Cisco ASA Config Migration


i'm migrating my customer existing Cisco ASA5510 (Ver.8) to newer model ASA5516 (ver. 941).
I understand that the new firmware has change the CLI NAT code. I found there is a link from internet that helping to convert the existing code to new version of code.

the site is below are the code that I tried to convert and failed

global (outside) 10 interface
global (VPN_Lease_Line) 20 interface
nat (inside) 10

nat (inside) 20 access-list policynat_ebs
access-list policynat_ebs extended permit tcp host host eq https
access-list policynat_ebs extended permit tcp host eq https
access-list policynat_ebs extended permit tcp host eq https

nat (dmz) 10 access-list dmz_nat_outbound
access-list dmz_nat_outbound extended permit ip any

other rules seem no issue.

much appreciate if any expert may share their experience...

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Ken BooneNetwork ConsultantCommented:
So what I would do, is save everything on the 5510, then if you have enough memory upgrade to 8.3 on the 5510.  This upgrade converts the code for you.  Once that is done, the 8.3 version of the config  should be 98% good on 9.4.1 with the exception of the interface names.  Then you can compare what is in the 8.3 to what the conversion looks like in your tool.
hell_angelEngineerAuthor Commented:
we... I have thought that as well.. but customer can't afford to have downtime to do the firmware upgrade on the 5510.

so my next steps is to downgrade 5516 to lower version which I can restore the config from 5510.
Ken BooneNetwork ConsultantCommented:
I don't think you will be able to downgrade the 5516 to that level.

Read through this to help you out.
hell_angelEngineerAuthor Commented:
Yeah.. the Cisco folk gave a wrong info. so we will re-create the NAT rule manually.
you will need to completely rewrite NAT statements as the syntax has changed since 8.3.

I wrote an article that you may want to read on this matter:

hope this helps

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