welcome non-njit user
this paragraph is in the non-njit.inc file.
<!--#if expr="$REMOTE_ADDR = /^128.235./" -->
welcome njit user
<!--#include file="njit.inc" -->
<!--#else -->
welcome non-njit user
<!--#include file="non-njit.inc" -->
<!--#endif -->
the command to make the file executable and enable server side include is:
chmod a+x ssi.html