Reference Guide

x User’s Reference Guide
Firewall design rules......................................... 16-36
Filter basics..................................................... 16-39
Example filters................................................. 16-40
Filtering on the LAN Interface...................................... 16-43
Chapter 17 — Utilities and Diagnostics...................................17-1
Ping............................................................................ 17-2
Trace Route................................................................. 17-4
Telnet client................................................................. 17-5
Disconnect Telnet console session ............................... 17-7
Factory defaults........................................................... 17-7
Transferring configuration and firmware files with TFTP.... 17-8
Updating firmware.............................................. 17-8
Downloading configuration files ........................... 17-9
Uploading configuration files ............................. 17-10
Transferring configuration and firmware files with
XMODEM................................................................... 17-10
Updating firmware............................................ 17-11
Downloading configuration files ......................... 17-12
Uploading configuration files ............................. 17-12
Restarting the system................................................ 17-13
Part III: Appendixes
Appendix A — Troubleshooting..................................................A-1
Configuration problems .................................................. A-1
Console connection problems ............................... A-2
Network problems................................................ A-2
How to Telnet or Console to your Router from a
Windows 9X Workstation................................................ A-3
How to reset the router to factory defaults .................... A-11
Power outages............................................................. A-11
Technical support ........................................................ A-12
How to reach us................................................. A-12