1) run configure script

# ./configure

2) build & install binary and sample configuration files

# make
# make install
# make install-doc

3) create your configuration files and edit it
for more detail, see /usr/local/share/doc/istgt/QUICKSTART

# cd /usr/local/etc/istgt
# cp auth.conf.sample auth.conf
# cp istgt.conf.sample istgt.conf
# cp istgtcontrol.conf.sample istgtcontrol.conf
# EDIT files

4) start daemon

# /usr/local/etc/rc.d/istgt forcestart

5) edit /etc/rc.conf to run it at startup

istgt_enable="YES"