My SysAdmin friends and I have gotten along quite well with a book "RedHat Linux 6 in Small Business" for quite a while. It has some excellent sections on Firewall, Masquerading, Apache, Dial on Demand, etc. Unfortunately, it's gone out of print and of course is somewhat dated. I would love to see a second edition for 7.x... Any of you folks have a recommendation on a replacement? Thanks.