Issue of NAT for ASA running 8.4 (5)

We have a client who is about to hang an ASA off the coast of the demilitarized zone of our firewall that is running 8.4 (5). This firewall is currently on another part of our network, and NAT will be considerably changed. Now, everything on the client firewall must be coordinated outside for the same thing as the IP model internal, for example like the old "static (inside, outside) 172.16.16.0 172.16.16.0 netm 255.255.255.0" command.

When I look at the document from Cisco for (conversion) NAT

( http://www.cisco.com/en/US/docs/security/asa/asa83/upgrading/migrating.html#wp96828), I see not all conversions between the two. This is not a "nat 0" because users need access to certain hosts inside the firewall of our customers.

Can someone tell me please in the right direction? Thank you

Hello

Lets assume that the following is true

  • The new ASA has 'inside' and 'outside' network/interface only
  • The ASA News should do EVERYTHING NAT 'inside' to 'outside' to any kind of situation traffic (your firewall handles this?)

Then you can simply have the ASA with absolutely no. NAT configurations. The ASA with new software releases 8.3 and above all automatically passes all traffic through the ASA UNNATED. We use it on a single client and it works very well.

Please let me know if the above is the case, or can't think of anything else

-Jouni

Tags: Cisco Security

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