LIST OF FIGURES
Figure page

2 .1 A A F ID A rchitectu re.......................................................................................... 9

2.2 EM ER A L D A rchitecture............................................................ ......................... 10

2 .3 A rch itectu re of th e ID S ................................................................................................... 14

3.1 A architecture of a single host ID S ...................... ........ ....................... .............. 20

3.2 E extended A rchitecture................................................................ ............ ........... 25

3.3 Inter-H ost C om m unication .......................................................... .................. ...... 27

3.4 Cellular Architecture ................................................ ........... .......... .. 29

3.5 Isolated Cells .......................................... 30

4.1 Information Flow in the Knowledge Store Architecture................................................ 36