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E-56
Cisco Intrusion Prevention System Appliance and Module Installation Guide for IPS 7.1
OL-24002-01
Appendix E Troubleshooting
Troubleshooting the IME
telnet-option enabled
access-list 0.0.0.0/0
ftp-timeout 300
no login-banner-text
exit
time-zone-settings
offset 0
standard-time-zone-name UTC
exit
summertime-option disabled
ntp-option disabled
exit
service web-server
port 443
exit
Step 2
If network devices, such as routers, switches, or firewalls, are between the sensor and the workstation,
make sure these devices are configured to allow the workstation to access the sensor web server port. All
remote management communication is performed by the sensor web server.
For More Information
For the procedure for enabling and disabling Telnet on the sensor, and configuring the web server, refer
to Changing Network Settings.
Signatures Not Producing Alerts
Caution
You cannot add other actions each time you configure the event actions. You are actually replacing the
list of event actions every time you configure it, so make sure you choose Produce Alert every time you
configure event actions.
If you are not seeing any alerts when signatures are firing, make sure that you have configured Produce
Alert as an event action. For example, if you choose Produce Alert, but later add another event action
and do not add Produce Alert to the new configuration, alerts are not sent to the Event Store. To make
sure you are getting alerts, check the statistics for the virtual sensor and the Event Store.
For More Information
•
For more information about event actions, refer to Event Actions.
•
For the procedure for configuring event actions, refer to Assigning Actions to Signatures.
•
For the procedure for obtaining statistics about virtual sensor and Event Store, refer to Displaying
Statistics.
Troubleshooting the IME
This section describes troubleshooting tools for the IME, and contains the following sections:
•
Time Synchronization on the IME and the Sensor, page E-57
•
Not Supported Error Message, page E-57