Very basic configuration:
# set system root-authen plain-text #( then enter password ) + commit :already done
set system host-name vsrxipsec
set system name-server 8.8.8.8
set interface ge-0/0/0.0 family inet dhcp # using VMware the first interface is using NAT ( same as VMnet8 )
set security zone security-zone trust trust interfaces ge-0/0/0 host-inbound-traffic system-services all