GNS3/Pemu- How to use an Unrestricted Pix License
Posted by Josh on Fri 20 Feb 2009Categories: ASA / Pix , CCIE , Cisco , GNS3 , PEMU - [14] Comments
Testing Pix related labs can be difficult without the necessary features. In this tutorial, you will learn how to find and use an unrestricted license on your virtual pix firewall. This will not work on an actual Pix firewall. Only GNS3 and only for testing.
How to obtain an unrestricted license on your own
- Open google.com
- Enter “This Platform has an unrestricted (UR) license” (with quotes)
- Search the results until you find a valid ‘show version’ with a serial number and activation key
- Copy the serial number
- Open a new tab and go to google.com again
- Paste the serial number followed by “in hex”
ex: [405400750 in hex ] - The resulting hex number will be used as the serial number in GNS3
Configure PEMU to use the unrestricted Pix license
- Open Gns3
- Create a new project file
- check save NVRAMS and other disk files
- click ‘Ok’
- Configure Pemu Preferences
- Go to the ‘Edit > Preferences’ menu
- Make sure the pemuwrapper path is correct
- Locate a Pix image on your hard drive
- Enter the hex version of the serial number found with google’s help
- Click ‘Ok’
- Drag a Pix Icon onto the lab
- Start the firewall
- Console into the firewall
- Type ‘enable’ to enter enable mode
- Press enter when prompted for a password
- Type ‘config t’ to enter config mode
- Type ‘activation-key’ followed by the activation key found with google’s help
- Press ‘Enter’ to proceed with flash update of activation key
- Type ‘write mem’ to save the config
- Stop and Start the Firewall
- Console into the firewall again
- Type ‘show version’ to verify the activation key worked. You should see various features enabled now.

February 20th, 2009 at 7:31 am
Gud stuff. I tried this with my pix8.x image and all the features are good to go.
Use the following syntax to download pix and asdm images:
“intitle:index.of asdm pix” remove the quotes
February 21st, 2009 at 1:12 pm
Nice “little dirty trick” for getting the serial number through google.com
Good presentation…like always!
Cheers!
February 24th, 2009 at 9:36 pm
Eliufoo,
Thanks for the feedback!
Josh
March 7th, 2009 at 1:26 am
Hey,
In order my Cloud and Switch to work in GNS3, anybody can share here how do I make it to work? or at least I need a link to download any files needed to make it work. Thank you in deep 4 the feedback
Arif
March 12th, 2009 at 5:11 am
Arif,
Here is a tutorial that should help.
http://www.blindhog.net/gns3-use-pemu-as-your-personal-firewall/
If you are using linux, this one might help too.
http://www.blindhog.net/linux-bridging-for-gns3-lan-communications/
Josh
April 2nd, 2009 at 1:49 am
Hi Josh,
The video is great. Can you create another tutorial for about the icmp ping from the inside host to the outside host through the pix ??? So as I can learn the basic setting of pix.
Thanks !!!!
April 2nd, 2009 at 7:22 am
PIX/ASA 7.X Issue: MSS Exceeded – HTTP Clients Cannot Browse to Some Web Sites
http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_tech_note09186a00804c8b9f.shtml
April 2nd, 2009 at 5:34 pm
Hi,
Nice trick & really helpful, thanks
Thiru
April 19th, 2009 at 8:17 am
Vanbrugh,
Look here.
http://www.blindhog.net/cisco-pix-7x-basic-configuration/
Josh
June 19th, 2009 at 10:13 pm
I was wondering about something.
This video that you have made about changeing the serial etc. Will it be permently on a FO licsens cisco 515. Or is this just a test system..?
If not, do i just buy the licsens from cisco or?
Thx
Eis
August 20th, 2009 at 5:19 pm
First of all, big thanks to blindhog!
Been a few months trying helplessly setup pemu to no avail.
Only (big) caveat I had:
Once I followed to the letter blindhog’s instructions, I was stuck starting up the fw0 without a console. When I tried to telnet localhost 4000 it simply rejected my telnet conection.
Now, the catch was to create a blank flash file. Instructions were in the readme, but here follows a very quick dd commandline:
dd if=/dev/zero of=FLASH bs=1k count=16k
After creating your flash FLASH file, simply use that in the base flash field on the PEMU preferences Default PIX settings, if you cannot select the file in the select file buttom, simply enter the full path in the text field.
If you got the same problem as me, do as I did and you will now have a working pemu config.
Good luck to you and big thumbs up to blindhog!
August 7th, 2010 at 1:21 am
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August 12th, 2010 at 7:14 pm
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August 23rd, 2010 at 4:08 pm
Thank you very much for this. You solved a weeks worth of frustration. Wish I would have found this site first! Worked like a charm!!!!