Users can connect to SAP B1 using one host

Dear Experts/Gurus,

I have a problem relate to installation of SBO 2005A Sp 01. We use 1 server to install SBO (Application+Database). The users connect to the server computer / host (CPU) using switch / router. There are 30 users, so it means there are no CPU used by all users. They directly connect to a host using the router. Could the users open the SBO GUI using that setting ? I appreciate your answers. TIA.

Rgds,