ssh is on port 22 not 222
you have change your firewall's setting so that is leaves port 22 alone
then you have to tell linux tu run the ssh daemon (ssh server) so that you can connect to it (in redhat I've change that in the kickstart configuration, I just checked the SSHD box)
If you do that, it should be ok unless your linux computer is not directly connected to internet dans uses a connection sharing like me ; if you have that you have a few other thing to set, but I can't help you I still have a few problems with that ; I don't know why but sometimes it works and sometimes not
well good luck
ssh rules with all the text-based softwares