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ASA - Many to Many NAT

Mokhalil82
Level 4
Level 4

Hi

Security is not my best topic so I have a slight Natting dilemma.

We are allowing 2 supplier external IPs (group External_Suppliers) access to our internal domain controller (10.10.10.1) on port 636 (ldaps). 10.10.10.1 is natting to 27.2.2.25. So we have a nat for this as below

nat (inside,outside) source static 10.10.10.1 27.2.2.25 destination static External_Suppliers External_Suppliers

Now we have another domain controller (10.10.10.2) that we want the supplier to have access to on the same port (636 ldaps). Can I just create an object (Domain_Controllers) to group the domain controller IPs and add them to the NAT like this:

nat (inside,outside) source static Domain_Controllers 27.2.2.25 destination static External_Suppliers External_Suppliers

Consider the necessary access rules are already in place. Will the above work as the destination port for both is ldaps, or will I need to NAT to another external IP from my available ranges.

Thanks

1 Reply 1

Reza Sharifi
Hall of Fame
Hall of Fame

Hi,

That should work. There is an example in this doc using the range of IPs.

http://www.cisco.com/c/en/us/td/docs/security/asa/asa83/configuration/guide/config/nat_objects.html

HTH

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