ssh tunnel on SUN Solaris?

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System: SUN Solaris X86 with ADSL provider router box.
Sun system engineers can make a shared shell to their customers.
Also with my SUN. But it is a SUN service only.
I would like to have this possibility for sharing a shell with just
another Solaris X86.
Anyone who could help me to make a secure shell with another user?

How to do it with SUN Solaris? Anyone out there?
with friendly greetings,

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