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Contents vii
G
Status lights ...................................................... 11-3
Statistics & Logs ......................................................... 11-4
General Statistics .............................................. 11-4
Event histories ............................................................ 11-5
Routing tables ............................................................. 11-7
Served IP Addresses.................................................... 11-8
System Information.................................................... 11-10
SNMP ....................................................................... 11-10
The SNMP Setup screen................................... 11-11
SNMP traps ..................................................... 11-12
Chapter 12 — Security ...........................................................12-1
Suggested security measures....................................... 12-1
User accounts ............................................................. 12-1
Dial-in Console Access................................................. 12-4
Enable SmartStart/SmartView/Web Server................... 12-4
Telnet access .............................................................. 12-5
About filters and filter sets ........................................... 12-5
What’s a filter and what’s a filter set?.................. 12-5
How filter sets work............................................ 12-5
How individual filters work................................... 12-7
Design guidelines............................................. 12-11
Working with IP filters and filter sets............................ 12-12
Adding a filter set............................................. 12-13
Viewing filter sets............................................. 12-18
Modifying filter sets.......................................... 12-18
Deleting a filter set........................................... 12-19
A sample IP filter set ........................................ 12-19
Firewall tutorial.......................................................... 12-22
General Firewall Terms ......................................12-22
Basic IP Packet Components............................. 12-22
Basic Protocol Types ........................................ 12-23
Firewall design rules......................................... 12-23