Appendix E Troubleshooting

Troubleshooting the Appliance

For More Information

For the procedure for properly installing the sensing interface on your sensor, refer to the chapter on your appliance in this document.

For the procedures for configuring interfaces on your sensor, refer to Configuring Interfaces.

Unable to See Alerts

If you are not seeing alerts, try the following:

Make sure the signature is enabled

Make sure the signature is not retired

Make sure that you have Produce Alert configured as an action

Note If you choose Produce Alert, but come back later and add another event action and do not add Produce Alert to the new configuration, alerts are not sent to the Event Store. Every time you configure a signature, the new configuration overwrites the old one, so make sure you have configured all the event actions you want for each signature.

Make sure the sensor is seeing packets

Make sure that alerts are being generated

Make sure the sensing interface is in a virtual sensor

To make sure you can see alerts, follow these steps:

Step 1 Log in to the CLI.

Step 2 Make sure the signature is enabled.

sensor# configure terminal

sensor(config)# service signature-definition sig0 sensor(config-sig)#signatures 1300 0 sensor(config-sig-sig)#status sensor(config-sig-sig-sta)#show settings

status

-----------------------------------------------

enabled: true <defaulted>

retired: false <defaulted>

-----------------------------------------------

sensor(config-sig-sig-sta)#

Step 3 Make sure you have Produce Alert configured.

sensor# configure terminal

sensor(config)# service signature-definition sig0 sensor(config-sig)#signatures 1300 0 sensor(config-sig-sig)#engine ?

normalizer

Signature engine

sensor(config-sig-sig)# engine normalizer

sensor(config-sig-sig-nor)# event-actionproduce-alert

sensor(config-sig-sig-nor)# show settings normalizer

-----------------------------------------------

 

 

event-action: produce-alert default: produce-alertdeny-connection-inline

 

 

edit-default-sigs-only

 

 

-----------------------------------------------

 

 

 

 

 

sensor#

 

 

Cisco Intrusion Prevention System Appliance and Module Installation Guide for IPS 7.1

 

 

 

 

 

 

 

OL-24002-01

 

 

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Cisco Systems IPS4520K9 manual Unable to See Alerts, Make sure you have Produce Alert configured

IPS4520K9 specifications

Cisco Systems has long been a leading player in network security, and its IPS (Intrusion Prevention System) series is a testament to its commitment to safeguarding digital environments. Among its notable offerings are the IPS4510K9 and IPS4520K9 models, both designed to provide advanced threat protection for mid-sized to large enterprise networks.

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