diff --git a/README.md b/README.md
index 7417c8d..0eca8a2 100644
--- a/README.md
+++ b/README.md
@@ -77,3 +77,23 @@ disown
 exit 0
 ```
 Don't forget to mark the script as executable: `chmod +x /etc/rc.local`
+
+The client side ssh command looks like:  
+`ssh ssh-port-forwarding@myserver.example.com -TNnqakx -o "TCPKeepAlive yes" -o "ServerAliveInterval 5" -o "ServerAliveCountMax 3" -o "ExitOnForwardFailure yes" -L [...] -R [...]`
+
+* `-T`
+* `-N`
+* `-n`
+* `-q`
+* `-a`
+* `-k`
+* `-x`
+* `-o "TCPKeepAlive yes"`
+* `-o "ServerAliveInterval 5"`
+* `-o "ServerAliveCountMax 3"`
+* `-o "ExitOnForwardFailure yes"`
+* `-4` (not shown above) is optional to foce ssh to use IPv4 only (in case of problems with IPv6)
+* `-L`  (can be repeated multiple times)
+* `-R`  (can be repeated multiple times)
+
+Please beware that the hostname part in the `-L` and `-R` options must be spelled exactly the same as in the `permitlisten` and `permitopen` variables on the server ("Localhost", "localhost" and "127.0.0.1" are treated different).