Greetings! I am adding a new responsibility to my rapidly-lengthening list, and would like some advice. My new project involved about 12-14 SGI workstations on an open network which are going to be used by our Comp. Sci. Dept. The idea is to setup one machine as a server, or master, and then control the rest from that machine. We also need to accommodate some file sharing. All in all, this will entail running both NFS and NIS. What I am wondering is if anybody knows of good books and/or resources to learn about NFS and NIS and securing both systems. Also, what are some good IDS that are inexpensive (perhaps can find get on net) and worth using that will help secure these machines. I forsee many security holes running both NIS and NFS, but there does not seem to be an alternative. I appreciate any advice/input anybody can give me, as this is unchartered territory for me. TIA! -ben