I hve a cisco asa running 8.3(1) version.
I have a succesffull L2L tunnel between two sites. but, im confused about the nat exemption used here. An acl is defined stating the interesting traffic of two sites using the tunnel should be nat exempted and is configured as below in rectangular boxes.
The ACL created doesnt have a statement to be nat exempted nor it is applied to any interface.
nat (inside) 0 access-list inside_nat0_outbound
## Configure NAT Exempt ACL
access-list inside_nat0_outbound extended permit ip object-group ET_LOCAL object-group ET_REMOTE
object-group network ET_LOCAL
network-object host 10.x.x.x
object-group network ETS_REMOTE
network-object host 64.x.x.x