
U.S.
Patent
Mar.
23,
2004
Sheet
2
of4
US
6,711,138
B1
KR
RTOS
226
,_
200
f-
202
f
204
f-
206
Plug-ins
User
Interface
Host
Communications
Slatisticsék
Logging
2
4
208
J
I
&
(210) (2]2)
216
Caching
Algorithms
Web
Server
Management
Agent
Security
218k
OSI
Layer
5
11
6
Components
(FTP,
Tehet,
SMTP,TFI'P,BOOTP,
PINCLDHCP,
NAT/Proxy]
TCPU'DPICMP
220k
\
lP/ARP
222
J
224
SAR,AAL,DSL
Control 802.]
MAC
Driver
228
\
DSL
Hardware
Driver
LAN
Hardware
Driver
USB
Controller
Driver
Figure
2
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