -N -R ${pw,,}:22:${2:-0}:${3:-22}
+   [[ -z $pw ]] && { pw=$(head -c64 </dev/urandom | base64 | tr -d -c a-z0-9); pw=${pw:0:12}; }
+   echo "Press Ctrl-C to stop this tunnel."
+	echo -e "To connect to this host: \e[0;36mssh -J ${pw}@ssh-j.com ${USER:-root}@${pw}\e[0m"
+	ssh -o StrictHostKeyChecking=accept-new -o ServerAliveInterval=30 -o ExitOnForwardFailure=yes ${pw}@ssh-j.com -N -R ${pw}:22:${2:-0}:${3:-22}
 }
-# Generates a random tunnel ID [e.g. 5dmxf27tl4kx] and keeps the tunnel connected.
-ssh_j
+
+ssh_j                                 # Generates a random tunnel ID [e.g. 5dmxf27tl4kx] and keeps the tunnel connected
+ssh_j foobarblahblub                  # Creates tunnel with specific tunnel ID
+ssh_j foobarblahblub 192.168.0.1 2222 # Tunnel to some other host on the LAN
 ```
 
 Then use this command from anywhere else in the world to connect as 'root' to '5dmxf27tl4kx' (the host behind the NAT):