My router supports CBAC?

It seems that some router IOS versions 12.2 or better to support CBAC and others do not. Is there something that I can look in the NVA SH or SH RUN where I can tell if the operating system supports the IOS Firewall Feature Set?

OK, let's try again. I know it can be confusing. In 12.1 images and earlier versions (I think), you can identify an IOS image that has the CBAC (or IOS Firewall because it sometimes referred to as) features enabled by finding an 'o' in the name of the image file. Beginning in paragraph 12.2 and later versions, you can identify it with a 'o3' in the name of the image file. They both mean the same thing. The image I posted wasn't c1600-osy56i-l. 121 - 11.bin. Note the "o" in the name of the image after the flag of the platform.

Now, to the FW part. In the center of software for different IOS images, you will see various lengthy game descriptions. The active CBAC feature sets will have FW in the description. For example, http://www.cisco.com/cgi-bin/Software/Iosplanner/Planner-tool/iosplanner.cgi?get_crypto=&data_from=&hardware_name=1601-1604&software_name=&release_name=12.2.19a&majorRel=12.2&state=:HW:RL & type = limited % 20Deployment you can see the following: IP/FW MORE IPSEC 56

Note the above FW. This indicates that this link will take you to an image which has features of firewall enabled and has also a 'o' or 'o3' in the name of the image file.

Do not confuse the version "bootstrap" in the code with the version of the code that is running on the router. You can go back and review the output. This should be the code of 12.1 (11) for a 1600.

CBAC has been added to IOS in 12.0 (5) T and later in 12.1 mainline as well. All versions should subsequently have active CBAC IF a 'o' or 'o3' exists in the name of the image file.

I really hope this helps.

Scott

Tags: Cisco Security

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