Order Of Operation While Configuring CBAC & NAT Togather

While configuring CBAC and NAT on a router, the NAT order of operation plays an important role.

For inside-to-outside traffic, perform these steps:

1. Check input ACL.
2. Perform NAT inside to outside.
3. Check output ACL.

For outside-to-inside traffic, perform these steps:

1. Check input ACL.
2. Perform NAT outside to inside.
3. Check output ACL.

For filtering inside-to-outside traffic on the inside interface, the inside hosts should be specified by their actual IP addresses.

Similarly, for filtering outside-to-inside traffic on the outside interface, the inside hosts should be specified by their translated addresses (inside global).