I have been using a Solaris build 61 image with Crossbow for over a year to create ipfilter firewalls in zones. This is used in a classroom environment (not commercial, so traffic volumes are negligible). 100+ students have used it so far, about 30 students/ class; 2 classes/ year. Crossbow has worked without any problems. It has been very, very useful for me. I could not be getting students to configure ipfilter firewalls without the capability to create firewalls in zones because I don''t have the hardware to assign one PC/ server/ student. Solaris has not crashed in a year. Hardware: Dell Optiplex, 512MB RAM, running 15 - 16 zones with ip-type=exclusive Manish -- This message posted from opensolaris.org