[CentOS-virt] ssh access to vmware vm from outside

Hi,

I have a centos 7 host server, which hosts vmware vms with various Os. I want to reach a ubuntu 14.04 vm through ssh and x2go (ssh as well).

What I did. 1/ open a 2296 port in firewalld. 2/ add 2296=internalvmip:22 in tcp section of /etc/vmware/vmnet8/nat/nat.conf (vmnet8 being the vms network)

From the host server I can ssh the vm, but from outside, a ssh -p 2296

user@hostserverip gives me a connection refused.

I tried a firewall-cmd --zone=external --add-forward-port=port=2296:proto=tcp:toport=22:toaddr=internalvmip

but it does not change anything.

What am I missing ?