Cisco Cisco IPS 4255 Sensor
6
Release Notes for Cisco Intrusion Prevention System 7.3(5)E4
OL-32050-01
Obtaining Software
The V01 chassis has the following limitations (these limitations do not apply to the V02 chassis):
•
The sensor requires 50 seconds from the time that AC power is applied before the power state can
be updated and stored. This means that any changes to the power state within the first 50 seconds of
applying AC power will not be observed if AC power is removed within that time.
be updated and stored. This means that any changes to the power state within the first 50 seconds of
applying AC power will not be observed if AC power is removed within that time.
•
The sensor requires 10 seconds from the time it is placed into standby mode before the power state
can be updated and stored. This means any changes to the power state within the first 10 seconds of
entering standby mode (including the standby mode itself) will not be observed if AC power is
removed within that time.
can be updated and stored. This means any changes to the power state within the first 10 seconds of
entering standby mode (including the standby mode itself) will not be observed if AC power is
removed within that time.
For More Information
For information on the AC power supplies in the IPS 4300 series sensors, refer to
.
Obtaining Software
You can find major and minor updates, service packs, signature and signature engine updates, system
and recovery files, firmware upgrades, and Readmes on the Download Software site on Cisco.com.
Signature updates are posted to Cisco.com approximately every week, more often if needed. Service
packs are posted to Cisco.com in a release train format, a new release every three months. Major and
minor updates are also posted periodically. Check Cisco.com regularly for the latest IPS software.
and recovery files, firmware upgrades, and Readmes on the Download Software site on Cisco.com.
Signature updates are posted to Cisco.com approximately every week, more often if needed. Service
packs are posted to Cisco.com in a release train format, a new release every three months. Major and
minor updates are also posted periodically. Check Cisco.com regularly for the latest IPS software.
You must have an account with cryptographic access before you can download software. You set this
account up the first time you download IPS software from the Download Software site.
account up the first time you download IPS software from the Download Software site.
Note
You must be logged in to Cisco.com to download software. You must have an active IPS maintenance
contract and a Cisco.com password to download software. You must have a sensor license to apply
signature updates.
contract and a Cisco.com password to download software. You must have a sensor license to apply
signature updates.
Downloading Cisco IPS Software
To download software on Cisco.com, follow these steps:
Step 1
Log in to
.
Step 2
From the Support drop-down menu, choose Download Software.
Step 3
Under Select a Software Product Category, choose Security Software.
Step 4
Choose Intrusion Prevention System (IPS).
Step 5
Enter your username and password.
Step 6
In the Download Software window, choose IPS Appliances > Cisco Intrusion Prevention System and
then click the version you want to download.
then click the version you want to download.
Note
You must have an IPS subscription service license to download software.
Step 7
Click the type of software file you need. The available files appear in a list in the right side of the
window. You can sort by file name, file size, memory, and release date. And you can access the Release
Notes and other product documentation.
window. You can sort by file name, file size, memory, and release date. And you can access the Release
Notes and other product documentation.
Step 8
Click the file you want to download. The file details appear.