H 
     hash-keyed message authentication code (HMAC), 143 
      helpdesk ticket tracking, 529 
     HIDS/HIPS (host-based IDS/IPS), 75 “76, 378 
      HMAC (hash-keyed message authentication code), 143 
     host-based IDS/IPS (HIDS/HIPS), 75 “76, 378 
      hostile work environments, 211 “212 
     hosts , trust models, 374 “375 
     Hot Standby Router Protocol (HSRP), 354, 363 
     hotfixes.  See also  patches/updates 
  staying informed about, 448 “449 
  when to use, 448 
     HSRP (Hot Standby Router Protocol), 354, 363 
     HTTP/HTTPS 
  configuring HTTPS for Nortel Contivity, 111 “121 
  HTTP as insecure protocol, 110 
  implementing on Microsoft IIS, 78 “79 
  preventing remote administration, 42 “44 
  securing remote administration, 44 “48 
  using HTTPS with VPNs, 110 “112 
     human resources personnel, 521, 524