My company is the obvious leader when it comes to fully integrating your UNIX and Microsoft security, architecture. We fully integrate user authentication, filers, file permissions, backups, remote access and even your human resources. www.wisenets.com
If you operate as an independant you are required to carry liability and Errors and Ommissions Insurance. While I didn't find their service top notch, I have $1 million dollars of each for about $1200 a year.
