SSh dlink forwarding

[Franck Y]

Hello fellows,
Ok here is my problem !
I don't have a static Ip so i bought a domain for tzo.

I use ssh to access to my computer so i use putty and i set the router
to forward the public port 22 forward to private port 22.
Like this everything is correct.
But for security reason i change the public port 52552 to  forward to
private port 22.
And know i have a connection refused.
Can you tell me where i have to modify something

Thank you
Franck