By default the Fileshare Server uses CCITCP to communicate with Fileshare Clients using the TCP/IP protocol. You need to specify any other protocol you want Fileshare to use by specifying the /cm option, for example:
Windows:
/cm ccism
This entry in the Fileshare Server configuration file enables the Fileshare Server to communicate with Fileshare Clients using the Named Shared Memory (CCISMEM) protocol.
UNIX:
-cm ccitcp -cm ccinampu
These entries in the Fileshare Server configuration file enable the Fileshare Server to communicate with Fileshare Clients using TCP/IP (CCITCP) and the Named Pipes for UNIX (CCINAMPU) protocol.