06-20-2017 05:13 AM
Hello Everyone,
I am new to the world of Cisco, so can someone help me out to find the difference between packet process prior 8.2 & afterward 8.2.
Prior and till 8.2: ACL is hit first then NAT is applied because NAT is software based and its quite slow. So to improve efficiency traffic is first filtered out by ACL.
Afterward 8.2: NAT is applied first and then ACL is hit because NAT is hardware based and its fast as compared to software-based NAT.
Are these are the only difference between them?
Please correct me if i am wrong.
06-23-2017 09:22 AM
There's a good diagram in this thread on the learning network:
ASA order of operations (pre-8.3 and post 8.3) - 46543 - The Cisco Learning Network
07-20-2017 08:47 AM
Hi Jason,
Thanks for the reply.
Actually, i am curious about the Hardware/Software part about the NAT.
So is it true or just a rumor that:
Prior and till 8.2: ACL is hit first then NAT is applied because NAT is software based and its quite slow. So to improve efficiency, traffic is first filtered out by ACL.
Afterward 8.2: NAT is applied first and then ACL is hit because NAT is hardware based and its fast as compared to software-based NAT
?
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