Securing remote access to ICX7450 running 9.0.10c

[frnkblk]

I'd like to better secure remote access to the ICX7450.  There doesn't seem to be away to apply an ACL to the SSH configuration, so I tried both the "all-client" and "ip ssh client" commands, but they don't seem to work in 9.0?  Yet they are in the online manual?

SSH@router(config)#ip ssh client <redacted IP>
Invalid input ->client <redacted IP>
Type ? for a list
Node doesn't exist
SSH@router(config)#all-client <redacted IP>
Invalid input ->199.120.69.4
Type ? for a list
Node doesn't exist
SSH@router(config)#

Frank