A-44
Cisco Intrusion Prevention System Appliance and Module Installation Guide for IPS 7.0
OL-18504-01
Chapter A Troubleshooting
Troubleshooting the Appliance
Step 3
Enable SSH:
sensor(config)#
ssh host
blocking_device_ip_address
Step 4
Type
yes
when prompted to accept the device.
Blocking Not Occurring for a Signature
If blocking is not occurring for a specific signature, check that the event action is set to block the host.
To make sure blocking is occurring for a specific signature, follow these steps:
Step 1
Log in to the CLI.
Step 2
Enter signature definition submode.
sensor#
configure terminal
sensor(config)#
service signature-definition sig0
sensor(config-sig)#
Step 3
Make sure the event action is set to block the host.
Note
If you want to receive alerts, you must always add
produce-alert
any time you configure the
event actions.
sensor(config-sig)#
signatures 1300 0
sensor(config-sig-sig)#
engine normalizer
sensor(config-sig-sig-nor)#
event-action produce-alert|request-block-host
sensor(config-sig-sig-nor)#
show settings
normalizer
-----------------------------------------------
event-action: produce-alert|request-block-host default: produce-alert|deny
-connection-inline
edit-default-sigs-only
-----------------------------------------------
default-signatures-only
-----------------------------------------------
specify-service-ports
-----------------------------------------------
no
-----------------------------------------------
-----------------------------------------------
-----------------------------------------------
specify-tcp-max-mss
-----------------------------------------------
no
-----------------------------------------------
-----------------------------------------------
-----------------------------------------------
specify-tcp-min-mss
-----------------------------------------------
no
-----------------------------------------------
-----------------------------------------------
--MORE--
Step 4
Exit signature definition submode.
sensor(config-sig-sig-nor)#
exit