Will NAT 0 allow a specific inside address make an outbound connection with no other configuration or do you have to combine its use with a nat (inside) 1 / global (outside) 1 pair?
NAT 0 10.2.2.10 for example.
With "nat 0" the inside host will be able to make an outside connection with no other configuration. Keep in mind that the host address will be untranslated though, so be careful with using it on private IP addresses.
it depends on the access-list that you configure to bind on the NAT 0. you can either allow a host or a subnet with NAT 0.. you can also specify a specific destination and port if you want.. example:
nat (inside) 0 access-list nonat
access-list nonat permit ip 192.168.100.0 255.255.255.0 10.1.1.0 255.255.255.0
access-list nonat permit ip host 192.168.200.0 host 10.2.2.1
any traffic from 192.168.100.0/24 to 10.1.1.0/24 will not be natted in the above case..
hope this helps.. all the best..