... 290auditors, 263 available systems, 263 – 267 Demarc PureSecure, 266 NFR Network Intrusion Detector, 267 Snort, 265 – 266 Tripwire, 265 Windows file system and security auditing, 264 decoys, 261 – 263 inspectors, ... logon, 154 network security, 159–170Active Directory, 159– 160 Group policy, 163 – 165 IPSec, 169 –170Kerberos authentication, 160 – 163 share security, 166 – 169 port blocking for server, 58 security ... 159–170Active Directory, 159– 160 Group policy, 163 – 165 IPSec, 169 –170Kerberos authentication, 160 – 163 share security, 166 – 169 Network Time Protocol, for Kerberos, 199 network- based authentication...