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vi User’s Reference Guide
Firewall tutorial.......................................................... 13-29
General firewall terms ...................................... 13-29
Basic IP packet components ............................. 13-29
Basic protocol types......................................... 13-29
Firewall design rules......................................... 13-30
Filter basics..................................................... 13-32
Example filters ................................................. 13-33
Chapter 14 — Utilities and Diagnostics ...................................14-1
Ping............................................................................ 14-2
Trace Route................................................................. 14-4
Telnet client................................................................. 14-5
Disconnect Telnet console session ............................... 14-6
Factory defaults........................................................... 14-6
Transferring configuration and firmware files with TFTP.... 14-6
Updating firmware .............................................. 14-7
Downloading configuration files ........................... 14-8
Uploading configuration files ............................... 14-9
Transferring configuration and firmware files with
XMODEM..................................................................... 14-9
Updating firmware ............................................ 14-10
Downloading configuration files ......................... 14-11
Uploading configuration files ............................. 14-11
Restarting the system................................................ 14-12
Part III: Appendixes
Appendix A — Troubleshooting..................................................A-1
Configuration problems .................................................. A-1
Console connection problems ............................... A-2
Network problems ................................................ A-2
How to reset the router to factory defaults ...................... A-3
Power outages............................................................... A-3
Technical support .......................................................... A-4