Unfortunately SATAN isn't as portable as we would like it to be, but it still will run on a fairly large number of Un*x machines. One of the main problems we had is that for it to do all of the tasks that we wanted and to actually be able to release it within any reasonable time frame, we had to both rely on many other publically available tools and forego much of our usual testing methodologies. Still under development, and most often used by us as a research and discovery tool, it will become more robust and portable as we get feedback and are able to test it on more platforms ourselves.
With approximately 1500 hosts scanned, with approximately 18000 facts in the facts file took about 14 megabytes of memory on a SPARC 4/75 running SunOS 4.1.3.
With approximately 4700 hosts scanned, with about 150000 facts, it took up almost 35 megabytes of memory on an Indigo 2.
Needless to say, swapping is very painful if you don't have enough memory.
We realize that you may not have all of the additional software required to run SATAN already on your system. If you're not on the Internet, we're sorry but we currently do not have the resources to help you get all of these programs. Perhaps at some point a tape or CD distribution could be made (probably by a 3rd party) if the demand is high enough.
Although all of it is widely and freely available on the Internet, on a wide number of sites, here are some easy places to find perl, mosaic, and netscape: