Upgrading the Sensor
Cisco Systems periodically releases updates of sensor
software and signature versions. It is highly recommended that you regularly
install the updates of signature versions as well as sensor software in order to
ensure the value of the IDS sensor in the overall security architecture. Without
regular updates, the IDS sensor will become no more than a pretty decoration in
the rack since it will not be able to sense current threats to your network.
Updating Sensor Software (IDS 3.1)Upgrading the IDS sensor
software version 3.0 or 3.1 can be done by downloading the service pack from the
Cisco Web site and applying it to the IDS sensor. The following procedure can be
used to update IDS sensor software versions 3.0 or 3.1.
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From the Cisco.com Web site (www.Cisco.com/cgi-bin/tablebuild.pl/ids3-app) download the
self-extracting binary file.
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On the target sensor, copy the binary file to the /tmp directory.
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Log into the sensor as root.
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Change the directory to the /tmp
directory.
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Change the binary file's attributes so it is an
executable:
sensor# chmod +x IDSk9-sp-3.1-4-S50.bin
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Type the following to execute the binary file with the –I
option.
sensor# ./IDSk9-sp-3.0-1-S4.bin –I
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Then the installation is complete, review the file /usr/nr/sp-update/output.log for the status of this service
pack.
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