In the fast-moving world of computers, things are always changing. Since the first edition of this strong-selling book appeared two years ago, network security
techniques and tools have evolved rapidly to meet new and more sophisticated threats that pop up with alarming regularity. The 2nd edition offers both new and thoroughly updated hacks for Linux, Windows, OpenBSD, and Mac
OS X servers that not only enable readers to secure TCP/IP-based services, but helps them implement a good deal of clever host-based security
techniques as well.