Cisco Cisco IPS 4255 Sensor

 illustrates what each part of the IPS software file represents for recovery and system image files.

 lists platform-independent Cisco IPS 6.x software release examples. Refer to the Readmes that 

accompany the software files for detailed instructions on how to install the files. 

191015

Product line/platform designator

Strong crypto designator

Package type

Installer major version

Installer minor version

Application version designator

Application version

File extension

Signature update

1

1.

Signature updates include the latest cumulative IPS signatures.

Weekly

sig

S700

IPS-sig-S700-req-E1.pkg

Signature engine update

2

2.

Signature engine updates add new engines or engine parameters that are used by new signatures in later signature updates.

As needed

engine

E1

IPS-engine-E1-req-6.1-3.pkg

Service packs

3

3.

Service packs include defect fixes.

Semi-annually 
or as needed

—

6.1(3) IPS-K9-6.1-3-E1.pkg

Minor version update

4

4.

Minor versions include new minor version features and/or minor version functionality.

Annually

—

6.1(1)

IPS-K9-6.1-1-E1.pkg

Major version update

5

5.

Major versions include new major version functionality or new architecture.

Annually

—

6.0(1)

IPS-K9-6.0-1-E1.pkg

Patch release

6

6.

Patch releases are for interim fixes.

As needed

patch

6.0(1p1)

IPS-K9-patch-6.0-1pl-E1.pkg

Recovery package

7

7.

The r 1.1 can be revised to r 1.2 if it is necessary to release a new recovery package that contains the same underlying 
application image. If there are defect fixes for the installer, for example, the underlying application version may still be 6.0(1), 
but the recovery partition image will be r 1.2.

Annually or as 
needed

r

1.1-6.0(1)

IPS-K9-r-1.1-a-6.0-1-E1.pkg