x
11.7.1
Main Mode Remote Access
....................................................................
118
11.7.2
Aggressive Mode Remote Access
.........................................................
120
12
System Management
...........................
123
12.1
Configure System Services
...............................................................................
123
12.2
Change the Login Password
.............................................................................
124
12.3
Modify System Information
................................................................................
124
12.4
Setup Date and Time
.........................................................................................
125
12.4.1
View the System Date and Time
............................................................
126
12.5
System Configuration Management
.................................................................
126
12.5.1
Reset System Configuration
...................................................................
126
12.5.2
Backup System Configuration
................................................................
127
12.5.3
Restore System Configuration
................................................................
127
12.6
Upgrade Firmware
..............................................................................................
128
12.7
Reset the Internet Security Router
....................................................................
129
12.8
Logout Configuration Manager
..........................................................................
130
13
ALG Configuration
................................
131
14
IP Addresses, Network Masks, and
Subnets
................................................
135
14.1
IP Addresses
......................................................................................................
135
14.1.1
Structure of an IP address
.......................................................................
135
14.2
Network classes
.................................................................................................
135
14.3
Subnet masks
.....................................................................................................
136
15
Troubleshooting
....................................
139
15.1
Diagnosing Problem using IP Utilities
...............................................................
140
15.1.1
ping
...........................................................................................................
140
15.1.2
nslookup
...................................................................................................
141
16
Glossary
...............................................
143