I am using s/w ver 7.0(4).
The config for ssh is:
crypto key generate rsa modulus 1024
ssh a.b.c.d 255.255.255.255 outside
but it's not working.
Yes, if your outside interface is mapped to y.y.y.y then you will not be able to ssh to x.x.x.x as it will be forwarding this to y.y.y.y.
You could change from a 1 to 1 static to port address translation for each particular port you need forwarded to y.y.y.y.
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