Mac as front end to Sun?

[TNG TH]

Hi. I need help in using the Mac as front end to the SUN. I apologize
if this topic has been dealt with before. But please help me.

Basically, I need to connect many Mac IIxs thru ethernet to SUN servers.
The Mac retains its look-and-feel, and all computational intensive stuff
are routed to the SUN - database server, image processing server, etc.

If there is an implementation of TCP/IP on the Mac OS will it help? If so,
where can I find such a implementation?

Thanks.