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Cisco ISA500 Series Integrated Security Appliance Administrator Guide
333
Troubleshooting
This chapter describes how to fix some common issues when you are using the
security appliance. It includes the following sections:
•
•
•
Pinging to Test LAN Connectivity, page 337
•
Restoring Factory Default Settings, page 339
Internet Connection
Symptom:
You cannot access the Configuration Utility from a PC on your LAN.
Recommended Actions:
STEP 1
Check the Ethernet connection between the PC and the security appliance.
STEP 2
Ensure that the IP address of your PC is on the same subnet as the security
appliance. If you are using the recommended addressing scheme, your PC’s
address should be in the range 192.168.1.100 to 192.168.1.200.
STEP 3
Check the IP address of your PC. If the PC cannot reach a DHCP server, some
versions of Windows and MacOS generate and assign an IP address. These auto-
generated addresses are in the range of 169.254.x.x. If your IP address is in this
range, check the connection from the PC to the security appliance and reboot your
PC.
STEP 4
If your IP address has changed and you don’t know what it is, reset the security
appliance to the factory default settings.