UDP bombs, floods, snork attacks, 48, 888, 1035, 1052
unattended installation, ISA firewall, 468-470
unihomed ISA firewall, 490-491, 539
upgrade, performing ISA firewall installation, 489, 538
upgrade costs, 149-150
upgrading ISA Server 2000 to ISA Server 2004, 12-13
URL Set, creating, 576-578
URL Set Network Object, 305-307
URLs, rewriting using ISA firewall link translator, 636
user accounts
changing dial-in permissions, VPN users, 782
creating for remote VPN router, 813-814
user certificates, configuring ISA firewall for client certificates, 676-678
User Datagram Protocol (UDP), 1031
user/group-based access control, Web Proxy clients, 405-409
user groups
creating on ISA firewall, 734
firewall, 60
user mapping feature, 716, 727, 793
user names and SecureNAT clients, 368
user sets, Access Rules, 548
User Sets page, Access Rules, 559-560
User Sets page, Web Publishing Rules, 654
users
educating about security issues, 1051
security, and principle of least privilege, 1021